ABSTRACT
É. Síposa, G. Fogassya, P.V. Samantb , J.L. Figueiredob, and A. Tunglera
aDepartment of Chemical Technology, Technical University of Budapest, H-1521 bLaboratório de Catálise e Materiais, Chemical Engineering Department,
Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal
Abstract
Highly mesoporous carbon supported Pd catalysts were prepared using sodium formate and hydrogen for the reduction of the catalyst precursors. These catalysts were tested in the enantioselective hydrogenation of isophorone and of 2benzylidene-1-benzosuberone. The support and the catalysts were characterized by different methods such as nitrogen adsorption, hydrogen chemisorption, SEM, XPS and TPD. Introduction The type of catalyst strongly influences the enantioselectivity of heterogeneous catalytic hydrogenations (1). In the enantioselective saturation of the C=C bond of isophorone over (-)-dihydroapovincaminic acid ethyl ester ((-)-DHVIN) modified Pd catalysts (scheme 1) the optical purity strongly depended on the type and properties of the support used (2, 3, 4).
