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学科主题: 物理化学
题名: Coke Formation and Carbon Atom Economy of Methanol-to-Olefins Reaction
作者: Wei, Yingxu1;  Yuan, Cuiyu1;  Li, Jinzhe1;  Xu, Shutao1;  Zhou, You1, 2;  Chen, Jingrun1;  Wang, Quanyi1, 2;  Xu, Lei1;  Qi, Yue1;  Zhang, Qing1;  Liu, Zhongmin1
通讯作者: 刘中民
关键词: atom economy ;  carbon ;  heterogeneous catalysis ;  methanol ;  olefination
刊名: CHEMSUSCHEM
发表日期: 2012
DOI: 10.1002/cssc.201100528
卷: 5, 期:5, 页:906-912
收录类别: SCI
文章类型: Article
部门归属: DNL12
项目归属: 1201
产权排名: 1,1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: The methanol-to-olefins (MTO) process is becoming the most important non-petrochemical route for the production of light olefins from coal or natural gas. Maximizing the generation of the target products, ethene and propene, and minimizing the production of byproducts and coke, are major considerations in the efficient utilization of the carbon resource of methanol. In the present work, the heterogeneous catalytic conversion of methanol was evaluated by performing simultaneous measurements of the volatile products generated in the gas phase and the confined coke deposition in the catalyst phase. Real-time and complete reaction profiles were plotted to allow the comparison of carbon atom economy of methanol conversion over the catalyst SAPO-34 at varied reaction temperatures. The difference in carbon atom economy was closely related with the coke formation in the SAPO-34 catalyst. The confined coke compounds were determined. A new type of confined organics was found, and these accounted for the quick deactivation and low carbon atom economy under low-reaction-temperature conditions. Based on the carbon atom economy evaluation and coke species determination, optimized operating conditions for the MTO process are suggested; these conditions guarantee high conversion efficiency of methanol.
关键词[WOS]: LIGHT OLEFINS ;  MTO REACTION ;  CATALYTIC PERFORMANCE ;  HYDROCARBONS REACTION ;  ZEOLITE DEACTIVATION ;  H-SAPO-34 CATALYSTS ;  REACTION-MECHANISM ;  SHAPE-SELECTIVITY ;  ORGANIC-SYNTHESIS ;  MOLECULAR-SIEVES
语种: 英语
WOS记录号: WOS:000303854800013
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/117745
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, Natl Engn Lab Methanol To Olefins, Dalian Natl Lab Clean Energy, Dalian, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

Recommended Citation:
Wei, Yingxu,Yuan, Cuiyu,Li, Jinzhe,et al. Coke Formation and Carbon Atom Economy of Methanol-to-Olefins Reaction[J]. CHEMSUSCHEM,2012,5(5):906-912.
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