论文成果
Constructing Hierarchical Zeolites with Highly Complete Framework via Controlled Desilication
摘要:Desilication in alkaline medium has been widely used in construction of hierarchical zeolites for industrially relevant catalytic processes. The built of hierarchy in zeolites, especially with low aluminum stability or high Si/Al ratio, often suffers from uncontrolled destruction of zeolitic framework, accompanied by a significant loss of microporous domains and intrinsic acidity after desilication. Here, we report a novel and simple methodology for preparation of hierarchical zeolites with highly complete framework and minimum sacrifice of microporosity and acidity. The pre-impregnated amines in zeolite micropores act as inner pore-directing agents (iPDAs), largely protecting the zeolitic framework and moderating the silicon extraction during the alkaline treatment. The resulting hierarchical zeolites exhibit high crystallinity, tunable hierarchy, stable framework, and well-preserved acidity, endowing them with significantly improved mass transport properties and enhanced activities in catalytic conversion of methanol or furfural.
关键字:Acidity; crystallinity; desilication; hierarchical zeolite; inner pore-directing agent
ISSN号:1433-7851
卷、期、页:卷63:1-9
发表日期:2024-12-09
影响因子:0.000000
期刊分区(SCI为中科院分区):一区
收录情况:SCI(科学引文索引印刷版),SCIE(科学引文索引网络版)
发表期刊名称:ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
参与作者:沈焰丰,汲永刚,覃正兴
通讯作者:高羽,陈皓荣,江蒙伟,王鑫雨,苗彩霞
第一作者:朱小春,吴志杰,宋卫余,徐春明,申宝剑
论文类型:期刊论文
论文概要:朱小春,高羽,陈皓荣,江蒙伟,王鑫雨,苗彩霞,沈焰丰,汲永刚,覃正兴,吴志杰,宋卫余,徐春明,申宝剑,Constructing Hierarchical Zeolites with Highly Complete Framework via Controlled Desilication,ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,2024,卷63:1-9
论文题目:Constructing Hierarchical Zeolites with Highly Complete Framework via Controlled Desilication