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Issue 12, 2017
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Direct structural identification of carbenium ions and investigation of host–guest interaction in the methanol to olefins reaction obtained by multinuclear NMR correlations

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Abstract

Probing and determining the intermediates formed during catalytic reactions in heterogeneous catalysis are strong challenges. Using 13C labelling and two dimensional 13C–13C through-bond NMR correlations, we directly reveal the structures of a range of carbenium ion species formed during the conversion of methanol to olefins on acidic H-ZSM-5 zeolite by mapping the carbon–carbon bond connectivities. Additionally, we use 13C–27Al and 29Si–13C through-space NMR experiments to probe the interactions between the confined carbon species (including carbenium ions) and the framework of the zeolite, which quantitatively provide an estimate for the carbon–aluminium and carbon–silicon distances, respectively.

Graphical abstract: Direct structural identification of carbenium ions and investigation of host–guest interaction in the methanol to olefins reaction obtained by multinuclear NMR correlations

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Publication details

The article was received on 21 Aug 2017, accepted on 07 Oct 2017 and first published on 10 Oct 2017


Article type: Edge Article
DOI: 10.1039/C7SC03657D
Citation: Chem. Sci., 2017,8, 8309-8314
  • Open access: Creative Commons BY license
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    Direct structural identification of carbenium ions and investigation of host–guest interaction in the methanol to olefins reaction obtained by multinuclear NMR correlations

    D. Xiao, S. Xu, X. Han, X. Bao, Z. Liu and F. Blanc, Chem. Sci., 2017, 8, 8309
    DOI: 10.1039/C7SC03657D

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