Changing the balance of the mto reaction dual-cycle mechanism: reactions over zsm-5 with varying contact times
文献类型：期刊论文
| 作者 | Zhang, Mozhi1,3; Xu, Shutao1; Wei, Yingxu1; Li, Jinzhe1; Wang, Jinbang1; Zhang, Wenna1,3; Gao, Shushu1,3; Liu, Zhongmin1,2 |
| 刊名 | Chinese journal of catalysis
 |
| 出版日期 | 2016-08-01 |
| 卷号 | 37期号:8页码:1413-1422 |
| 关键词 | Methanol to olefins Dual-cycle mechanism Zsm-5 Contact time Hydrogen transfer reaction |
| ISSN号 | 0253-9837 |
| DOI | 10.1016/s1872-2067(16)62466-x |
| 通讯作者 | Wei, yingxu(weiyx@dicp.ac.cn) ; Liu, zhongmin(liuzm@dicp.ac.cn) |
| 英文摘要 | The methanol to olefins (mto) reaction was performed over zsm-5 zeolite at 300 degrees c under various methanol weight hourly space velocity (whsv) values. during these trials, the catalytic perfor mance was assessed, in addition to the formation and function of organic compounds retained in the zeolite. analysis of reaction effluents and confined organics demonstrated a dual-cycle reaction mechanism when employing zsm-5. the extent of the hydrogen transfer reaction, a secondary reaction in the mto process, varied as the catalyst-methanol contact time was changed. in addition, c-12/c-13-methanol switch experiments indicated a relationship between the dual-cycle mechanism and the extent of the hydrogen transfer reaction. reactions employing a low methanol whsv in conjunction with a long contact time favored the hydrogen transfer reaction to give alkene products and promoted the generation and accumulation of retained organic species, such as aromatics and methylcyclopentadienes, which enhance the aromatic cycle. when using higher whsv values, the reduced contact times lessened the extent of the hydrogen transfer reaction and limited the generation of methylcyclopentadienes and aromatic species. this suppressed the aromatic cycle, such that the alkene cycle became the dominant route during the mto reaction. (c) 2016, dalian institute of chemical physics, chinese academy of sciences. published by elsevier b.v. all rights reserved. |
| WOS关键词 | SOLID-STATE NMR ; METHANOL-TO-HYDROCARBONS ; ZEOLITE H-ZSM-5 ; OLEFINS CONVERSION ; CARBENIUM IONS ; CATALYTIC PERFORMANCE ; DFT CALCULATIONS ; CO-REACTION ; SPECTROSCOPY ; SAPO-34 |
| WOS研究方向 | Chemistry ; Engineering |
| WOS类目 | Chemistry, Applied ; Chemistry, Physical ; Engineering, Chemical |
| 语种 | 英语 |
| WOS记录号 | WOS:000381326900028 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2375488 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Wei, Yingxu; Liu, Zhongmin |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Engn Lab Methanol Olefins, iChEM Collaborat Innovat Ctr Chem Energy Mat,Dali, Dalian 116023, Liaoning, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Mozhi,Xu, Shutao,Wei, Yingxu,et al. Changing the balance of the mto reaction dual-cycle mechanism: reactions over zsm-5 with varying contact times[J]. Chinese journal of catalysis,2016,37(8):1413-1422. |
| APA | Zhang, Mozhi.,Xu, Shutao.,Wei, Yingxu.,Li, Jinzhe.,Wang, Jinbang.,...&Liu, Zhongmin.(2016).Changing the balance of the mto reaction dual-cycle mechanism: reactions over zsm-5 with varying contact times.Chinese journal of catalysis,37(8),1413-1422. |
| MLA | Zhang, Mozhi,et al."Changing the balance of the mto reaction dual-cycle mechanism: reactions over zsm-5 with varying contact times".Chinese journal of catalysis 37.8(2016):1413-1422. |
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来源：中国科学院大学
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