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Synthesis of SAPO-34 templated by diethylamine: Crystallization process and Si distribution in the crystals
Liu, Guangyu1,2; Tian, Peng1; Zhang, Ying1,2; Li, Jinzhe1,2; Xu, Lei1; Meng, Shuanghe1; Liu, Zhongmin1; Liu ZM(刘中民); Liu ZM(刘中民)
关键词Sapo-34 Diethylamine Characterization Crystallization Mechanism Si Distribution
刊名MICROPOROUS AND MESOPOROUS MATERIALS
2008-09-01
DOI10.1016/j.micromeso.2008.01.030
114期:1-3页:416-423
收录类别SCI
文章类型Article
部门归属8
项目归属803
产权排名1;1
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]METHANOL-TO-HYDROCARBONS ; MOLECULAR-SIEVES ; SILICON INCORPORATION ; OLEFIN CONVERSION ; LIGHT OLEFINS ; NMR ; MECHANISMS ; MORPHOLINE ; STABILITY ; ZEOLITES
英文摘要The crystallization process of SAPO-34 molecular sieve with Si distribution in the crystals using diethylamine (DEA) as the template was investigated by XRD, SEM, IR, NMR, XRF, XPS and EDS techniques. It was found that the solution-mediated transport mechanism occurred during the crystallization, though the gel transformation cannot be completely excluded in the initial crystallization (t <= 1 h). Si directly participated in the crystallization in the initial stage and incorporated into the framework of SAPO-34 by SM2 (P substitution by Si) and SM3 (pairs of Al and P substitution by 2Si) mechanisms. XPS analysis revealed the enrichment of Si on the surface of crystals. Based on the experimental results, a model of Si distribution in the crystals was proposed, which described a non-uniform distribution of Si in the crystals, with the increasing content from the core to the surface. (C) 2008 Elsevier Inc. All rights reserved.
语种英语
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WOS记录号WOS:000258432100042
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被引频次:79[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/321008/100631
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); Liu ZM(刘中民)
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Lab Appl Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
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GB/T 7714
Liu, Guangyu,Tian, Peng,Zhang, Ying,et al. Synthesis of SAPO-34 templated by diethylamine: Crystallization process and Si distribution in the crystals[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2008,114(1-3):416-423.
APA Liu, Guangyu.,Tian, Peng.,Zhang, Ying.,Li, Jinzhe.,Xu, Lei.,...&刘中民.(2008).Synthesis of SAPO-34 templated by diethylamine: Crystallization process and Si distribution in the crystals.MICROPOROUS AND MESOPOROUS MATERIALS,114(1-3),416-423.
MLA Liu, Guangyu,et al."Synthesis of SAPO-34 templated by diethylamine: Crystallization process and Si distribution in the crystals".MICROPOROUS AND MESOPOROUS MATERIALS 114.1-3(2008):416-423.
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