Molecular engineering of microporous crystals: (III) The influence of water content on the crystallization of microporous aluminophosphate AlPO4-11

CORC > 武汉物理与数学研究所 > 中国科学院武汉物理与数学研究所 > 磁共振应用研究部

	Molecular engineering of microporous crystals: (III) The influence of water content on the crystallization of microporous aluminophosphate AlPO4-11
	Zhang, Bin 1; Xu, Jun 2; Fan, Fengtao 3; Guo, Qiang 3; Tong, Xiaoqiang 1; Yan, Wenfu 1; Yu, Jihong 1; Deng, Feng 2; Li, Can 3; Xu, Ruren 1
刊名	MICROPOROUS AND MESOPOROUS MATERIALS
	2012
卷号	147 期号:1 页码:212-221
关键词	Aluminophosphate AlPO4-11 AEL Crystallization Zeolite
英文摘要	The influence of water content on the crystallization of the microporous aluminophosphate AlPO4-11 was investigated by a combination of in situ UV Raman and ex situ XRD and NMR characterizations. Under high water content conditions (Al2O3:H2O = 1:20-69), an AlPO4-5 intermediated formed first and later co-existed with AlPO4-11. In the last stage of crystallization, the crystalline AlPO4-5 completely disappeared and well-crystallized AlPO4-11 was obtained. The position of the three signals observed in the P-31 MAS NMR spectra of the isolated solid samples did not change during the hydrothermal treatment, suggesting that the fragments containing the P site in the junction of 6- and 4-membered rings of both AlPO4-5 and AlPO4-11 formed first and that the environments of the P sites were very similar to those in the final structure. A significant increase of Al concentration in liquid media was observed before the appearance of XRD detectable AlPO4-11. Under low water content conditions (Al2O3:H2O = 1:15), the AlPO4-11 was directly crystallized from the initial mixture. In situ Raman spectra showed that the 10-membered rings were complete by the time the transformation of octahedral Al to tetrahedral Al was finished and that the conformation of the protonated di-(i-propyl)amine changed little during the crystallization. The present study showed that the composition of the liquid phase is critical to the formation of a specific structure. (C) 2011 Elsevier Inc. All rights reserved.
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Chemistry, Applied ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
研究领域[WOS]	Chemistry ; Science & Technology - Other Topics ; Materials Science
关键词[WOS]	DRY-GEL CONVERSION ; SOLID-STATE NMR ; SIEVE SYNTHESIS ; P-31 ; SPECTROSCOPY ; PHOSPHATES ; MECHANISM ; HYDRATION ; ZEOLITES ; ALUMINUM
收录类别	SCI
语种	英语
WOS记录号	WOS:000295906200028
公开日期	2015-07-14
内容类型	期刊论文
源URL	[http://ir.wipm.ac.cn/handle/112942/1724]
专题	武汉物理与数学研究所_磁共振应用研究部
作者单位	1.Jilin Univ, Coll Chem, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Peoples R China 2.Chinese Acad Sci, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan Inst Phys & Math, Wuhan 430071, Peoples R China 3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Bin,Xu, Jun,Fan, Fengtao,et al. Molecular engineering of microporous crystals: (III) The influence of water content on the crystallization of microporous aluminophosphate AlPO4-11[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2012,147(1):212-221.
APA	Zhang, Bin.,Xu, Jun.,Fan, Fengtao.,Guo, Qiang.,Tong, Xiaoqiang.,...&Xu, Ruren.(2012).Molecular engineering of microporous crystals: (III) The influence of water content on the crystallization of microporous aluminophosphate AlPO4-11.MICROPOROUS AND MESOPOROUS MATERIALS,147(1),212-221.
MLA	Zhang, Bin,et al."Molecular engineering of microporous crystals: (III) The influence of water content on the crystallization of microporous aluminophosphate AlPO4-11".MICROPOROUS AND MESOPOROUS MATERIALS 147.1(2012):212-221.