BrainMap

Bogdan Eugen Cojocaru

Dr.

Lecturer - UNIVERSITATEA BUCURESTI

Researcher | Teaching staff

Web of Science ResearcherID: A-8250-2012

Curriculum Vitae (21/10/2024)

Expertise & keywords

MXenes-type catalysts for energy production and fine-chemical syntheses (MXeneCAT) Call name: P 4 - Proiecte de Cercetare Exploratorie, 2020
PN-III-P4-ID-PCE-2020-1532 2021 - 2023

Role in this project:

Coordinating institution: UNIVERSITATEA BUCURESTI

Project partners: UNIVERSITATEA BUCURESTI (RO)

Affiliation:

Project website: https://www.chimie.unibuc.ro/cercetare/cataliza/PN-III-P4-ID-PCE-2020-1532/

Abstract:

2D atomic materials like graphenes elicited a considerable interest in the last decades due to the unique structural and electronic properties, their synthesis from available resources and the very high resistance in various environments. As a consequence their utilization found multiple applications, including catalysis. Integrated in this context, MXenes are a new class of 2D family including transition metal carbides, nitrides, and carbonitrides in which two, three, or four atomic layers of a transition metal (M: Ti, Nb, V, Cr, Mo, Ta, etc.) are interleaved with layers of C and/or N or B. To-date the investigation of MXenes in catalysis is still in an infancy state. Taking this state of the art, the project targets the synthesis of new MXenes through the incarceration, surface modification and plasma treatment, more adapted for catalytic applications. Their design focuses the production of fuels from waste CO2, improvement of the refinery production and synthesis of fine chemicals. Complex catalysts will be produced from sustainable resources (like chitosan or alginate) and elements of the groups 3, 4, 13 and 14 (Ti, Al, Sn, Zr, Ga) of the periodic table. Accordingly, the project will be integrated in several mandatory concepts such as environmental protection, energy reduction and circular economy. With the same aim, the synthesis of fine chemicals will be transferred to flow reactors.

Photocatalytic decontamination of pharmaceutic wastewaters using hybrid organic-inorganic magnetic supramolecular catalysts. Call name: P 4 - Proiecte de Cercetare Exploratorie, 2020
PN-III-P4-ID-PCE-2020-2207 2021 - 2023

Role in this project: Project coordinator

Coordinating institution: UNIVERSITATEA BUCURESTI

Project partners: UNIVERSITATEA BUCURESTI (RO)

Affiliation:

Project website: https://chimie.unibuc.ro/cercetare/cataliza/PN-III-P4-ID-PCE-2020-2207/

Abstract:

Along with the pharmaceuticals demand the related waste is more and more a problem. Both the low and high concentrations of the pharmaceutical pollutants are hazardous to the environment. The removal of these contaminants from waste waters requires efficient technologies. The aim of this project is the development of a laboratory validated method for visible light-driven photcatalytically decontamination of waters containing traces of β-lactam antibiotics using hybrid organic-inorganic magnetic supramolecular catalyst or a series of this kind of catalysts. The organic part of the hybrid will be represented by a metallic phthalocyanine, containing sulfonated groups, while the inorganic component of the hybrid system will be a LDH deposited on a magnetic substrate. In addition to the photocatalytic centre, the hybrid materials will have basic sites that could co-operate with the photocatalytic reaction to yield the complete degradation of the organic compound, the magnetic substrate permitting easy recovery of the catalysts from the reaction environment. One of the innovative approaches will use the capacity of materials to firstly adsorb the noxious compounds. This project will bring new knowledge in the environmental chemistry by identifying efficient systems for environment remediation. The technology proposed to be investigated by the present project will use sun light as energy source.

Deep eutectic solvent-based biocatalysis for the production of menthol natural derivatives as flavours/fragrances with applicability in food industry Call name: P 2 - SP 2.1 - Proiect experimental - demonstrativ
PN-III-P2-2.1-PED-2019-4561 2020 - 2022

Role in this project:

Coordinating institution: UNIVERSITATEA BUCURESTI

Project partners: UNIVERSITATEA BUCURESTI (RO); INSTITUTUL DE CHIMIE ORGANICĂ ŞI SUPRAMOLECULARĂ "COSTIN D.NENIŢESCU" (RO); NATURAL INGREDIENTS R & D S.R.L. (RO)

Affiliation:

Project website: https://www.chimie.unibuc.ro/cercetare/cataliza/PN-III-P2-2_1-PED-2019-4561/

Abstract:

