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

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

doi:10.1016/j.apcata.2015.02.038

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

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

^*Corresponding author for this work

University of Hull

Research output: Contribution to journal › Article › peer-review

47 Citations (Scopus)

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.

Original language	English
Pages (from-to)	22-30
Number of pages	9
Journal	Applied Catalysis A: General
Volume	497
Early online date	27 Feb 2015
DOIs	https://doi.org/10.1016/j.apcata.2015.02.038
Publication status	Published - 1 May 2015

Bibliographical note

Authors are grateful to Dr. C. Wiles, Professor P. Fletcher and Professor B. Binks for the access to their equipment and to the EU for an FP7 Grant for the MAPSYN Project (MAPSYN.eu No. CP-IP 309376).

Keywords

2-Methyl-3-butyn-2-ol
Alkynol
Bismuth
Heterogeneous catalysis
Hydrogenation
Palladium
Semi-hydrogenation

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

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.",

keywords = "2-Methyl-3-butyn-2-ol, Alkynol, Bismuth, Heterogeneous catalysis, Hydrogenation, Palladium, Semi-hydrogenation",

author = "Nikolay Cherkasov and Ibhadon, {Alex O.} and McCue, {Alan J.} and Anderson, {James A.} and Johnston, {Shaun K.}",

note = "Authors are grateful to Dr. C. Wiles, Professor P. Fletcher and Professor B. Binks for the access to their equipment and to the EU for an FP7 Grant for the MAPSYN Project (MAPSYN.eu No. CP-IP 309376).",

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AU - Cherkasov, Nikolay

AU - Ibhadon, Alex O.

AU - McCue, Alan J.

AU - Anderson, James A.

AU - Johnston, Shaun K.

N1 - Authors are grateful to Dr. C. Wiles, Professor P. Fletcher and Professor B. Binks for the access to their equipment and to the EU for an FP7 Grant for the MAPSYN Project (MAPSYN.eu No. CP-IP 309376).

PY - 2015/5/1

Y1 - 2015/5/1

N2 - 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.

AB - 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.

KW - 2-Methyl-3-butyn-2-ol

KW - Alkynol

KW - Bismuth

KW - Heterogeneous catalysis

KW - Hydrogenation

KW - Palladium

KW - Semi-hydrogenation

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DO - 10.1016/j.apcata.2015.02.038

M3 - Article

AN - SCOPUS:84937975381

SN - 0926-860X

VL - 497

SP - 22

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JO - Applied Catalysis A: General

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ER -

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

Abstract

Bibliographical note

Keywords

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