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Integration of Selective Hydrogenation of Benzene and Hydration of Cyclohexene on Mechanical Mixed Catalyst

WEI Jun-fang,WANG Yan-ji,XUE Wei,LI Juan(Key Laboratory of Green Chemical Technology and High-efficient Energy Saving of Hebei Province,Hebei University of Technology,Tianjin 300130,China)  
The integration of partial hydrogenation of benzene and hydration of cyclohexene with mechanical mixed Ru-Zn+HZSM-5 catalysts(produced by Asahi Chemical Industry Co.) was investigated in a batch reactor.The addition of HZSM-5 resulted in high conversion of benzene and low selectivity of cyclohexene.It was thought to be the result of the effect of hydrogen spillover.The addition of ZnSO4 resulted in decreasing of cyclohexene conversion and cyclohexanol yield.It was found that the existence of Zn2+ on the surface of HZSM-5 resulted in decreasing of B acid.A dynamic operation by pulsed hydrogenation for the integration system was investigated.The reaction conditions of the integrated reaction were optimized and the yield of cyclohexene and cyclohexanol was increased.
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