BIOMENTH project proposes the development, optimization and validation of a viable strategy-based biocatalytic method for providing (-)-menthol derivatives with improved flavour properties interesting for food industry. Therefore, BIOMENTH proposes the enzymatic conversion of menthol into (-)-menthol esters of fatty acids (MEFA). Why MEFA(s) are important for food industry? MEFA(s) compared with (-)-menthol pattern combine the flavor of (-)-menthol and the good health properties of fatty acids (especially unsaturated structures – omega 3/6/9 fatty acids). Additionally, MEFA is characterized by controllable fragrance activity releasing the flavor in time as the ester bond is hydrolyzed, and accelerated activity as enhancer allowing an easy permeation through the cell membrane and better digestion implicitly.

In this context, the main goal of BIOMENTH is the development of the deep eutectic solvent (DES)-based biocatalytic method for (-)-menthol acylation with methyl fatty acids (FAME) using immobilized lipase enzyme as biocatalyst (covalent/CLEA/CLEMPA models). The mixture of menthol and FAME in a certain molar ratio will be the DES solvent phase of the proposed biocatalytic process. Its action will start by adding a lipase in DES phase. Optimization and validation of the developed method are also the targets of the BIOMENTH project.

Previously, similar biocatalysis, but in organic solvent (THF), has been done in the laboratory of one of the Consortium partners, which is the starting point of the project (TRL2). Based on the proposed activity, BIOMENTH will go further to TRL4 developing, optimizing and validating the proposed DES-based biocatalytic method.

Consortium of BIOMENTH project consists of three partners combining university (University of Bucharest (UB)-coordinator) with academic institute (Centrum of Organic Chemistry of Romanian Academy “C. Nenitescu” (CCO) - partner P1) and industry (Natural Ingredients (NIRD) company -partner P2).

Functionalized hierachical structures on graphene exhibiting magnetic, adsorption and catalytic properties Call name: P 4 - Proiecte Complexe de Cercetare de Frontieră
PN-III-P4-ID-PCCF-2016-0088 2018 - 2022

Role in this project:

Coordinating institution: UNIVERSITATEA BUCURESTI

Project partners: UNIVERSITATEA BUCURESTI (RO); UNIVERSITATEA BABES BOLYAI (RO); UNIVERSITATEA BABES BOLYAI (RO); UNIVERSITATEA BUCURESTI (RO)

Affiliation: UNIVERSITATEA BUCURESTI (RO)

Project website: https://www.chimie.unibuc.ro/cercetare/anorganica/PN-III-P4-ID-PCCF-2016-0088/PCCF_M%20Andruh_2022.pdf

Abstract:

The present research proposal aims to develop a series of directions which are less or non-explored to date in the chemistry of graphene. Its objectives rely on the experience of the four participants in organic synthesis, organometallic chemistry, molecular magnetism and catalysis. The project will stimulate not only the enhancement of the value of previously synthesized compounds by the partners, but also the development of an original chemistry. The hierarchical organization of organometallic – classical transition metal complexes on graphene surface is a step forward in materials science. The design of 3-D frameworks incorporating graphene is original and opens interesting perspectives for applications. The grafting of magnetic and luminescent complexes on graphene could bring an important added value in molecular magnetism. The catalytic processes to be investigated are carefully selected, in order to address important problems in organic synthesis, environmental protection and energy. The project will focus on the following major objectives: (i) design of networks by covalent connections between the decorated graphene sheets; (ii) design of graphene-based hybrid materials with appropriate organometallic/metalloid units as ligands for transition metals; (iii) single molecule magnets and luminescent molecules grafted on graphene; (iv) functionalization of graphene with macrocycles, cryptands and rotaxanes for organocatalytic reactions; (v) development of multifunctional catalysts for controlled cascade reactions; (v) applications in catalysis (the valorization of the CO2 emissions; the hydrogenation of nitro-alkenes and mixtures of acetylene-ethylene; C-C and C-N coupling reactions) and gas sorption. A special attention in these studies will be addressed to the investigation of the catalytic mechanisms.

