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ETHERIFICATION AND ESTERIFICATION OF POLYOLS OVER SOLID CATALYSTS. EXAMPLE OF GLYCEROL-USES FOR DETERGENTS |
| Host Laboratory | Scientific Supervisor | |
| Centre National de la Recherche Scientifique URA 0350 - Laboratoire de Catalyse en Chimie Organique Avenue du Recteur Pineau 40 CNRS.APC DR15 86022 Poitiers France |
Dr. Joel Barrault Tel : +33/49453717 / Fax : +33/49454444 | |
| Grant Holder | ||
| Mr. Jean-Marc Clacens (Belgian) Tel : 32/81450192 / Fax : 32/81724530 Email : jean-marc.clacens@fundp.ac.be | ||
| Abstract The use of natural and renewable feedstocks (i.e. from Agriculture) for the preparation of specific compounds (issued to day from petrochemistry) or of new and valuable products (fine chemicals) is a very important trend for the future in the non-food field. our laboratory is involved in the valorization of natural oils and fats as well as polyols like glycerol and the present project deal with the selective transformation of glycerol to: a) di-, tri- or tetraglycerol ... (linear or cyclic) via a controlled polycondensation and b) esters of polyglycerols via a regioselective esterification with acids or esters. On account of relevant physical (viscosity, stability) or physicochemical (surface activity) properties these compounds find numerous applications in cosmetics, detergents, pharmaceutics food, lubricant ... industries. The first aim of this study is to find solid catalysts for the replacement of usual homogeneous and corrosive (acids, bases) catalysts. The second and the most important objective is to increase the selectivity of these reactions. From molecular simulation and size of target molecules, mesoporous solid phases will be synthesised. Moreover we propose to monitor the porosity in order to control the shape-selectivity and the polycondensation of glycerol or the esterification rate of polyglycerol. Researches will be done either for acid or base materials. Besides the scientific aspect, the technical benefits i. e. new molecules, high purity and more easily biodegradable products, more environmentally friendly processes ..., will be specifically examined by our private partner. This proposal is the result of new reactions detected in a current work supported by the AAIR Programme (PL 942218). Contract number : FAIRCT965045 | ||
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