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学科主题物理化学
Investigation of the Crystallization Process of SAPO-35 and Si Distribution in the Crystals
Tian, Peng1; Li, Bing1,2; Xu, Shutao1; Su, Xiong1,2; Wang, Dehua1,2; Zhang, Lin1; Fan, Dong1,2; Qi, Yue1; Liu, Zhongmin1; Liu ZM(刘中民)
刊名JOURNAL OF PHYSICAL CHEMISTRY C
2013-02-28
ISSN10.1021/jp311334q
DOI10.1021/jp311334q
117期:8页:4048-4056
收录类别SCI
合作性质
文章类型Article
部门归属DNL12
项目归属DNL1202
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]SOLID-STATE NMR ; SILICOALUMINOPHOSPHATE MOLECULAR-SIEVES ; MICROPOROUS ALUMINOPHOSPHATE ALPO4-11 ; DIFFERENT FRAMEWORK TOPOLOGIES ; DRY-GEL CONVERSION ; ANGLE-SPINNING NMR ; INORGANIC SOLIDS ; SPECTROSCOPY ; ZEOLITES ; KINETICS
英文摘要The hydrothermal crystallization of SAPO-35 molecular sieve is examined in the present study. Many characterization methods including XRD, SEM, XRF, XPS, EDS, and various solid-state NMR techniques are applied to monitor the formation process of SAPO-35 and the development of the local environments of Si, P, and Al atoms as a function of crystallization time. The results show that an intermediate phase with ordered structure and AlPO compositions first forms. Subsequently, SAPO-35 crystallizes at the expense of the intermediate phase. Si takes part in the formation of SAPO-35 since the initial crystallization. The Si concentration in SAPO-35 shows an increasing trend with time, which leads to the change of both Si and Al coordination environments. More information is obtained from two-dimensional Al-27 MQ MAS and Al-27 -> P-31 MQ-MAS HETCOR NMR. Moreover, XPS analysis reveals the enrichment of Si on the crystal surface. On the basis of the characterization results, it is supposed that the distribution of Si in the SAPO-35 crystals is not uniform, showing a gradual increase from the core to the external surface.
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:000318211800041
引用统计
被引频次:17[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/321008/119420
专题中国科学院大连化学物理研究所
通讯作者Liu ZM(刘中民)
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Natl Engn Lab Methanol Olefins, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
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GB/T 7714
Tian, Peng,Li, Bing,Xu, Shutao,et al. Investigation of the Crystallization Process of SAPO-35 and Si Distribution in the Crystals[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2013,117(8):4048-4056.
APA Tian, Peng.,Li, Bing.,Xu, Shutao.,Su, Xiong.,Wang, Dehua.,...&刘中民.(2013).Investigation of the Crystallization Process of SAPO-35 and Si Distribution in the Crystals.JOURNAL OF PHYSICAL CHEMISTRY C,117(8),4048-4056.
MLA Tian, Peng,et al."Investigation of the Crystallization Process of SAPO-35 and Si Distribution in the Crystals".JOURNAL OF PHYSICAL CHEMISTRY C 117.8(2013):4048-4056.
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