SOL-2020-2 5. The development of innovative decontamination solutions against SARS-CoV-2 virus (surfaces, equipments, close and open spaces) Call name: P 2 - SP 2.1 - Soluţii - 2020 - 2
PN-III-P2-2.1-SOL-2020-2-0399 2020 - 2020

Role in this project:

Coordinating institution: Ministerul Apararii Nationale prin Centrul de Cercetare Stiintifica pentru Aparare CBRN si Ecologie

Project partners: Ministerul Apararii Nationale prin Centrul de Cercetare Stiintifica pentru Aparare CBRN si Ecologie (RO); UNIVERSITATEA POLITEHNICA DIN BUCURESTI (RO); UNITATEA MILITARA 02433 BUCURESTI (RO); UNIVERSITATEA BUCURESTI (RO); SPITALUL UNIVERSITAR DE URGENTA BUCURESTI (RO); STIMPEX S.A. (RO)

Affiliation:

Project website: https://www.nbce.ro/?page_id=895

Abstract:

The project's scope consist in the development of an innovative decontamination solution, with antimicrobial and antiviruses effects, using a mixture of quaternary ammonium salts and gold or silver nanoparticles as active compounds, and also the development of a complex system for solution dispersion.

In depth study of the structure – photocatalytic activity relationship of lanthanide metal doped titania photocatalysts Call name: P 1 - SP 1.1 - Proiecte de cercetare pentru stimularea tinerelor echipe independente
PN-III-P1-1.1-TE-2016-0562 2018 - 2020

Role in this project: Project coordinator

Coordinating institution: UNIVERSITATEA BUCURESTI

Project partners: UNIVERSITATEA BUCURESTI (RO)

Affiliation: UNIVERSITATEA BUCURESTI (RO)

Project website: https://www.chimie.unibuc.ro/cercetare/cataliza/PHOTOLANTI/

Abstract:

Doping of TiO2 with rare earth metals emerged as a very efficient method to improve the photocatalytic performances. In addition, the upconversion effect representing the combination of multiple low energy photons to one high energy photon has been assumed to increase the number of UV/Vis photons required for a desired photochemical transformation. However, in this stage there is a series of questions at which the answers are missing or not clear: i) it is not clear where the catalytic behavior is attributed to the defects of titania or of the lanthanide guest dopant, ii) there is not a systematic control of doping of titania by lanthanide species in order to answer to this question, iii) it is not clear where the photocataltic activity is related or not to the upconversion, iv) there is no coherent literature information about the „solubility” of lanthanides in the titania matrix. To answer these questions a correlation of a rigorous control of the preparation of these materials providing well homogeneous substituted Ln species and lanthanide oxide domains with characterization and catalytic evaluation in a representative reaction is necessary. The project will focus the efforts with the aim to find answers to these questions by: 1. Synthesis of well homogeneous and egg-shell distributed Ln-TiO2 substituted Ti4+ photocatalysts; 2. Discrimination of the effect of the Ln location (as either substitutional dopant or segregated phase) and of the type of the metal species where the defects responsible for the photocatalytic activity are associated, using various in-situ and ex-situ techniques; 3. Photoluminescence exhaustive investigations in order to elucidate to what extent the upconversion contributes to the enhancement of the photocatalytic performances; 4. Correlation of the results of these measurements with the photocatalytic results in the selective aerobic oxidative condensation of benzylamine under both batch and continuous flow experiments.

Doped oxide nanoparticles: From local structure to long – range perspective via luminescence Call name: P 4 - Proiecte de Cercetare Exploratorie
PN-III-P4-ID-PCE-2016-0305 2017 - 2019

Role in this project: Key expert

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU FIZICA LASERILOR, PLASMEI SI RADIATIEI - INFLPR RA

Project partners: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU FIZICA LASERILOR, PLASMEI SI RADIATIEI - INFLPR RA (RO)

Affiliation: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU FIZICA LASERILOR, PLASMEI SI RADIATIEI - INFLPR RA (RO)

Project website: http://nanolumin.inflpr.ro/PCE2017.html

Abstract:

In the recent years, lanthanide doped wide band gap semiconductor and oxide nanoparticles have become one of the fastest growing areas of scientific research. There are two main challenges when doping nanoscale materials with Ln ions. The first is host specific and concerns the huge surface/volume ratio. The second main challenges concern the “marriage” between the host and the lanthanide dopants. In the case of aliovalent doping, the misfit in the valence but also the ionic radii of the bulkier dopants and host cations can lead to reduced complex distribution of lanthanide as isolated substitutional /interstitial centres or associates with defects or/and reduce solubility. So, the first question to be answered when studying lanthanide doped nanoparticles is the following: How do we know if the nanoparticles have been successfully doped? Since the dopants class is represented by optically active dopants, a “natural” selection of a local structure oriented technique would be the luminescence spectroscopy based on use of the lanthanide as luminescence probe.

