Alumina catalyst for catalytic production of methyl isobutyl ketone from acetone.

摘要

Alumina (preferably gamma type) is soaked in an aqueous solution of niobium compound, e.g. niobium hydroxide or hydrated niobium oxide each in oxalic acid, e.g. for 3 hours, the soaked alumina is removed, dried and calcined at 150-500 DEG C to form a carrier comprising 50-95 wt% of alumina and 5-50 wt% of niobium oxide. Palladium is supported on the carrier before or after the process, in amount of 0.01-5 wt%. The resultant catalyst is used in a one-stage reaction in which acetone and hydrogen are reacted at a temperature of 80-250 DEG C and a pressure of atmospheric to 50 atms, in fixed bed flow over the catalyst in a reactor or by suspending the catalyst in acetone and blowing the hydrogen therethrough; the product is methyl isobutyl ketone in a selectivity of at least 90% and an acetone conversion rate of at least 28%. The catalyst has good activity and long life.