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Experimental Evidence on the Formation of Ethene through Carbocations in Methanol Conversion over H-ZSM-5 Zeolite
Wang, Chao; Yi, Xianfeng; Xu, Jun; Qi, Guodong; Gao, Pan; Wang, Weiyu; Chu, Yueying; Wang, Qiang; Feng, Ningdong; Liu, Xiaolong; Zheng, Anmin; Deng, Feng
2015-08-17
Source PublicationCHEMISTRY-A EUROPEAN JOURNAL
Volume21Issue:34Pages:12061-12068
SubtypeArticle
AbstractThe methanol to olefins conversion over zeolite catalysts is a commercialized process to produce light olefins like ethene and propene but its mechanism is not well understood. We herein investigated the formation of ethene in the methanol to olefins reaction over the H-ZSM-5 zeolite. Three types of ethylcyclopentenyl carbocations, that is, the 1-methyl-3-ethylcyclopentenyl, the 1,4-dimethyl-3-ethylcyclopentenyl, and the 1,5-dimethyl-3-ethylcyclopentenyl cation were unambiguously identified under working conditions by both solid-state and liquid-state NMR spectroscopy as well as GC-MS analysis. These carbocations were found to be well correlated to ethene and lower methylbenzenes (xylene and trimethylbenzene). An aromatics-based paring route provides rationale for the transformation of lower methylbenzenes to ethene through ethylcyclopentenyl cations as the key hydrocarbon-pool intermediates.
KeywordCarbocations Olefins Reaction Mechanisms Solid-state Nmr Spectroscopy Zeolites
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1002/chem.201501355
WOS KeywordTO-OLEFIN CATALYSIS ; HYDROCARBON-POOL CHEMISTRY ; SOLID-STATE NMR ; H-BETA ; HEPTAMETHYLBENZENIUM CATION ; AROMATIC-HYDROCARBONS ; PRODUCT SELECTIVITY ; REACTION CENTERS ; CARBENIUM IONS ; MECHANISM
Indexed BySCI
Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000359299700020
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Document Type期刊论文
Identifierhttp://ir.apm.ac.cn/handle/112942/7847
Collection磁共振应用研究部
AffiliationChinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Natl Ctr Magnet Resonance Wuhan, Wuhan 430071, Peoples R China
Recommended Citation
GB/T 7714
Wang, Chao,Yi, Xianfeng,Xu, Jun,et al. Experimental Evidence on the Formation of Ethene through Carbocations in Methanol Conversion over H-ZSM-5 Zeolite[J]. CHEMISTRY-A EUROPEAN JOURNAL,2015,21(34):12061-12068.
APA Wang, Chao.,Yi, Xianfeng.,Xu, Jun.,Qi, Guodong.,Gao, Pan.,...&Deng, Feng.(2015).Experimental Evidence on the Formation of Ethene through Carbocations in Methanol Conversion over H-ZSM-5 Zeolite.CHEMISTRY-A EUROPEAN JOURNAL,21(34),12061-12068.
MLA Wang, Chao,et al."Experimental Evidence on the Formation of Ethene through Carbocations in Methanol Conversion over H-ZSM-5 Zeolite".CHEMISTRY-A EUROPEAN JOURNAL 21.34(2015):12061-12068.
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