The project aims at clarifying the local structure around lanthanide dopants in three outstanding wide bandgap oxides SnO2, TiO2 and HfO2. Our luminescence approach based on the simultaneous analysis of the site selective and time-gated luminescence allows an exceptional insight into the photophysics of doped nanoparticles. As lanthanide dopants with local probe properties, we select the Eu, Sm, Tb, Dy and Er ions with relevant emission in the visible and near – infrared, respectively. The project will address also the current limitations existing in the literature and which regard, essentially, the correlation between the local structure and long - range properties. To this aim, we will correlate the in situ luminescence with in situ X – ray diffraction and in situ Raman data to get in depth insight into the order/disorder, doping and surface effects during amorphous/crystalline to crystalline phase transition.

Graphenes as eco-heterogeneous catalysts for the eco-production of C4-dicarboxylic acids Call name: P 4 - Proiecte de Cercetare Exploratorie
PN-III-P4-ID-PCE-2016-0146 2017 - 2019

Role in this project:

Coordinating institution: UNIVERSITATEA BUCURESTI

Project partners: UNIVERSITATEA BUCURESTI (RO)

Affiliation: UNIVERSITATEA BUCURESTI (RO)

Project website: https://chimie.unibuc.ro/cercetare/cataliza/PN-III-P4-ID-PCE-2016-0146/

Abstract:

The GrafEco project challenges two very ambitious objectives: i) synthesis and investigation of Graphenes as eco-heterogeneous catalysts, and ii) the eco-production of C4-dicarboxylic acids. It envisages the production of graphene-based supports and catalysts for the selective direct production of three C4 di-acids ie fumaric, malic and itaconic acid derivatives from cellulose/glucose. Acids with additional keto- or hydroxyl-groups (like malic acid) are desirable building blocks for polyesters, while di-carboxylic acids (like fumaric acid) are used for the production of polyamides with advanced material properties. Fumaric acid is also used as a raw material for pharmaceutics. Itaconic acid is another C4 unsaturated dicarboxylic acid with a high potential as a platform for chemicals derived from sugars. As specific segments, the synthetic strategy of these acids will consider the in-situ transformation of the tartaric acid produced from cellulose/glucose: i) to fumaric acid via the didehydroxylation of vicinal diols; ii) the Wacker oxidation of fumaric double bond to a ketone followed by the in-situ enzymatic reduction of the C=O double bond to the asymmetric malic acid, and iii) the Sonogashira reaction of fumaric acid with acetylene and acetylene derivatives. For such a purposes Re, Cu, and Pd are envisaged as active species. The engineering of producing oriented nano-alloys will be as well investigated in these syntheses. Functionalization of graphenes with basic active components able to facilitate desorption of the carboxylic acids, the catalysts recycling and the transfer of the production of the targeted molecules from batch reactions to flow reactor conditions constitute additional challenging objectives. The present proposal is well fitting the Romanian National Plan for research, development and innovation for the period of 2015-2020.

MIP-SLM technology for alkyl pyrazines production as natural flavours requested by agro-food industry Call name: P 2 - SP 2.1 - Proiect experimental - demonstrativ
PN-III-P2-2.1-PED-2016-1327 2017 - 2018

Role in this project:

Coordinating institution: UNIVERSITATEA BUCURESTI

Project partners: UNIVERSITATEA BUCURESTI (RO); CENTRUL DE CHIMIE ORGANICA AL ACADEMIEI ROMANE "C.D.NENITESCU" (RO)

Affiliation: UNIVERSITATEA BUCURESTI (RO)

Project website: http://www.chimie.unibuc.ro/cercetare/cataliza/PN-III-P2-2_1-PED-2016-1327/index.html

Abstract:

BIO-FLAVOR proposes new technology for the production of alkyl pyrazines (mixture) as natural flavors in agro-food industry. Usually, natural pyrazines are generated using biomass fermentation followed by pyrazine purification based on distillation process. The general drawback is caused by the low efficiency of the distillation stage (e.g. mainly distillation of the fusel oil with lowers than 1 % pyrazines content). Thus, the industry requests a technology for efficient recovery and concentration of pyrazines mixture from fusel oil.

BIO-FLAVOR offers a solution proposing the extraction and enrichment of alkyl pyrazines from fusel oil involving the concept of supported liquid membrane (SLM) extraction improved by the presence of molecular imprinted polymer (MIP). Consequently, the entire technology is generally named MIP-SLM.

The MIP-SLM system has a sandwich design with two different channels (donor and acceptor) and a supported liquid membrane (SLM) placed between them. Pyrazines will diffuse from the donor - into the SLM, based on analyte partitioning between the aqueous donor and the organic phase. Then, the pyrazine will be re-extracted from the organic membrane into the MIP-containing stagnant acceptor phase and accumulated in the form of MIP-pyrazine complex.

