Jump to main content
Jump to site search


Relevance of the Mo-precursor state in H-ZSM-5 for methane dehydroaromatization

Author affiliations

Abstract

Although the local geometry of Mo in Mo/HZSM-5 has been characterized before, we present a systematic way to manipulate the configuration of Mo and link it to its catalytic properties. The location and geometry of cationic Mo-complexes, the precursor of the active metal site for methane dehydroaromatization, are altered by directing the way they anchor to the framework of the zeolite. The feature used to direct the anchoring of Mo is the location of Al in the zeolite framework. According to DFT calculations, the local geometry of Mo should change, while UV-vis and pyridine FTIR spectroscopy indicated differences in the dispersion of Mo. Both aspects, however, did not influence the catalytic behavior of Mo/HZSM-5, indicating that as long as enough isolated Mo species are present inside the pores of the zeolite, the catalytic behavior is unaffected. This paves the way to better understand how the Mo oxo precursor transforms into the active phase under the reaction conditions.

Graphical abstract: Relevance of the Mo-precursor state in H-ZSM-5 for methane dehydroaromatization

Back to tab navigation

Supplementary files

Publication details

The article was received on 30 Aug 2017, accepted on 03 Jan 2018 and first published on 04 Jan 2018


Article type: Paper
DOI: 10.1039/C7CY01789H
Citation: Catal. Sci. Technol., 2018, Advance Article
  •   Request permissions

    Relevance of the Mo-precursor state in H-ZSM-5 for methane dehydroaromatization

    I. Vollmer, G. Li, I. Yarulina, N. Kosinov, E. J. Hensen, K. Houben, D. Mance, M. Baldus, J. Gascon and F. Kapteijn, Catal. Sci. Technol., 2018, Advance Article , DOI: 10.1039/C7CY01789H

Search articles by author

Spotlight

Advertisements