Influence of Initial Water Content on Synthesis of Silicalite-1 Zeolite

作     者：Zhang Honghan Zhang Shanhe Wang Haoren Li Chunyi 

作者机构：State Key Laboratory of Heavy Oil Processing China University of Petroleum Qingdao 266580 

出 版 物：《China Petroleum Processing & Petrochemical Technology》 (中国炼油与石油化工（英文版）)

年 卷 期：2017年第19卷第4期

页      面：11-19页

核心收录：

学科分类：0820[工学-石油与天然气工程] 081705[工学-工业催化] 0817[工学-化学工程与技术] 08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the National 973 Program of China (No.2012CB215006) the Research Fund for the Doctoral Programme of Higher Education (No.14CX06035A) 

主　　题：initial water content hierarchical pore silicalite-1 MTP 

摘      要：The effect of initial water content on the synthesis of silicalite-1 zeolite and its reaction performance in methanol to propylene(MTP) reaction was comprehensively investigated. The as-synthesized samples were characterized by XRD,N_2 adsorption and desorption, SEM, and FTIR techniques, and studied for the methanol to propylene(MTP) reaction. The results showed that the initial water content played a crucial role on the particle size and porous structure of the silicalite-1 zeolites. It was found that adding initial water to reach a certain amount, the crystal size reduced obviously and the mesoporous structure appeared. Upon applying the silicalite-1 zeolite samples in the MTP reaction, they showed excellent catalytic performance to reach a highest propene mass yield of 26.81%(on the CH_2 basis) and a P/E ratio of 6.28 in 2 h. The excellent catalytic performance of silicalite-1 can be attributed to its mesoporous structure.