Molecular engineering of microporous crystals: (III) The influence of water content on the crystallization of microporous aluminophosphate AlPO4-11
文献类型：期刊论文
| 作者 | Zhang, Bin1; Xu, Jun2; Fan, Fengtao3; Guo, Qiang3; Tong, Xiaoqiang1; Yan, Wenfu1; Yu, Jihong1; Deng, Feng2; Li, Can3; Xu, Ruren1 |
| 刊名 | MICROPOROUS AND MESOPOROUS MATERIALS
 |
| 出版日期 | 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 |
| 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. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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