CATALYST FOR 1,3-PENTADIENE ACETOXYLATION Russian patent published in 1996 - IPC

FIELD: chemical technology. SUBSTANCE: catalyst has intermetallide of rhodium bismuthide of empirical formula БФ RhBi₄ 12.5-14.5 wt.-%, and activated carbon - the rest. Powder-like activated carbon is treated with nitric acid and evaporated until dry on the water bath. Treated carbon is impregnated with solution containing rhodium chloride and bismuth nitrate in nitric and hydrochloric acids mixture, evaporated until dry at stirring on the water bath, calcined in the air and reduced in moisture hydrogen flow at 250 C for 2.5 hr and at 420 C for 1.5 hr. Catalyst properties: conversion of 1,3-pentadiene is 98.4-99.2%, selectivity of 1,4-diacetoxypentenes formation is 72.4-74.9%. EFFECT: increased catalytic acivity of catalyst. 4 tbl