Confined carbon mediating dehydroaromatization of Methane over Mo/ZSM-5

N. Kosinov, A.S.G. Wijpkema, E. Uslamin, R. Rohling, F.J.A.G. Coumans, B. Mezari, A. Parastaev, A.S. Poryvaev, M.V. Fedin, E.A. Pidko, E.J.M. Hensen

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Abstract

Non-oxidative dehydroaromatization of methane (MDA) is a promising catalytic process for direct valorization of natural gas to liquid hydrocarbons. The application of this reaction in practical technology is hindered by a lack of understanding about the mechanism and nature of the active sites in benchmark zeolite-based Mo/ZSM-5 catalysts, which precludes the solution of problems such as rapid catalyst deactivation. By applying spectroscopy and microscopy, it is shown that the active centers in Mo/ZSM-5 are partially reduced single-atom Mo sites stabilized by the zeolite framework. By combining a pulse reaction technique with isotope labeling of methane, MDA is shown to be governed by a hydrocarbon pool mechanism in which benzene is derived from secondary reactions of confined polyaromatic carbon species with the initial products of methane activation.

Original languageEnglish
Pages (from-to)1016-1020
Number of pages5
JournalAngewandte Chemie - International Edition
Volume57
Issue number4
DOIs
Publication statusPublished - 22 Jan 2018

Fingerprint

Methane
Zeolites
Carbon
Hydrocarbons
Catalyst deactivation
Benzene
Isotopes
Labeling
Natural gas
Microscopic examination
Chemical activation
Spectroscopy
Atoms
Catalysts
Liquids

Keywords

  • dehydroaromatization
  • hydrocarbons
  • methane
  • Mo/ZSM-5
  • organocatalysis

Cite this

Kosinov, N. ; Wijpkema, A.S.G. ; Uslamin, E. ; Rohling, R. ; Coumans, F.J.A.G. ; Mezari, B. ; Parastaev, A. ; Poryvaev, A.S. ; Fedin, M.V. ; Pidko, E.A. ; Hensen, E.J.M. / Confined carbon mediating dehydroaromatization of Methane over Mo/ZSM-5. In: Angewandte Chemie - International Edition. 2018 ; Vol. 57, No. 4. pp. 1016-1020.
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Confined carbon mediating dehydroaromatization of Methane over Mo/ZSM-5. / Kosinov, N.; Wijpkema, A.S.G.; Uslamin, E.; Rohling, R.; Coumans, F.J.A.G.; Mezari, B.; Parastaev, A.; Poryvaev, A.S.; Fedin, M.V.; Pidko, E.A.; Hensen, E.J.M.

In: Angewandte Chemie - International Edition, Vol. 57, No. 4, 22.01.2018, p. 1016-1020.

Research output: Contribution to journalArticleAcademicpeer-review

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AU - Coumans, F.J.A.G.

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AU - Parastaev, A.

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