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Issue 14, 2016
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Methane formation mechanism in the initial methanol-to-olefins process catalyzed by SAPO-34

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Abstract

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.

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

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Publication details

The article was received on 06 Mar 2016, accepted on 23 Mar 2016 and first published on 24 Mar 2016


Article type: Paper
DOI: 10.1039/C6CY00506C
Citation: Catal. Sci. Technol., 2016,6, 5526-5533
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    Methane formation mechanism in the initial methanol-to-olefins process catalyzed by SAPO-34

    Z. Wei, Y. Chen, J. Li, P. Wang, B. Jing, Y. He, M. Dong, H. Jiao, Z. Qin, J. Wang and W. Fan, Catal. Sci. Technol., 2016, 6, 5526
    DOI: 10.1039/C6CY00506C

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