Catalytic Hydrogenation of Olefins in Supercritical Carbon Dioxide Using Rhodium Catalysts Supported on Fluoroacrylate Copolymers

摘要

A novel catalyst soluble in scCO_2 was synthesized by grafting rhodium ligands to a fluoroacrylate copolymer. Different compositions of copolymer, Rh/copolymer molar ratios, and substrate/catalyst molar ratios were studied for the hydrogenation of 1-octene in scCO_2 at 70℃ and 172 bar. Also, the effect of temperature at 172 bar, and the effect of pressure at 70℃ were analyzed for the same reaction. The products for the hydrogenation of 1-octene were mostly n-octane together with isomerization products. Finally, a comparative study of the hydrogenation of 1-octene and cyclohexene was carried out at 70℃ and 172 bar.