PREPARATION, PROPERTIES, AND CATALYTIC APPLICATION OF POLYMER-BOUND RU(III) COMPLEXES

Styrene-divinylbenzene copolymer with 2 and 5% crosslinking was chloro methylated by HCl and HCHO using AlCl3 as the catalyst. Polymer-bound Ru(III) complex catalysts were synthesized by sequential attachment of 1,2-diaminopropane to the copolymer beads followed by treatment with a metal salt. The catalysts were characterized by using various techni ques: FT-IR, SEM, EPR, NMR, ESCA, TGA, and UV-Vis reflectance spectros copy. Other physicochemical properties were determined: surface area b y the BET method, swelling studies with different solvents, and moistu re content. The catalytic behavior of the prepared catalysts was teste d for hydrogenation of cyclohexene as a model reaction. The influence on catalytic behavior of various parameters was studied: temperature, concentration of catalyst and substrate, quantity of solvent, and the use of various solvents. The recycling efficiency of the catalysts was also studied. A probable reaction mechanism is proposed.