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《Journal of Beijing University of Chemical Technology(Natural Science Edition)》 2006-05
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Alkylation of benzene with propylene catalyzed by chloroaluminate ionic liquids

DONG Cong-cong SUN Ai-jun LI Chun-xi MENG Hong WANG Zi-hao(College of Chemical Engineering,Beijing University of Chemical Technology,Beijing 100029,China)  
A chloroaluminate ionic liquid consisting of triethylamine hydrochloride and anhydrous AlCl_3 was used to catalyze the alkylation of benzene with propylene.The effect of varying reaction conditions was investigated experimentally.The results show that the conversion of propylene and the selectivity to cumene are increased by increasing the mole fraction of AlCl_3 in the ionic liquid,the amount of catalyst,the mole ratio of benzene to propylene and the reaction time and by reducing the temperature.Under optimal conditions,with 66.7% mole fraction of AlCl_3 in the ionic liquid,10 wt% of catalyst with respect to benzene,10:1 molar ratio of benzene to propylene and temperature of 313K,both conversion of propylene and selectivity to cumene can reach 97.6% in 10 minutes.The activity of the catalyst remains essentially unchanged after being reused eight times,however,further work is still needed to improve the reusability of the catalyst.
【Fund】: 国家自然科学基金(20376004)
【CateGory Index】: O643.32
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