PALLADIUM-ALUMINA COMPLEX CATALYST FOR PRODUCTION OF G-BUTYROLACTONE BY HYDROGENATION OF SUCCINIC ACID, PREPARATION METHOD THEREOF AND PRODUCTION METHOD FOR G-BUTYROLACTONE BY HYDROGENATION OF SUCCINIC ACID USING SAID CATALYST

摘要

PURPOSE: A palladium-alumina complex catalyst for manufacturing gamma-butyrolactone based on the hydrogenation of succinic acid, a method for manufacturing the same, a method for manufacturing the gamma-butyrolactone using the catalyst are provided to use waste succinic acid as environmentally-friendly materials replacing maleic anhydride. CONSTITUTION: A palladium-alumina complex catalyst for manufacturing gamma-butyrolactone based on the hydrogenation of succinic acid includes an Al-O-Pd structure based on the chemical bond of alumina and palladium. In the complex catalyst, the content of palladium is 1 to 10 weight% of the total weight of alumina. The average pore size of the complex catalyst is between 2nm and 10nm. The surface area of the complex catalyst is between 10m^2/g and 400m^2/g. A method for manufacturing the complex catalyst includes the following: An aluminum precursor is dissolved, water and hydration synthetic catalyst are added to form alumina sol; a palladium precursor alcohol solution is added into the alumina sol to synthesize alumina-palladium complex sol; the alumina-palladium complex sol is cooled, and water is added into the cooled complex sol to obtain palladium-alumina complex gel; and the complex gel is aged, dried, and plasticized.