Catalyst for preparing gamma-butyrolactone through maleic anhydride liquid phase hydrogenation, preparation method and application of catalyst, and method for preparing gamma-butyrolactone

• Main Authors: FENG HAIQIANG, ZHU YUEHUI, ZHAO KAIJING, GAO JIDONG
• Format: Patent
• Language: Chinese; English
• Published: 05.05.2020
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; HETEROCYCLIC COMPOUNDS; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention belongs to the technical field of catalysts, and discloses a catalyst for preparing gamma-butyrolactone through maleic anhydride liquid phase hydrogenation, a preparation method and application of the catalyst, and a method for preparing gamma-butyrolactone. The catalyst comprises the following components in percentage by weight: 20-70wt% of CuO, 25-75wt% of ZnO, 25-15wt% of SnO and2-8wt% of SiO2. The catalyst has high activity and selectivity, the conversion rate of maleic anhydride is greater than or equal to 95%, and the selectivity of gamma-butyrolactone is greater than or equal to 90%. 本发明属于催化剂技术领域，公开了一种用于顺酐液相加氢制γ-丁内酯的催化剂及其制备方法和应用以及制γ-丁内酯的方法，以催化剂的总重量计，该催化剂包括：CuO 20-70wt％、ZnO 25-75wt％、SnO5-15wt％、SiO2-8wt％。本发明的催化剂具有较高的活性和选择性，顺酐转化率≥95％，γ-丁内酯选择性≥90％。