Investigation of ZSM-5 catalysts for dimethylether conversion using inelastic neutron scattering

Andrea Zachariou, Alexander Hawkins, David Lennon, Stewart F. Parker, Suwardiyanto, Santhosh K. Matam, C. Richard A. Catlow, Paul Collier, Ali Hameed, James McGregor, Russell F. Howe* (Corresponding Author)

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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Abstract

We report the characterisation of zeolite ZSM-5 catalysts used in the conversion of dimethylether to hydrocarbons. Inelastic neutron scattering spectroscopy, supported by solid state NMR, shows that the more rapid deactivation occurring with dimethylether compared with methanol is associated with the formation of less methylated aromatic coke species and attributed to the lower levels of water present during dimethylether conversion. The ability of inelastic neutron scattering to probe a working catalyst with no sample preparation is demonstrated.

Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalApplied Catalysis A: General
Volume569
Early online date9 Oct 2018
DOIs
Publication statusPublished - 5 Jan 2019

Bibliographical note

The UK Catalysis Hub is thanked for resources, support and access to the Research Complex at Harwell which is provided via our membership of the UK Catalysis Hub Consortium and funded by EPSRC (grants EP/K014706/1, EP/K014668/1, EP/K014854/1, EP/K014714/1 and EP/M013219/1). The STFC Rutherford Appleton Laboratory is thanked for access to the neutron beam facilities. Johnson Matthey plc is thanked for studentship support via the EPSRC Industrial CASE scheme (AZ and AH), and the provision of the ZSM5 catalyst plus some characterisation information.

Keywords

  • Coke formation
  • Dimethylether
  • Inelastic neutron scattering
  • ZSM-5

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