On the dynamic nature of Mo sites for methane dehydroaromatization

Freek Kapteijn, Ina Vollmer, Bart Van der Linden, Samy Ould-Chikh, Irina Yarulina, Alma I. Olivos Suarez, Jorge Gascon

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

Abstract

The mechanism of methane activation on Mo/HZSM-5 is poorly described, despite the great interest in methane dehyd roa romatization (MDA) to replace oil refineries for producing aromatics. It is difficult to assess the exact nature of the active site due to fast coking. By pre-carburizing Mo/HZSM-5 with carbon monoxide, the active site for MDA can be isolated and studied without the formation of coke. This strategy helped us examine how methane is activated on the catalytic site by carrying out MDA using isotopically labelled methane (1 3 C H 4 ) . We show that carbon originating from the preformed carbide is incorporated into the main products of the reaction, ethylene and benzene, demonstrating the dynamic nature of these active sites.

Original languageEnglish
Title of host publication12th Natural Gas Conversion Symposium 2019
EditorsReinhard Schomaecker
PublisherAIChE
Pages269-272
ISBN (Electronic)9781510888883
Publication statusPublished - 2019
Event12th Natural Gas Conversion Symposium 2019 - San Antonio, United States
Duration: 2 Jun 20196 Jun 2019

Conference

Conference12th Natural Gas Conversion Symposium 2019
CountryUnited States
CitySan Antonio
Period2/06/196/06/19

Keywords

  • Labelling experiments
  • Methane dehydroaromatization
  • Mo/HZSM-5
  • Molybdenum carbide

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    Kapteijn, F., Vollmer, I., Van der Linden, B., Ould-Chikh, S., Yarulina, I., Olivos Suarez, A. I., & Gascon, J. (2019). On the dynamic nature of Mo sites for methane dehydroaromatization. In R. Schomaecker (Ed.), 12th Natural Gas Conversion Symposium 2019 (pp. 269-272). AIChE.