Green and efficient dry gel conversion synthesis of SAPO-34 catalyst with plate-like morphology  

作　　者：Chun-Yu Di Xiao-Feng Li Ping Wang Zhi-Hong Li Bin-Bin Fan Tao Dou 

机构地区：[1]College of Chemistry and Chemical Engineering, Taiyuan University of Technology [2]CNPC Key Laboratory of Catalysis, College of Chemical Engineering, China University of Petroleum,Beijing

出　　处：《Petroleum Science》2017年第1期203-213,共11页石油科学（英文版）

摘　　要：SAPO-34 catalyst with plate-like morphology was designed and synthesized for the first time, by the dry gel conversion method using cheap triethylamine as a structure-directing agent assisted with seed suspension containing nanosheet-like SAPO-34 seed. The latter played an important role in formation of SAPO-34 （CHA-type） with plate-like morphology. In addition, the yield of the product in the synthesis system containing seed suspension reached 97%, 15% higher than that obtained in the corre- sponding synthesis system without the seed suspension. Meanwhile, the plate-like SAPO-34 catalysts synthesized by this method exhibited higher selectivity to light olefins and longer lifetime in methanol-to-olefins （MTO） reaction than the traditional cubic SAPO-34 catalyst. This work provides a new technical route for green and efficient synthesis of SAPO-34 catalysts with improved MTO performance.SAPO-34 catalyst with plate-like morphology was designed and synthesized for the first time, by the dry gel conversion method using cheap triethylamine as a structure-directing agent assisted with seed suspension containing nanosheet-like SAPO-34 seed. The latter played an important role in formation of SAPO-34 （CHA-type） with plate-like morphology. In addition, the yield of the product in the synthesis system containing seed suspension reached 97%, 15% higher than that obtained in the corre- sponding synthesis system without the seed suspension. Meanwhile, the plate-like SAPO-34 catalysts synthesized by this method exhibited higher selectivity to light olefins and longer lifetime in methanol-to-olefins （MTO） reaction than the traditional cubic SAPO-34 catalyst. This work provides a new technical route for green and efficient synthesis of SAPO-34 catalysts with improved MTO performance.

关 键 词：SAPO-34 Dry gel conversion GREENCHEMISTRY Seed suspension Plate-like - MTO 

分 类 号：O643.36[理学—物理化学]