Molecular engineering of microporous crystals: (VII) The molar ratio dependence of the structure-directing ability of piperazine in the crystallization of four aluminophosphates with open-frameworks

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	Molecular engineering of microporous crystals: (VII) The molar ratio dependence of the structure-directing ability of piperazine in the crystallization of four aluminophosphates with open-frameworks
	Tong, Xiaoqiang 1; Xu, Jun 2; Li, Xu 1; Li, Yi 1; Yan, Wenfu 1; Yu, Jihong 1; Deng, Feng 2; Sun, Huai 3; Xu, Ruren 1
刊名	MICROPOROUS AND MESOPOROUS MATERIALS
	2013-08-01
卷号	176 页码:112-122
关键词	Zeolite Aluminophosphate Templating effect Structure-directing ability Piperazine
英文摘要	The crystallization fields of initial mixtures with compositions of Al2O3:3.0 P2O5:x pip:277 H2O, where x = 2.4-12 and pip = piperazine, were investigated. Pure and highly crystalline three-dimensional (3D) AIPO-CJB2, two-dimensional (2D) AP2pip, 3D AlPO-JU88, and 2D AlPO-CJ9 were obtained when x = 3, 3.4, 6.5, and 12, respectively. Along with the increase in the ratio of piperazine to Al2O3 in the initial mixture, the density of piperazine in the final structure as well as the non-bonding interaction between the inorganic framework and the protonated piperazine increased. The crystallization processes of AlPO-CJB2, AP2pip, and AlPO-JU88 were investigated using multiple techniques. In the crystallization of AlPO-CJB2, a pure and highly crystalline AP2pip intermediate phase was first formed and then dissolved. A species that may promote the dissolution of AP2pip and the formation of AlPO-CJB2 was identified. Under the synthetic condition of AP2pip, however, this species was not formed; thus, the transformation of AP2pip to AlPO-CJB2 was not observed even for significantly prolonged crystallization times. Additionally, the crystallization rate of AP2pip was significantly accelerated by an increased molar ratio of the reactants with respect to the aluminum source. The results indicate that the type and concentration of the species in the liquid phase were the governing factors in determining the final products and that the formation of particular structures is energy-directed. (c) 2013 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 ; INITIAL-STAGE ; ZEOLITE SYNTHESIS ; SILICALITE-1 CRYSTALLIZATION ; LAYERED ALUMINOPHOSPHATES ; HYDROTHERMAL CONDITIONS ; IONOTHERMAL SYNTHESIS ; AL/P RATIO ; UV-RAMAN ; NMR
收录类别	SCI
语种	英语
WOS记录号	WOS:000320422400015
公开日期	2015-07-14
内容类型	期刊论文
源URL	[http://ir.wipm.ac.cn/handle/112942/870]
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, Wuhan Inst Phys & Math, Wuhan Ctr Magnet Resonance, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China 3.Shanghai Jiao Tong Univ, Coll Chem & Chem Engn, Shanghai 200240, Peoples R China
推荐引用方式 GB/T 7714	Tong, Xiaoqiang,Xu, Jun,Li, Xu,et al. Molecular engineering of microporous crystals: (VII) The molar ratio dependence of the structure-directing ability of piperazine in the crystallization of four aluminophosphates with open-frameworks[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2013,176:112-122.
APA	Tong, Xiaoqiang.,Xu, Jun.,Li, Xu.,Li, Yi.,Yan, Wenfu.,...&Xu, Ruren.(2013).Molecular engineering of microporous crystals: (VII) The molar ratio dependence of the structure-directing ability of piperazine in the crystallization of four aluminophosphates with open-frameworks.MICROPOROUS AND MESOPOROUS MATERIALS,176,112-122.
MLA	Tong, Xiaoqiang,et al."Molecular engineering of microporous crystals: (VII) The molar ratio dependence of the structure-directing ability of piperazine in the crystallization of four aluminophosphates with open-frameworks".MICROPOROUS AND MESOPOROUS MATERIALS 176(2013):112-122.