Abstract
Abstract A novel catalyst of SO 4 2 − over Ti 3 AlC 2 ceramic was prepared by an impregnation method. The resulting catalyst exhibited high catalytic activity and selectivity for the esterification of benzoic acid to ethyl benzoate. This study realized 80.4% conversion for benzoic acid and >99% selectivity for ethyl benzoate under 120 °C at 34 h. Various characteristics of the reaction were studied, such as performance of Ti 3 AlC 2 and SO 4 2 − /Ti 3 AlC 2 , the influence of bases, reaction temperature, reaction time, and recycling of the catalyst. In order to further study this reaction system, the XRD and FT-IR of SO 4 2 − /Ti 3 AlC 2 was detected and analyzed. All results indicate that SO 4 2 − /Ti 3 AlC 2 can serve as an acid catalyst.
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