Intergrown Zeolite MWW Polymorphs Prepared by the Rapid   Dissolution-Recrystallization Route

doi:10.1021/acs.chemmater.5b03658

CORC > 北京大学 > 化学与分子工程学院

	Intergrown Zeolite MWW Polymorphs Prepared by the Rapid Dissolution-Recrystallization Route
	Xu, Le ; Ji, Xinyi ; Jiang, Jin-Gang ; Han, Lu ; Che, Shunai ; Wu, Peng
刊名	CHEMISTRY OF MATERIALS
	2015
关键词	INTERCONNECTED 12-RING CHANNELS X-RAY-DIFFRACTION MOLECULAR-SIEVE ELECTRON CRYSTALLOGRAPHY STRUCTURAL-CHARACTERIZATION BOROSILICATE ZEOLITE LAMELLAR PRECURSORS POROUS MATERIALS MCM-22 BETA
DOI	10.1021/acs.chemmater.5b03658
英文摘要	Zeolites with intergrown structures are particularly interesting because they often exhibit unique performance in heterogeneous catalysis. This raises the bar of the structural characterizations and remains an enormous challenge to understand the synthesis conditions and the formation mechanisms of such intergrown materials. Herein, a novel intergrown zeolite (ECNU-5) was successfully synthesized via a rapid dissolution recrystallization (RDR) route, which reorganized the conventional MWW layer stacking into two new different polymorphs, ECNU-5A and ECNU-5B. Structure elucidation indicates both polymorphs are reconstructed from the same MWW layer but are different in relative shift between adjacent layers. ECNU-5 is the first structure-determined zeolite with interrupted structure that MWW layers shift in the horizontal direction, in which the two polymorphs are never predicted before and are additional members of the MVVW family. The unique geometry mismatch between the organic structure-directing agent (OSDA) and inorganic silicate framework is ascribed to causing the zeolite layer shift. Moreover, the implementation of silylation technique readily expanded the interlayer pore of as-made ECNU-5, producing the interlayer-expanded zeolite (IEZ-ECNU-5), which maintained the original stacking sequence of MWW sheets.; NSFC of China [21373089, 21201120, 21533002]; Programs Foundation of MOE of China [2012007613000]; SLAD [B409]; National Excellent Doctoral Dissertation of PR China [201454]; SCI(E); EI; ARTICLE; luhan@sjtu.edu.cn; pwu@chem.ecnu.edu.cn; 23; 7852-7860; 27
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/435842]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Xu, Le,Ji, Xinyi,Jiang, Jin-Gang,et al. Intergrown Zeolite MWW Polymorphs Prepared by the Rapid Dissolution-Recrystallization Route[J]. CHEMISTRY OF MATERIALS,2015.
APA	Xu, Le,Ji, Xinyi,Jiang, Jin-Gang,Han, Lu,Che, Shunai,&Wu, Peng.(2015).Intergrown Zeolite MWW Polymorphs Prepared by the Rapid Dissolution-Recrystallization Route.CHEMISTRY OF MATERIALS.
MLA	Xu, Le,et al."Intergrown Zeolite MWW Polymorphs Prepared by the Rapid Dissolution-Recrystallization Route".CHEMISTRY OF MATERIALS (2015).