MIP-SLM extraction technique will be developed and characterized in term of extraction efficiency/ enrichment factor and system versatility for alkyl pyrazines related to the usual separation approaches (i.e. distillation). Also, biomass source for pyrazine production and bio-technological conditions related to fusel oil will be correlated to the pyrazine structures and aroma properties.

Thus, BIO-FLAVOR offers the opportunity to develop an efficient technology (MIP-SLM) for production of natural pyrazine starting from existing concept (SLM extraction)tested previously for different analytes (e.g. pesticides and hormones). Additionally, BIO-FLAVOR is a bridge connecting the academic and industry areas.

Wastewaters treatment through flocculation- oxidation processes mediated by red mud derived flocculants and catalysts Call name: Joint Applied Research Projects - PCCA 2013 - call
PN-II-PT-PCCA-2013-4-0177 2014 - 2017

Role in this project:

Coordinating institution: UNIVERSITATEA BUCURESTI

Project partners: UNIVERSITATEA BUCURESTI (RO); Institutul National de Cercetare-Dezvoltare pentru Chimie si Petrochimie - ICECHIM Bucuresti (RO); INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU METALE NEFEROASE SI RARE - IMNR (RO); INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU FIZICA LASERILOR, PLASMEI SI RADIATIEI - INFLPR RA (RO); EDAS-EXIM SRL (RO)

Affiliation: UNIVERSITATEA BUCURESTI (RO)

Project website: http://www.unibuc.ro/depts/chimie/chimie_organica_biochimie_si_cataliza/PROIECTE-DE-CERCETARE/pn-ii-pt-pccaPN-II-PT-PCCA-2013-4-0177-2013-4-01770/

Abstract:

The project aims the development of an innovative technology for the treatment of wastewaters with high organic loading which may occur from different sources such as: food processing, stock farming, tanneries, oil pumping stations, engine cleaning stations.

The ground principle for the new technology is fighting pollution by valorizing the useful components from pollutants, or briefly ”Pollutants fighting pollution”. In this way the benefic impact on the environment is practically doubled. On one hand the volume of industrial wastes polluting the soil and waters is diminished, and on the other hand after the treatment clean water is obtained while decreasing the consumption of chemical grade reagents utilized in water treatment, as well as the costs related to the consumption of energy, raw and auxiliary materials needed for their manufacture avoiding also the emissions of other pollutants.

The industrial waste which is going to be valorized for this purpose is the red mud which is yielded in huge quantities from alumina manufacturing by Bayer process. Red mud is a highly alkaline residue (pH >11,5) with high concentration of iron oxides (40-50%) along with other oxides such as Al2O3, SiO2, TiO2, Na2O, CaO. It has elevated sodium concentration (>30 g/kg), and soluble alkalinity (≈30 g/kg as equivalent CaCO3). Due to its alkalinity and high content of fine-grained particles (>90% have sizes
Taking into account the high concentration of iron oxides in red mud waste, this project aims the utilization of red mud as iron source in order to replace partially the chemical reagents (generally synthesis grade Fe(III) salts) used in the obtaining of coagulation-flocculation-oxidation agents and advanced oxidation catalysts used in wastewaters treatment, laying the grounds for a sustainable green technology for the treatment of high organic loaded wastewaters.

The following original aspects that were not investigated up to now will be addressed:

a) the utilization of red mud suspensions for the generation of ferrate anions (FeO42-) which are the most powerful oxidation agents that may be used in water treatment (as it may be seen from the variation of the redox potentials: FeO42- (2,2eV) > O3 (2,03 eV) >H2O2 (1,78 eV) > MnO42- (1,68 eV) > Cl2 (1,36 eV) > O2 (solved) (1,23 eV) > ClO2 (0,95 eV)). The ferrate anions are considered to be a „green oxidant” since after the ferrate (VI) treatment there are no toxic by-products and following the redox cycle Fe(VI) is reduced to Fe(III) which is a very good coagulant/flocculant. Subsequently, in the stage following the oxidation it may serve as coagulant/flocculant able to remove the non-degradable impurities.

b) the obtaining of red-mud derived ceramic foams by gel-casting method - water treatment advanced oxidation catalysts

c) the obtaining of nanostructured amphiphilic magnetic materials - carbon nanofibers/red mud ceramic foams by chemical vapor deposition (CVD) method – efficient adsorbents of hazardous organic contaminants in wastewaters.

d) integration of the above mentioned obtained materials in the technology for the treatment of wastewaters with high organic loading.

