Selective Hydrogenation of Maleic Anhydride to Succinic Anhydride on Supported Cu Catalysts
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.
Cu catalystmaleic anhydridesuccinic anhydridecarrier
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