Surface dealuminated Beta zeolites supported WO3 catalyst and its catalytic performance in tetralin hydrocracking  

作　　者：Yan-Ting Zhang Ni-Ni Zhang Sheng-Li Chen Hui Dang Tao Wu 

机构地区：[1]State Key Laboratory of Heavy Oil Processing,College of Chemical Engineering,China University of Petroleum-Beijing,Beijing 102249,China

出　　处：《Petroleum Science》2022年第6期3116-3123,共8页石油科学（英文版）

摘　　要：In this study,selective dealumination of Beta zeolites was performed through partially removing the templating agent in Beta zeolites by calcination and then removing the aluminum on the external surface of Beta zeolites with acid treatment.Hydrocracking catalysts were prepared by loading WO_(3)onto these dealuminated Beta zeolites.It was shown that the surface SiO_(2)/Al_(2)O_(3)of selectively dealuminated Beta zeolites was higher than that of conventionally dealuminated samples for the same bulk SiO_(2)/Al_(2)O_(3),and the hydrogenation activity of the catalyst of the selectively dealuminated Beta zeolites was lower than that of conventionally dealuminated Beta zeolites.The experimental results for tetralin hydrocracking to BTX showed that the catalysts based on the selectively dealuminated Beta zeolites had higher BTX selectivity and lower coke formation rate than that the catalysts based on the conventionally dealuminated Beta zeolites.

关 键 词：Beta zeolites DEALUMINATION CALCINATION HYDROCRACKING 

分 类 号：TE624.9[石油与天然气工程—油气加工工程]