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
谢文俊 1解晓伟1
作者信息
- 1. 广东工业大学轻工化工学院,广东 广州 510006
- 折叠
摘要
采用湿法浸渍制备了BN、SiO2 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SiO2 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.
Abstract
Three Cu catalysts supported on BN,SiO2 and MgO 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 SiO2 and MgO-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Key words
Cu catalyst/maleic anhydride/succinic anhydride/carrier引用本文复制引用
出版年
2024
NETL
NSTL
万方数据