The project enables the partnership between public and private areas in the priority domain 3- Environment. The partnership includes 5 participants: an university, 3 national research-development institutes, a private company EDAX EXIM SRL provider of equipments and specific tasks in the domain of wastewaters and water treatments which co-finances the project. The participation of the co-financer has the role to create the mechanisms for implementing the technologies developed by this project.

Extensive valorization of lignin and salicylic acid to bulk and fine chemicals Call name: Joint Applied Research Projects - PCCA-2011 call, Type 2
PN-II-PT-PCCA-2011-3.2-0731 2012 - 2016

Role in this project:

Coordinating institution: UNIVERSITATEA BUCURESTI

Project partners: UNIVERSITATEA BUCURESTI (RO); Institutul National de Cercetare-Dezvoltare pentru Chimie si Petrochimie - ICECHIM Bucuresti (RO); CENTRUL DE CHIMIE ORGANICA AL ACADEMIEI ROMANE "C.D.NENITESCU" (RO); BIOMASS ENERGY FARMING SRL (RO); POLL CHIMIC S.A. (RO)

Affiliation: UNIVERSITATEA BUCURESTI (RO)

Project website: http://www.unibuc.ro/depts/chimie/chimie_organica_biochimie_si_cataliza/PROIECTE-DE-CERCETARE/Proiect-151-din-2012/

Abstract:

Lignin represents one of the major sources of carbon, hydrogen and functional groups provided by the nature. However, due to its polymeric structure, it is not enough valorized for the moment, although except the desert areas, it is abundant in the world. One of the reasons of the un-sufficient valorization is the high content of oxygen in very diverse functionalities. The present proposal constitutes a multi-facet project based on several novelties. The first one refers to the nature of the chemical compounds are intended to be produced using lignin as starting material. The second novelty refers to the nature of the catalysts. They will exhibit two functionalities: one acidic to disrupt oxygen bonds and to catalyze acylation and alkylation reactions, and second, to hydrogenate the disrupted fragments. The new catalysts will be prepared as micrometer materials containing active supported nano-structured species to allow an easy penetration inside the polymers. They will present a high density of defects, directly connected to the population of the active centres. The chemical composition of the catalyst represents another novelty, since it should be cheap and recoverable. The fourth novelty refers to the combination of valorization of lignin with salicylic acid. This is also abundant in bushes/leafs and till now does not found an efficient extraction and use in Romania. Another expected novelty is the establishment of analytic methodologies. The methods proposed till now in the literature are rather contradictory. Based on these statements the main objective of the project is Extensive valorization of lignin and salicylic acid to bulk and fine chemicals. Several sub-objectives are derived from this general objective: cultivation of different species of energetic willows, an efficient extraction of Lignin and Salicylic acid, new catalytic technologies to valorize the raw materials to surfactants and lignans, project implementation into pilot plant, dissemination.

INTEGRATED SYSTEM FOR PRODUCING SYNTHETIC AVIATION FUEL FROM ALGAL BIOMASS Call name: Joint Applied Research Projects - PCCA-2011 call, Type 2
PN-II-PT-PCCA-2011-3.2-0083 2012 - 2016

Role in this project:

Coordinating institution: Institutul National de Cercetare-Dezvoltare pentru Chimie si Petrochimie - ICECHIM Bucuresti

Project partners: Institutul National de Cercetare-Dezvoltare pentru Chimie si Petrochimie - ICECHIM Bucuresti (RO); INSTITUTUL DE CERCETARI PRODUSE AUXILIARE ORGANICE S.A. (RO); UNIVERSITATEA BUCURESTI (RO)

Affiliation: UNIVERSITATEA BUCURESTI (RO)

Project website: http://algalsaf.icechim.ro/

Abstract:

INTEGRATED SYSTEM FOR PRODUCING

SYNTHETIC AVIATION FUEL FROM ALGAL BIOMASS (ALGAL-SAF)

SUMMARY

ALGAL-SAF project focuses on the potential use of algae, as raw material for producing alternative fuels for aviation that could replace the petrochemical jet fuel up to 50% by volume without any durability problems, by an integrated technologies system starting from algae.

