METHOD FOR PRODUCING SUCCINIC ANHYDRIDE

摘要

PROBLEM TO BE SOLVED: To provide a method for producing succinic anhydride in high efficiency and productivity while keeping the catalytic activity in hydrogenation reaction over a long period. SOLUTION: Succinic anhydride is produced by the catalytic hydrogenation of maleic anhydride by a fixed bed continuous reaction in a multitube reactor using a ruthenium-supporting formed catalyst as the hydrogenation catalyst. The hydrogenation reaction is carried out in aγ-butyrolactone solution.