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Cavity Controls the Selectivity: Insights of Confinement Effects on MTO Reaction
Li, Jinzhe1; Wei, Yingxu1; Chen, Jingrun1,3; Xu, Shutao1; Tian, Peng1; Yang, Xiaofeng2; Li, Bing1; Wang, Jinbang1,3; Liu, Zhongmin1,2
关键词Mto Cl Chemistry Shape Selectivity Confinement Effects Selectivity Control
刊名ACS CATALYSIS
2015-02-01
DOI10.1021/cs501669k
5期:2页:661-665
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]METHANOL-TO-HYDROCARBONS ; ACIDIC ZEOLITE CATALYSTS ; STATE NMR-SPECTROSCOPY ; REACTION-MECHANISM ; SHAPE-SELECTIVITY ; HEPTAMETHYLBENZENIUM CATION ; OLEFINS CONVERSION ; SAPO-34 CATALYST ; POOL CHEMISTRY ; CARBENIUM IONS
英文摘要Organic reaction intermediates confined in zeolite cavities are very important for product formation during methanol-to-olefins (MTO) conversion; however, direct evidence is still required to understand the particular function of these intermediates. Herein, for the first time, by careful selection of SAPO molecular sieves with different cavity size but identical 8MR pore openings, the reactivity and role of these intermediates played in olefin generation are verified by isotopic tracing method and theoretical calculations based on the observation of two types of carbenium intermediates, polyMB(+) and polyMCP(+), under the real MTO reaction conditions. It demonstrates that cavity size controls the molecular size and reactivity of these confined species, which results in different MTO activity and product selectivity.
语种英语
WOS记录号WOS:000349275300021
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/145970
专题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 Natl Lab Clean Energy, Natl Engn Lab Methanol Olefins, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
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Li, Jinzhe,Wei, Yingxu,Chen, Jingrun,et al. Cavity Controls the Selectivity: Insights of Confinement Effects on MTO Reaction[J]. ACS CATALYSIS,2015,5(2):661-665.
APA Li, Jinzhe.,Wei, Yingxu.,Chen, Jingrun.,Xu, Shutao.,Tian, Peng.,...&Liu, Zhongmin.(2015).Cavity Controls the Selectivity: Insights of Confinement Effects on MTO Reaction.ACS CATALYSIS,5(2),661-665.
MLA Li, Jinzhe,et al."Cavity Controls the Selectivity: Insights of Confinement Effects on MTO Reaction".ACS CATALYSIS 5.2(2015):661-665.
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