The overall objectives of the project aim to complete valorisation of algal biomass, using an integrated system wherein bio-feedstock is subjected to oil extraction to produce algal oil and then dehydrating of de-oiled algal biomass comprising carbohydrates, in the presence of catalysts to yield furan derivatives. Further, we propose, simultaneously catalytic processing technologies of fatty acid methyl esters and furan derivatives mixture by upgrading them into alcohol derivatives, and finally catalytic reforming processes for producing a mixture comprising iso/n alkanes, suitable for, or as a blending component for, uses such as an aviation fuel, being competitive and compatible, to current used fuels.No attempts were found in the literature about such an integrated system developed for synthetic aviation fuel production, as we have proposed in this project. We have found some knowledge gaps in the current state-of-art, as follows: (a) Selecting the microalgae able to grow in mixotrophic conditions for high yield algal oil production; (b) Mixotrophic microalgae culture, by supplementing culture media with crude glycerin, as carbon source and protein hydrolysate, as nitrogen source (c) Valorization of de-oiled algal biomass via furan derivatives, as precursors for aviation fuels; (d) Simultaneously catalytic processing technologies of fatty acid methyl esters and furan derivatives mixture by upgrading them into alcohol derivatives; (e) Simultaneously dehydration, hydrocracking and isomerization processes of alcohol derivatives, for producing iso/n alkanes, suitable as synthetic aviation fuel.

The project will contribute to environmental compliance of Directive 2009/28/EC, on the promotion of the use of energy from renewable sources, which aims at achieving by 2020 a 20% share of energy from renewable sources in the EU's final consumption of energy and a 10% share in each member state's transport energy consumption.

DESIGN OF ORGANIC SPACERS FOR CONSTRUCTING METAL-ORGANIC FRAMEWORKS (MOFs) – TOWARDS A BETTER CONTROL OF THE POROUS ARCHITECTURE AND ACTIVE CATALYTIC SITES Call name: Complex Exploratory Research Projects - PCCE-2011 call
PN-II-ID-PCCE-2011-2-0050 2012 - 2016

Role in this project:

Coordinating institution: University of Bucharest

Project partners: University of Bucharest (RO); University of Bucharest (RO); Babes Bolyai University (RO); Babes Bolyai University (RO)

Affiliation: University of Bucharest (RO)

Project website: http://www.chimie.unibuc.ro/cercetare/anorganica/PCCE_M%20Andruh.pdf

Abstract:

The project aims to obtain a new generation of metal-organic frameworks (MOFs) using novel families of made-by-design spacers (Cyclophane and cyclophane-like spacers with pre-formed cavities; C3-symmetry cryptand-based ligands; Tetrahedral synthons; Organometallic spacers featuring robust metal-carbon bonds, e. g. Organometallic halides, with appropriate organic groups attached to the metal centre to provide stability of the organometallic unit and/or potential to develop 3D architectures. The efforts will be concentrated towards compounds with the metal in lower oxidation state bearing a lone pair of electrons and thus higher reactivity). The construction of MOFs using organometallic tectons is a field largely unexplored. A special emphasis will be given to the post-synthesis processing of the MOFs (removal of solvent and weakly coordinated ligands; functionalization of selected MOFs by nanoconfinement with metal nanoparticles and functionalization for generation of acidic and basic sites). The sorption of various gases (H2, CO2, C2H2, etc.) as well the catalytic properties of the newly synthesized MOFs will be investigated. Enantioselective organic reactions catalyzed by chiral MOFs will be studied as well. In this scope MOFs functionalized with acid and base functions will be investigated in the asymmetric aldol reaction between representative ketones with various aromatic aldehydes under solvent-free conditions. The luminescence properties of some MOFs as well as the influence of the host molecules on the luminescence (especially for those containing lanthanide cations) will be investigated. The ability of the new MOFs for decontamination processes will be tested - more specifically, MOFs will be used as adsorbents for the molecules resulted from the degradation of pharmaceutical compounds via either liquid phase catalytic oxidation or plasma.

Temporally and spectrally resolved luminescence of lanthanide’s doped tetravalent nano-oxides: A unitary approach Call name: Exploratory Research Projects - PCE-2011 call
PN-II-ID-PCE-2011-3-0534 2011 - 2016

Role in this project: Key expert

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU FIZICA LASERILOR PLASMEI SI RADIATIEI

Project partners: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU FIZICA LASERILOR PLASMEI SI RADIATIEI (RO)

Affiliation:

Project website: http://nanolumin.inflpr.ro/idei.html

Abstract:

Our proposal is focused on particular class of luminescent nano-oxides, namely lanthanide’s (Ln3+) doped tetravalent CeO2, (I) ZrO2 (II) and CexZr1-xO2 (III) which attract tremendous attention as advanced ceramics, catalysts, sensors and luminescent materials. These applications rely on their unique, but very poorly understood, structures and physical properties.

