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Synthesis of SAPO-34 with rich Si(4Al) coordination environment in the framework and its catalytic performance in methanol-to-olefins reaction

文献类型：期刊论文

作者Xu Lei1,2; Du Aiping1; Wei Yingxu1; Meng Shuanghe1; He Yanli1; Wang Yingli1,2; Yu Zhengxi1,2; Zhang Xinzhi1; Liu Zliongmin1
刊名chinese journal of catalysis
出版日期2008-08-01
卷号29期号:8页码:727-732
关键词SAPO-34 molecular sieve hydrogen fluorine Si (4Al) coordination environment methanol-to-olefins reaction
英文摘要sapo-34 molecular sieve samples with rich si(4al) coordination environment were synthesized by adding hf in the initial gel. the crystalline phase, crystal morphology, elemental composition and si coordination environment of the as-synthesized samples were determined by means of x-ray diffraction, scanning electron microscopy, x-ray fluorescence spectroscopy, and nuclear magnetic resonance. the crystallization of sapo-34 molecular sieve can be adjusted by adding hf in the initial gel, and correspondingly, the si coordination modeling can be controlled. the proportion of si(4al) species in the as-synthesized sapo-34 increased, and that of si(nal)(n = 3-0) decreased with increasing fluorine ion content in the initial gel. the catalytic performance of the sapo-34 catalysts with various si coordination was investigated in the methanol-to-olefins reaction. the results showed that sapo-34 catalysts with rich si(4al) coordination structure had higher selectivity to ethylene and longer life time.
WOS标题词science & technology ; physical sciences ; technology
类目[WOS]chemistry, applied ; chemistry, physical ; engineering, chemical
研究领域[WOS]chemistry ; engineering
关键词[WOS]molecular-sieves ; silicon incorporation ; nmr ; fluoride ; crystallization ; zeolites ; template ; morpholine ; conversion ; ions
收录类别SCI
语种英语
WOS记录号WOS:000259341000011
公开日期2015-11-17
源URL[http://159.226.238.44/handle/321008/141082]  
专题大连化学物理研究所_中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Xu Lei,Du Aiping,Wei Yingxu,et al. Synthesis of SAPO-34 with rich Si(4Al) coordination environment in the framework and its catalytic performance in methanol-to-olefins reaction[J]. chinese journal of catalysis,2008,29(8):727-732.
APA Xu Lei.,Du Aiping.,Wei Yingxu.,Meng Shuanghe.,He Yanli.,...&Liu Zliongmin.(2008).Synthesis of SAPO-34 with rich Si(4Al) coordination environment in the framework and its catalytic performance in methanol-to-olefins reaction.chinese journal of catalysis,29(8),727-732.
MLA Xu Lei,et al."Synthesis of SAPO-34 with rich Si(4Al) coordination environment in the framework and its catalytic performance in methanol-to-olefins reaction".chinese journal of catalysis 29.8(2008):727-732.

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来源：大连化学物理研究所

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