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

• 来源期刊: 石油科学（英文版）
• 年，卷（期）: 2017,（1）
• 页码范围: 203-213
• 页数: 11页
• 语种: 英文
• DOI: 10.1007/s12182-016-0145-y

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 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.