Selective Hydrogenation of Crotonaldehyde over Gallia and Germania Supported Ruthenium Catalysts in a Gas Phase

摘要

Hydrogenation of crotonaldehyde in a gas phase at atmospheric pressure over Ru/support catalysts was studied.Ruthenium nitrozyloazotane Ru(NO)(N03)3 and three supports:alpha-Ga2O3 (60.4 m2/g),beta-Ga2O3 (2.2 m2/g) and alpha-GeC>2 (3.8 m2/g) were used for catalyst preparation with the nominal ruthenium content 5 wt.% and for the catalysts supported on alpha-Ga2O3 also 2 and 1 wt.%.The row of the catalytic performance of catalysts is as follows:5 wt.% Ru/alpha-Ga2O3 > 5 wt.% Ru/beta-Ga2O3 > 5 wt.% Ru/alpha-GeO2.The best catalyst,5 wt.% Ru/alpha-Ga2O3,shows high selectivity to desired product-crotyl alcohol (above 85%) with the activity ca.300 mu mol s~~(-1) g_(Ru)~(-1).