Green and efficient dry gel conversion synthesis of SAPO-34 catalyst with plate-like morphology
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- 作者：Chun-Yu Di ; Xiao-Feng Li ; Ping Wang ; Zhi-Hong Li ; Bin-Bin Fan ; Tao Dou
- 关键词：SAPO ; 34 ; Dry gel conversion ; Green chemistry ; Seed suspension ; Plate ; like ; MTO
- 刊名：Petroleum Science
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：14
- 期：1
- 页码：203-213
- 全文大小：1932KB
- 刊物主题：Mineral Resources; Industrial Chemistry/Chemical Engineering; Industrial and Production Engineering; Energy Economics;
- 出版者：China University of Petroleum (Beijing)
- ISSN：1995-8226
- 卷排序：14
文摘
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 corresponding 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.