Efficient Synthesis of High-Silica Ssz-13 Zeolite and its Catalytic Performance in Mto Reaction

作     者：Zhu, Xiaochu Gao, Yu Liu, Meng Yang, Ziyao Li, ShuangShuang Chen, Haorong Liu, Bonan Ma, Wangjing Hensen, Emiel J.M. Shen, Baojian 

作者机构：State Key Laboratory of Heavy Oil Processing The Key Laboratory of Catalysis of CNPC College of Chemical Engineering and Environment China University of Petroleum Beijing102249 China Technical Institute of Physics and Chemistry Chinese Academy of Sciences 29 Zhongguancun East Road Beijing100190 China Laboratory of Inorganic Materials Chemistry Eindhoven University of Technology PO Box 513 Eindhoven5600 MB Netherlands 

出 版 物：《SSRN》 

年 卷 期：2022年

核心收录：

主　　题：Zeolites 

摘      要：Highly efficient synthesis of zeolites is an important goal given the many catalytic applications of zeolites in industrial chemical processes. The conventional zeolite syntheses, i.e., hydrothermal synthesis in a batch setup are usually challenged by certain limiting factors deriving from the long synthesis period or the low yield. Herein, we report that a combined strategy of organic promoter and zeolite seeding can remarkably improve the synthetic efficiency of high silica SSZ-13 zeolite. The low-cost promoter diethylamine (DEA) and zeolite seeds could both remarkably accelerate the crystallization rate of SSZ-13 zeolite, and DEA has a much higher beneficial effect on the solid yield as compared to the zeolite seeds. Consequently, the crystallization time could be unprecedentedly shorted by a factor of 30, instead of multiple days normally required. Besides, this novel protocol also exhibits high atom efficiency (93% of yield). The resultant high-silica nano-sized SSZ-13 zeolite shows good (hydro)thermal stability along with excellent catalytic performance for the MTO reaction. Furthermore, the strategy has been extended to the fast synthesis of other zeolitic material, like ZSM-5, implying its general applicability in highly efficient synthesis of zeolites. © 2022, The Authors. All rights reserved.