National Graduate School of Chemistry, Rennes
Rennes, France
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Agency: European Commission | Branch: FP7 | Program: BSG-SME | Phase: SME-2012-1 | Award Amount: 1.50M | Year: 2012

CARVOC wants to solve the social, environmental and economic problem that represents the emission of VOC/TIC to the atmosphere through the development of innovative activated carbon filters (ACF) based on activated carbons (AC) produced from natural wastes, capable of adsorbing VOC/TIC emitted by highly pollutant industries or that may be released in industrial accidents or in terrorist attacks. The resulting ACF will be primarily integrated into industrial filtering systems and personal protection equipments but may be included in all products whose purpose is the VOC purification. One of the projects goals is to decrease global air pollution. The wastes to be used for R&D of AC are the hemp residues from farming and industrial processing. They are a particularly suitable and novel raw material since hemp represents a sustainable crop with beneficial environmental characteristics not offered by other plants and it has many advantages for the preparation of AC mainly, large amounts of hemp residues are generated and its high carbon content. Different methods for the activation of the residues will be used for preparing AC with a suitable porous texture for gas and vapor phase pollutant abatement. There will be selected the most frequent and harmful VOC for the environment and with the greatest toxicity for Humans and Ecosystems. Adsorption tests will be carried out with the selected VOC, to determine the adsorption capacity of the AC towards those compounds, both in mixture or separately and, to evaluate the performance of the materials obtained. In CARVOC the SMEs will benefit from the R&D conducted by the RTDs, because it will be obtained an ACF with improved structural and functional features to existing AC on the market since it will be produced from a new precursor, hemp fiber, and will be specifically activated for the purification of VOC. Moreover CARVOC will help to reduce the current 26% AC imports rate by producing a competitive AC made of hemp wastes.

Loyer P.,University of Rennes 1 | Cammas-Marion S.,National Graduate School of Chemistry, Rennes
Journal of Drug Targeting | Year: 2014

The field of specific drug delivery is an expanding research domain. Besides the use of liposomes formed from various lipids, natural and synthetic polymers have been developed to prepare more efficient drug delivery systems either under macromolecular prodrugs or under particulate nanovectors. To ameliorate the biocompatibility of such nanocarriers, degradable natural or synthetic polymers have attracted the interest of many researchers. In this context, poly(malic acid) (PMLA) extracted from microorganisms or synthesized from malic or aspartic acid was used to prepare water-soluble drug carriers or nanoparticles. Within this review, both the preparation and the applications of PMLA derivatives are described emphasizing the in vitro and in vivo assays. The results obtained by several groups highlight the interest of such polyesters in the field of drug delivery. © 2014 Informa UK Ltd.

French National Center for Scientific Research, French Institute of Petroleum and National Graduate School of Chemistry, Rennes | Date: 2014-04-25

This invention describes a process for metathesis of olefins from feedstocks obtained from the Fischer-Tropsch process, using as catalyst a ruthenium alkylidene complex comprising a saturated or unsaturated, dissymmetrical N-heterocyclic carbene (NHC) ligand.

Agency: European Commission | Branch: FP7 | Program: CP-FP | Phase: NMP-2007-3.4-2 | Award Amount: 5.41M | Year: 2008

Catalysis is a well-established area that is well known for shortening molecular assembly protocols. The beneficial overall environmental impact emerging from catalytic uses is also well understood. Making use of catalysis, we plan to develop a program focusing on a very important reaction in organic and homogeneous catalysis that has not yet reached its potential; Olefin Metathesis. The 2005 Nobel Prize was awarded to three pioneers in this area for their seminal contributions but the areas potential has not yet been achieved. The program involves the de novo design, testing, application and commercialization of novel olefin metathesis catalysts. The proposal makes use of unique European expertise in metathesis. The assembled team is composed of leaders in olefin metathesis from various areas: catalyst design, application specialists in polymer and small molecule synthesis, heterogeneization of homogeneous catalyst, computational experts and industrial catalyst production and sales to end users in the pharmaceutical and bulk chemical industries. This is a true conception to commercialization effort. Economic and social impacts are foreseen as major.

Eiffage Travaux Publics and National Graduate School of Chemistry, Rennes | Date: 2010-04-29

The invention relates to surfactant compositions made from esters or amides of the betaine glycine, produced by reaction of the glycine betaine with a sulphonic acid and an alcohol or a fatty-chain amine derived from vegetable oils. The invention further relates to a cosmetic comprising said surfactant composition, in particular, liquid soap, bath foam, shower gel or shampoo.

National Graduate School of Chemistry, Rennes and French National Center for Scientific Research | Date: 2013-04-19

A process for enzymatically converting a furanoside substrate in a product of interest, includes contacting the substrate with an enzyme in presence of an alcohol acceptor, wherein the enzyme is preferably Araf51, and wherein the product is preferably an alkyl furanoside. The mutant Araf51 enzyme showing improved transglycosylation activity in comparison with the native wild-type (wt) Araf51 enzyme, and a method for screening the mutants are also described.

National Graduate School of Chemistry, Rennes and French National Center for Scientific Research | Date: 2013-12-11

The invention relates to a ruthenium alkylidene complex comprising a 1-aryl-3-cycloalkyl-imidazolin-2-ylidene ligand, the cycloalkyl group of said 1-aryl-3-cycloalkyl-imidazolin-2-ylidene ligand being a cyclic secondary aliphatic alkyl.

Le Cloirec P.,National Graduate School of Chemistry, Rennes
Chinese Journal of Chemical Engineering | Year: 2012

A general research program, focusing on activated carbon fiber cloths (ACFC) and felt for environmental protection was performed. The objectives were multiple: (i) a better understanding of the adsorption mechanisms of these kinds of materials; (ii) the specification and optimization of new processes using these adsorbents; (iii) the modeling of the adsorption of organic pollutants using both the usual and original approaches; (iv) applications of ACFC in industrial processes. The general question was: how can activated carbon fiber cloths and felts be used in air treatment processes for the protection of environment. In order to provide an answer, different approaches were adopted. The materials (ACFC) were characterized in terms of macro structure and internal porosity. Specific studies were performed to get the air flow pattern through the fabrics. Head loss data were generated and modeled as a function of air velocity. The performances of ACF to remove volatile organic compounds (VOCs) were approached with the adsorption isotherms and breakthrough curves in various operating conditions. Regeneration by Joule effect shows a homogenous heating of adsorber modules with rolled or pleated layers. Examples of industrial developments were presented showing an interesting technology for the removal of VOCs, such as dichloromethane, benzene, isopropyl alcohol and toluene, alone or in a complex mixture. © 2012 Chemical Industry and Engineering Society of China (CIESC) and Chemical Industry Press (CIP).

Bellec A.,National Graduate School of Chemistry, Rennes | Guillemin J.-C.,National Graduate School of Chemistry, Rennes
Chemical Communications | Year: 2010

In the partial sublimation of three enantiomerically enriched amino acids, the ee of the sublimates can be explained by the ratio between the saturated vapor pressures of the racemate and the pure enantiomers. © The Royal Society of Chemistry 2010.

National Graduate School of Chemistry, Rennes | Date: 2011-07-11

The present invention relates to a process for preparing a terpenoid derivative, the process comprising a metathesis of an olefin and a terpenoid, and to terpenoid derivatives prepared with said process.

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