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题名: Highly selective methanol-to-olefin reaction on pyridine modified H-mordenite
作者: He, Ting1;  Hou, Guangjin1, 3;  Li, Jinjing1;  Liu, Xianchun1;  Xu, Shutao2;  Han, Xiuwen1;  Bao, Xinhe1
关键词: Catalysis ;  Mordenite ;  Pyridine ;  MTO ;  NMR
刊名: JOURNAL OF ENERGY CHEMISTRY
发表日期: 2017-05-01
DOI: 10.1016/j.jechem.2017.02.004
卷: 26, 页:354-358
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Energy & Fuels ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Energy & Fuels ;  Engineering
英文摘要: The effects of the acid site in main channels of MOR zeolites on their product selectivity and deactivation in the MTO (methanol to olefin) reactions were investigated. The catalytic analysis demonstrates that the pyridine modified MOR zeolite yielded high selectivity (> 65.3%) of C-2 = -C-4 =, although the conversion dropped from 100% to 54%. Furthermore, both the catalytic lifetime of MOR and the stability of yielding the lower olefins were increased from less than 30 min to more than 120 min after the modification with pyridine. H-1 MAS NMR on MOR and modified MOR shows that the acid sites in main channel do not benefit the productivity of lower olefins and catalysts' lifetime. It can be concluded from ex-situ C-13 CP MAS NMR that the deposit species during the MTO reaction depend on the pore sizes, and the formation of large alkyl aromatic species more likely occurs in the 12-ring main channels rather than the 8-ring side pocket. (C) 2017 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.
关键词[WOS]: REACTION-MECHANISM ;  HYDROCARBONS REACTION ;  PRODUCT SELECTIVITY ;  ZEOLITE CATALYSTS ;  CARBENIUM IONS ;  CONVERSION ;  SAPO-34 ;  MTO ;  CARBONYLATION ;  HETEROGENEITY
语种: 英语
WOS记录号: WOS:000404653700006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/152089
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China
2.Chinese Acad Sci, Natl Engn Lab Methanol Olefins, Dalian Natl Lab Clean Energy, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China
3.Univ Delaware, Dept Chem & Biochem, Newark, DE 19716 USA

Recommended Citation:
He, Ting,Hou, Guangjin,Li, Jinjing,et al. Highly selective methanol-to-olefin reaction on pyridine modified H-mordenite[J]. JOURNAL OF ENERGY CHEMISTRY,2017,26:354-358.
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