The broad aim is to identify, describe and provide novel insights on the structure-luminescence relationships occurring in the lanthanide’s (Ln3+) doped I - III. Our original approach is based on the unitary investigation of their luminescence and structural properties. The key features of the nanocrystals are their high-surface, narrow and ultra- small size distribution. The lanthanide’s dopants will exhibit visible emission via direct pumping and up-conversion. This research involves the application of powerful set of complimentary techniques and methods such as high resolution transmission and scanning electron microscopies, in-situ RAMAN and X-ray diffraction, X-ray photoelectron spectroscopy and luminescence spectroscopy. At the heart of the investigation are the temporally and spectrally resolved luminescence studies. We believe that our proposal will deepen the fundamental knowledge on the Ln3+- I -III host interactions at the nanoscale with strong impact on the luminescence and structure-derived applications.

Heterogeneous Catalytic Synthesis of Amine derivatives via Hydroamination and N-C coupling reactions Call name: Exploratory Research Projects - PCE-2011 call
PN-II-ID-PCE-2011-3-0060 2011 - 2016

Role in this project:

Coordinating institution: UNIVERSITATEA DIN BUCURESTI

Project partners: UNIVERSITATEA DIN BUCURESTI (RO)

Affiliation: UNIVERSITATEA DIN BUCURESTI (RO)

Project website: http://www.unibuc.ro/depts/chimie/chimie_organica_biochimie_si_cataliza/PROIECTE-DE-CERCETARE/Proiect-275-din-2011/

Abstract:

Synthesis of amines and amine derivatives represents part of contemporary organic synthesis since the properties of these molecules found increasing applicability in the production of pharmaceuticals, agrochemicals, or building blocks for organic materials. Despite their importance practice is still encountering problems in finding adequate methods for the synthesis of functionalized amines, especially containing aromatic derivatives. Most of the reported methods use either harsh non green reaction conditions or suffer from a limited substrate scope. The present project will investigate two methodologies to synthesize such molecules: Buchwald- Hartwig reaction and hydroamination. Although both demonstrate to be important routes they present some drawbacks that are necessary to be overcome to become also efficient. Buchwald-Hartwig reaction is typically catalyzed by homogeneous palladium complexes with specific ligands and under strong basic conditions, while hydroamination is carried out on not very well defined catalysts. To solve these problems the project will investigate heterogeneous catalysts. For Buchwald-Hartwig reaction it will consider supported nanostructures of the 11th group elements under non-basic conditions and non-conventional activation (microwave), while for hydroamination pure Lewis acid and pure Bronsted acid catalysts. To be more efficient, the productivity will be increased by making these reactions under flow conditions in specific microreactors.

GREEN FUELS - OBTAINING HIDROGEN FROM BIODIESEL WASTE USING NEW CATALYSTS AND NONCONVENTIONAL CATALYTIC PROCESSES Call name:
2010 - 2012

Role in this project: Project coordinator

Coordinating institution: UNIVERSITATEA BUCURESTI

Project partners: UNIVERSITATEA BUCURESTI (RO)

Affiliation: UNIVERSITATEA BUCURESTI (RO)

Project website:

Abstract:

Hydrogen represents an ideal a clean energy source. The energy liberated in the hydrogen combustion and the nonpolluting reaction product, water, have increased the interest fort this fuel. However, the hydrogen is not accessible in nature and the present production requires equivalent energies to those produced by its combustion. In these conditions, identifying new sources and methodologies is extremely important in these days. Renewable sources like biomass or waste waters are de main candidates. In this context, glycerol, which is a secondary product of biodiesel production, represents an important hydrogen source. This kind of valorization requires financial costs for catalysts preparation which generally contain supported noble metals and also energetic for reactions which require heating and high pressures. Present project proposes the identification of new hydrogen sources (natural and renewable) and experimental methodologies using new, more efficient catalytic systems.

Catalysts based on photosensitizers grafted on zeolites for photo-oxidation reactions Call name:
2007 - 2009

Role in this project: Project coordinator

Coordinating institution: UNIVERSITATEA BUCURESTI

Project partners: UNIVERSITATEA BUCURESTI (RO)

Affiliation: UNIVERSITATEA BUCURESTI (RO)

Project website:

Abstract:

FILE DESCRIPTION	DOCUMENT
List of research grants as project coordinator or partner team leader
Significant R&D projects for enterprises, as project manager
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Peer-review activity for international programs/projects