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