Pd/C 촉매에서 무수말레인산의 수소화 반응

Abstract

In this study, synthesis of succinic acid from hydrogenation of maleic anhydride over commercial Pd/C performed in aqueous solution at various reaction conditions such as agitation speed, reaction pressure, reaction temperature, reaction time and catalyst amount. We confirmed that distribution of product was different according to process parameters in batch type reactors under mild condition. Also, Pd/C catalyst were prepared by ion exchange, which was compared with the commercial Pd/C catalyst. In the results of this study, we conformed that the by-products were decreased by increasing reaction pressure and agitation speed, and the purity of succinic acid was increased by increasing reaction pressure and agitation speed. But, reaction temperature and catalyst amount were not affected for conversion of maleic anhydride. Then, Pd/C catalyst was prepared to compare with activity of commercial catalyst. We confirmed that pre-treatment of carbon has an effect on Pd particle distribution. In case for prepared Pd/C catalyst using the pretreated carbon, the distribution of Pd was increased 2 times than otherwise. Therefore, pre-treatment is necessary for high distribution of Pd particles. From the results of evaluated activity, we confirmed that prepared Pd/C catalyst was better than commercial Pd/C catalyst, because of good distribution.