Methane formation mechanism in the initial methanol-to-olefins process catalyzed by SAPO-34

Wei Zhihong; Chen Yan-Yan; Li JunfenWang PengfeiJing BuqinHe YueDong MeiJiao HaijunQin ZhangfengWang JianguoFan Weibin

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Methane formation mechanism in the initial methanol-to-olefins process catalyzed by SAPO-34

机译：甲烷在最初的形成机制由SAPO-34 methanol-to-olefins催化过程

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A clear understanding of the methane formation mechanism in the initial MTO process is beneficial for the illustration of the initial C-H bond activation mechanism and the first C-C bond formation route. Thus, attempts are made here to unravel the methane formation pathway in the initial MTO process by elaborately designing experiments. It is shown that methane is generated together with formaldehyde or methoxymethyl cation by attacking the C-H bond of methanol or dimethyl ether (DME) with surface methoxy species (SMS). The reaction of DME and SMS provides strong evidence for the occurrence of C-H bond cleavage and the "methoxymethyl cation mechanism" in the initial MTO process.

机译：清楚地了解甲烷的形成在最初的MTO工艺是机制最初的有益的范例碳氢键活化机制和第一个碳碳债券形成的路线。来解开的甲烷生成途径最初的MTO工艺精心设计实验。连同甲醛或生成methoxymethyl阳离子通过攻击的碳氢键甲醇或二甲醚(测距装置)和表面含甲氧基的物种(SMS)。短信为发生提供了强有力的证据碳氢键的乳沟和“methoxymethyl阳离子机制”在最初的MTO工艺。

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来源
《Catalysis science & technology》 |2016年第14期|5526-5533|共8页
作者
Wei Zhihong; Chen Yan-Yan; Li JunfenWang PengfeiJing BuqinHe YueDong MeiJiao HaijunQin ZhangfengWang JianguoFan Weibin;
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Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, 27 South Taoyuan Rd, Taiyuan 030001, Peoples R China;

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正文语种英语
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关键词
ILLUSTRATIONS; methane; Bond cleavageCationsFormaldehyde;

机译：插图;甲烷;债券cleavageCationsFormaldehyde;

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Methane formation mechanism in the initial methanol-to-olefins process catalyzed by SAPO-34

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