Insights into the Organotemplate-Free Synthesis of Zeolite Catalysts  

作　　者：Yeqing Wang Qinming Wu Xiangju Meng Feng-Shou Xiao 

机构地区：[1]Key Lab of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou 310007, China

出　　处：《Engineering》2017年第4期567-574,共8页工程（英文）

基　　金：This work was supported by the National Natural Science Foundation of China （21273197 and 21333009）.

摘　　要：As the most important nanoporous material, zeolites, which have intricate micropores, are essential heterogeneous catalysts in industrial processes. Zeolites are generally synthesized with organic templates under hydrothermal conditions; however, this method is environmentally unfriendly and costly due to the formation of harmful gases and polluted water. This article briefly summarizes the role of organic templates and describes designed routes for the organotemplate-free synthesis of zeolites, aided by zeolite seeds and zeolite seeds solution. Furthermore, this review explicates that the micmpore volume decreases with an increase of the Si/Al ratios in the organotemplate-free synthesis of zeolite products, where Na^＋ exists as an alkali cation. This feature is very important in directing the synthesis of zeolite catalysts with controllable Si/AI ratios under organotemplate-free conditions, and is thus important for the efficient design of zeolites.

关 键 词：Zeolite seed-directed synthesis Organotemplate-free synthesis Zeolite seeds solution Si/Al ratiosZeolite micropore volume 

分 类 号：N[自然科学总论]