Hawkins, A. P. , Zachariou, A., Collier, P., Howe, R. F., Lennon, D. and Parker, S. F. (2023) Inelastic neutron scattering studies of propene and 1-octene oligomerisation in HZSM-5. Johnson Matthey Technology Review, (doi: 10.1595/205651324X16964134291592) (Early Online Publication)
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Abstract
Neutron scattering methods (quasielastic neutron scattering (QENS) and inelastic neutron scattering (INS)) have been used to study the reactivity of propene and 1-octene over the acid zeolite catalyst H-ZSM 5. The high activity of the catalyst causes the alkenes to form linear oligomers below room temperature. INS has shown that the reaction proceeds through a hydrogen-bonded intermediate. Studies using propane as an inert analogue for propene have found that the adsorbed C3 molecules spend the majority of their time undergoing short jumps within the pore channels of the zeolite. Hydrothermal de-alumination plays an important role in determining the activity of zeolite catalysts. De-alumination was found to delay the onset of catalytic activity for oligomerization to higher temperatures and increase the mobility of hydrocarbons within the zeolite, both due to reduced acid-hydrocarbon interactions.
| Item Type: | Articles |
|---|---|
| Additional Information: | Johnson Matthey plc. is thanked for supplying the ZSM-5 zeolite and for financial support through the provision of industrial CASE studentships in partnership with the EPSRC (APH (EP/P510506/1, AZ (EP/N509176/1)). The resources and support provided by the UK Catalysis Hub via membership of the UK Catalysis Hub consortium and funded by EPSRC grants EP/R026815/1 and EP/R026939/1 are gratefully acknowledged. |
| Status: | Early Online Publication |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Lennon, Professor David and Zachariou, Miss Andrea and Hawkins, Alexander |
| Authors: | Hawkins, A. P., Zachariou, A., Collier, P., Howe, R. F., Lennon, D., and Parker, S. F. |
| College/School: | College of Science and Engineering > School of Chemistry |
| Journal Name: | Johnson Matthey Technology Review |
| Publisher: | Johnson Matthey |
| ISSN: | 2056-5135 |
| ISSN (Online): | 2056-5135 |
| Published Online: | 04 October 2023 |
| Copyright Holders: | Copyright © 2023 Johnson Matthey |
| First Published: | First published in Johnson Matthey Technology Review 2023 |
| Publisher Policy: | Reproduced under a Creative Commons license |
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