Crystallization of magnesium substituted aluminophosphate of type-36 as studied by solid-state NMR spectroscopy
文献类型：期刊论文
| 作者 | Xu, Jun1; Zhou, Dan2; Song, Xiaowei2; Chen, Lei1; Yu, Jihong2; Ye, Chaohui1; Deng, Feng1 |
| 刊名 | MICROPOROUS AND MESOPOROUS MATERIALS
 |
| 出版日期 | 2008-11-01 |
| 卷号 | 115期号:3页码:576-584 |
| 关键词 | molecular sieve MgAPO-36 intermediate gels solid-state NMR synthesis mechanism |
| 英文摘要 | The crystallization process of aluminophosphate molecular sieve MgAPO-36 is characterized by the evolution of intermediate gels. Multinuclear solid-state NMR techniques in combination with powder X-ray diffraction (PXRD) and scanning electron microscopy (SEM) reveal in detail the nature of the intermediate gels and their evolution into crystalline structure. The long-range ordering of the aged as well as heated intermediate gels are probed by PXRD, showing that the crystallization of the framework begins after heating the gels at 423 K for 1.5 h. (31)P NMR indicated that the structural Al-O-P and Mg-O-P units from the ATS framework are formed at the same time. More information about the local ordering of the gels is obtained from two-dimensional (27)Al -> (31)P HETCOR and (1)H -> (31)P CP/MAS experiments. Two types of microstructure regions could be differentiated by partially and fully condensed P species, in which five types of P(nAl) (n = 2-4) units are identified by (31)P/(27) Al double-resonance experiments. A possible evolution mechanism consisting of three stages is proposed for the crystallization process. (c) 2008 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] | MOLECULAR-SIEVE SYNTHESIS ; IN-SITU ; ATS STRUCTURE ; NEUTRON-DIFFRACTION ; QUADRUPOLAR NUCLEI ; MULTISPIN SYSTEMS ; GEL PHASES ; P-31 NMR ; PHOSPHATES ; FRAMEWORK |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000259845000043 |
| 公开日期 | 2015-10-13 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/8042]  |
| 专题 | 武汉物理与数学研究所_2011年以前论文发表（包括2011年） |
| 作者单位 | 1.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China 2.Jilin Univ, Coll Chem, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Jun,Zhou, Dan,Song, Xiaowei,et al. Crystallization of magnesium substituted aluminophosphate of type-36 as studied by solid-state NMR spectroscopy[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2008,115(3):576-584. |
| APA | Xu, Jun.,Zhou, Dan.,Song, Xiaowei.,Chen, Lei.,Yu, Jihong.,...&Deng, Feng.(2008).Crystallization of magnesium substituted aluminophosphate of type-36 as studied by solid-state NMR spectroscopy.MICROPOROUS AND MESOPOROUS MATERIALS,115(3),576-584. |
| MLA | Xu, Jun,et al."Crystallization of magnesium substituted aluminophosphate of type-36 as studied by solid-state NMR spectroscopy".MICROPOROUS AND MESOPOROUS MATERIALS 115.3(2008):576-584. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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