Investigation of the dynamics of 1-octene adsorption at 293 K in a ZSM-5 catalyst by inelastic and quasielastic neutron scattering

Hawkins, A. P. , O'Malley, A., Zachariou, A., Collier, P., Ewings, R. A., Silverwood, I. P., Howe, R. F., Parker, S. F. and Lennon, D. (2018) Investigation of the dynamics of 1-octene adsorption at 293 K in a ZSM-5 catalyst by inelastic and quasielastic neutron scattering. Journal of Physical Chemistry C, 123(1), pp. 417-425. (doi: 10.1021/acs.jpcc.8b08420)

Abstract

The properties of 1-octene adsorbed in zeolite ZSM-5 at 293 K are studied by means of inelastic and quasielastic neutron scattering (INS and QENS) in order to investigate interactions relevant to the zeolite solid acid catalysis of fluidised catalytic cracking reactions. The INS spectrum is compared to that recorded for the solid alkene and reveals significant changes of bonding on adsorption at ambient temperatures; the changes are attributed to the oligomerization of the adsorbed 1-octene to form a medium chain n-alkane or n-alkane cation. QENS analysis shows that these oligomers are immobilised within the zeolite pore structure but a temperature-dependant fraction is able to rotate around their long axis within the pore channels.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Zachariou, Miss Andrea and Silverwood, Dr Ian and Lennon, Professor David and Hawkins, Alexander
• Authors: Hawkins, A. P., O'Malley, A., Zachariou, A., Collier, P., Ewings, R. A., Silverwood, I. P., Howe, R. F., Parker, S. F., and Lennon, D.
• College/School: College of Science and Engineering > School of Chemistry
• Journal Name: Journal of Physical Chemistry C
• Publisher: American Chemical Society
• ISSN: 1932-7447
• ISSN (Online): 1932-7455
• Published Online: 13 December 2018
• Copyright Holders: Copyright © 2018 American Chemical Society
• First Published: First published in Journal of Physical Chemistry C 123(1):417-425
• Publisher Policy: Reproduced in accordance with the publisher copyright policy

Project Code	Award No	Project Name	Principal Investigator	Funder's Name	Funder Ref	Lead Dept
65418	1	Catalytic HDO (UK Catalysis hub)	Samuel Jackson	Engineering and Physical Sciences Research Council (EPSRC)	EP/K014706/1	CHEM - CHEMISTRY
65289	1	Towards closing the chlorine cycle in large-scale chemical manufacturing processes (UK Catalysis hub)	David Lennon	Engineering and Physical Sciences Research Council (EPSRC)	EP/K014854/1	CHEM - CHEMISTRY