负载型Cu催化剂上马来酸酐选择性加氢制备琥珀酸酐  

Selective Hydrogenation of Maleic Anhydride to Succinic Anhydride on Supported Cu Catalysts

作　　者：谢文俊 解晓伟 Xie Wenjun;Xie Xiaowei(School of Chemical Engineering and Light Industry,Guangdong University of Technology,Guangzhou Guangdong 510006,China)

机构地区：[1]广东工业大学轻工化工学院,广东广州510006

出　　处：《山西化工》2024年第11期59-60,63,共3页Shanxi Chemical Industry

摘　　要：采用湿法浸渍制备了BN、SiO_(2)和MgO三种不同载体负载的Cu催化剂,负载量均为2.5%(质量分数)。考察不同载体对马来酸酐选择加氢制备琥珀酸酐的影响,结果表明,BN负载的Cu催化剂催化马来酸酐加氢制备琥珀酸酐的性能优于SiO_(2)和MgO负载的Cu催化剂。通过条件优化测试发现,反应温度对催化剂的催化性能影响很大,低温条件下催化活性很低,但是琥珀酸酐的选择性很高;高温条件下催化活性很高,但琥珀酸酐选择性很低。反应时间对催化性能影响同样很大,随着反应时间的延长,马来酸酐的转化率呈现上升趋势,但琥珀酸酐选择性却逐步下降,其主要原因是深度加氢产物选择性逐渐上升。Three Cu catalysts supported on BN,Si O_(2)and Mg O were prepared by wet impregnation with Cu loading of 2.5%,and tested in maleic anhydride hydrogenation to succinic anhydride.The results showed that the performance of the BN-supported Cu catalyst is better than that of the Si O_(2)and Mg O-supported Cu catalysts.Through the condition optimization,it was found that the reaction temperature has a great influence on the catalytic performance.The catalytic activity was very low under low temperatures with a high selectivity to succinic anhydride,while the opposite was true at high temperatures.With the extension of reaction time,the conversion rate of maleic anhydride increased,but the selectivity to succinic anhydride gradually decreased,mainly due to the gradual increase of the selectivity to deep hydrogenation products.

关 键 词：CU催化剂 马来酸酐 琥珀酸酐 载体 

分 类 号：TQ426.8[化学工程]