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Palladium-bismuth intermetallic and surface-poisoned catalysts for the semi-hydrogenation of 2-methyl-3-butyn-2-ol

Johnston, Shaun K.; Cherkasov, Nikolay; Ibhadon, Alex O.; McCue, Alan J.; Anderson, James A.; Johnston, Shaun K.

Authors

Shaun K. Johnston

Nikolay Cherkasov

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Dr Alex Ibhadon A.O.Ibhadon@hull.ac.uk
Reader in Catalysis and Reactor Engineering

Alan J. McCue

James A. Anderson

Shaun K. Johnston



Abstract

The effects of poisoning of Pd catalysts with Bi and annealing in a polyol (ethylene glycol) were studied on the semi-hydrogenation of 2-methyl-3-butyn-2-ol (MBY). An increase in the Pd:Bi ratio from 7 to 1 in the Bi-poisoned catalysts decreased the hydrogenation activity due to blocking of active sites, but increased maximum alkene yield from 91.5% for the Pd catalyst to 94–96% for all Bi-poisoned Pd catalysts, by decreasing the adsorption energy of alkene molecules and suppressing the formation of β-hydride phase. Annealing of the catalysts induced the formation of intermetallic phases and decreased its activity due to sintering of the catalytic particles and low activity of intermetallic compounds. Langmuir–Hinshelwood kinetic modelling of the experimental data showed that poisoning of Pd with Bi changed the relative adsorption constants of organic species suggesting ligand effects at high Bi content.

Citation

Cherkasov, N., Ibhadon, A. O., McCue, A. J., Anderson, J. A., & Johnston, S. K. (2015). Palladium-bismuth intermetallic and surface-poisoned catalysts for the semi-hydrogenation of 2-methyl-3-butyn-2-ol. Applied catalysis. A, General, 497, 22-30. https://doi.org/10.1016/j.apcata.2015.02.038

Journal Article Type Article
Acceptance Date Feb 20, 2015
Online Publication Date Feb 27, 2015
Publication Date 2015-05
Deposit Date Apr 6, 2016
Publicly Available Date Apr 6, 2016
Journal Applied catalysis a : general
Print ISSN 0926-860X
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 497
Pages 22-30
DOI https://doi.org/10.1016/j.apcata.2015.02.038
Keywords Heterogeneous catalysis; Alkynol; 2-methyl-3-butyn-2-ol; Hydrogenation; Semi-hydrogenation; Palladium; Bismuth
Public URL https://hull-repository.worktribe.com/output/435076
Publisher URL http://www.sciencedirect.com/science/article/pii/S0926860X15001362
Additional Information This is an authors accepted manuscript of an article published in Applied catalysis a : general, 2015, v.497.

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2016-04-01 Ibhadon 2 SB.pdf (1.7 Mb)
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Publisher Licence URL
http://creativecommons.org/licenses/by-nc-nd/4.0/





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