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学科主题物理化学
Multinuclear Solid-State NMR Studies on the Formation Mechanism of Aluminophosphate Molecular Sieves in Ionic Liquids
Xu, Renshun1; Zhang, Weiping2; Xu, Jun3; Tian, Zhijian1; Deng, Feng3; Han, Xiuwen1; Bao, Xinhe1; Zhang WP(张维萍); Bao XH(包信和)
刊名JOURNAL OF PHYSICAL CHEMISTRY C
2013-03-21
DOI10.1021/jp400422z
117期:11页:5848-5854
收录类别SCI
合作性质
文章类型Article
部门归属5,DNL08
项目归属502,DNL0802
产权排名待补充
WOS标题词Science & Technology ; Physical Sciences ; Technology
资助者1,1 ; 1,1 ; 1,1 ; 1,1
类目[WOS]Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
研究领域[WOS]Chemistry ; Science & Technology - Other Topics ; Materials Science
关键词[WOS]IONOTHERMAL SYNTHESIS ; ZEOLITE ; FRAMEWORKS ; SPECTROSCOPY ; INSIGHTS ; PHASES ; SYSTEM ; AMINES
英文摘要In the present work, multinuclear solid-state NMR techniques together with power X-ray diffraction (XRD) and scanning electron microscopy (SEM) were employed to monitor the crystallization process of aluminophosphate AlPO4-11 molecular sieves in 1-ethyl-3-methylimidazolium bromide ([emim]Br) ionic liquids (LLs). The local environments of the selected solid samples were probed by one-dimensional Al-27, P-31, and F-19 MAS NMR experiments, and more information was obtained from two-dimensional Al-27 -> P-31 heteronuclear correlation (HETCOR) and Al-27 triple-quantum MAS (3QMAS) experiments. It is found that a large amount of amorphous aluminophosphates was formed with the F-Al-oct-O-P-par and Al-tet-O-P-par structures in the initial stage of aging. With increasing crystallization time, the partially condensed framework phosphorus species disappeared gradually and became fully condensed. Meanwhile, the octahedral Al was transformed into the pentahedra] and tetrahedral Al species with the structures of F-Al-penta-O-P-ful and Al-tet-O-P-ful in the AlPO4-11 frameworks. During the crystallization process, [emim] cations acting as the structure-directing agents were occluded into the channels, and F- anions were connected with pentahedral Al in the final AlPO4-11 phase. All of these findings can allow proposing a possible formation mechanism for the synthesis of AlPO4-11 in ionic liquids.
语种英语
资助者1,1 ; 1,1 ; 1,1 ; 1,1
原文出处查看原文
WOS记录号WOS:000316773000039
引用统计
被引频次:14[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/119310
专题中国科学院大连化学物理研究所
通讯作者Zhang WP(张维萍); Bao XH(包信和)
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116024, Peoples R China
3.Chinese Acad Sci, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan Ctr Magnet Resonance, Wuhan Inst Phys & Math, Wuhan 430071, Peoples R China
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Xu, Renshun,Zhang, Weiping,Xu, Jun,et al. Multinuclear Solid-State NMR Studies on the Formation Mechanism of Aluminophosphate Molecular Sieves in Ionic Liquids[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2013,117(11):5848-5854.
APA Xu, Renshun.,Zhang, Weiping.,Xu, Jun.,Tian, Zhijian.,Deng, Feng.,...&包信和.(2013).Multinuclear Solid-State NMR Studies on the Formation Mechanism of Aluminophosphate Molecular Sieves in Ionic Liquids.JOURNAL OF PHYSICAL CHEMISTRY C,117(11),5848-5854.
MLA Xu, Renshun,et al."Multinuclear Solid-State NMR Studies on the Formation Mechanism of Aluminophosphate Molecular Sieves in Ionic Liquids".JOURNAL OF PHYSICAL CHEMISTRY C 117.11(2013):5848-5854.
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