An efficient semihydrogenation of C-C triple bonds was achieved using palladium on pumice as the catalyst with a metal loading of 3% wt. The results obtained showed better selectivity when compared with Pd/C and better activity when computed with Lindlar's catalyst. Hydrogenation of sterically hindo'ed alkynes is slow on Pd/pumice. The selectivity with respect to alkenes is probably due to the presence of sodium ions in the pumice structure that increases the electron density on the supported metal.
Efficient Semihydrogenation of the C-C Triple Bond Using Palladium on Pumice as Catalyst
L F Liotta
1999
Abstract
An efficient semihydrogenation of C-C triple bonds was achieved using palladium on pumice as the catalyst with a metal loading of 3% wt. The results obtained showed better selectivity when compared with Pd/C and better activity when computed with Lindlar's catalyst. Hydrogenation of sterically hindo'ed alkynes is slow on Pd/pumice. The selectivity with respect to alkenes is probably due to the presence of sodium ions in the pumice structure that increases the electron density on the supported metal.File in questo prodotto:
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