Sustainable Synthesis of Hierarchically Porous Silicalite-1 Zeolite by Steam-assisted Crystallization of Solid Raw Materials Without Secondary Templates  

作　　者：LIU Xiaofang ZENG Shangjing WANG Runwei ZHANG Zongtao QIU Shilun 

机构地区：[1]State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changehun 130012, E R. China [2]CAS Key Laboratory of Synthetic Rubber, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China

出　　处：《Chemical Research in Chinese Universities》2018年第3期350-357,共8页高等学校化学研究（英文版）

基　　金：Supported by the National Natural Science Foundation of China（Nos.21390394, 21261130584, 91022030, 21771082）, the National Basic Research Program of China（Nos.2012CB821700, 2011CB808703）, the ＂111＂ Project of China（No.B07016）, the Award Project of King Abdullah University of Science ＆ Technology（No.CRG-1-2012-LAI-009）, the Science and Technology Development Center Project of the Ministry of Education of China（No.20120061130012） and the Science and Technology Research Program of the 13th Five Year Plan of China（No.20120061130012） and the Fund of Education Department of Jilin Province, China（No.2016405）.

摘　　要：Hierarchical silicalite-1 zeolites were obtained from the direct conversion of a mixture of ground solid raw materials via a steam-assisted crystallization（SAC） method without involvement of any mesoscale template. Only a trace amount of water was necessary during the crystallization, implying that the amount of water can be dramatically reduced, which still offers easy separation and high yields. The simple procedure involved only grinding and heating, which not only saves resources and energy, but also significantly reduces the discharge of eco-friendly synthesis of zeolites for practical applications. Compared to conventional bulk silicalite-1, the nanosized hierarchical zeolites with MFI structure show enhanced removal capabilities for methylene blue owing to their hierarchical porosity.Hierarchical silicalite-1 zeolites were obtained from the direct conversion of a mixture of ground solid raw materials via a steam-assisted crystallization（SAC） method without involvement of any mesoscale template. Only a trace amount of water was necessary during the crystallization, implying that the amount of water can be dramatically reduced, which still offers easy separation and high yields. The simple procedure involved only grinding and heating, which not only saves resources and energy, but also significantly reduces the discharge of eco-friendly synthesis of zeolites for practical applications. Compared to conventional bulk silicalite-1, the nanosized hierarchical zeolites with MFI structure show enhanced removal capabilities for methylene blue owing to their hierarchical porosity.

关 键 词：Hierarchically silicalite-1 zeolite Steam-assisted crystallization Easy separation Secondary template excluding 

分 类 号：TQ174.758[化学工程—陶瓷工业] O643.36[化学工程—硅酸盐工业]