Effect of preparation method and selective poisoning on the performance of platinum supported on tungstated zirconia catalysts for alkane isomerization

Gustavo Larsen; Lucía M. Petkovic

doi:10.1016/S0926-860X(96)00232-3

Effect of preparation method and selective poisoning on the performance of platinum supported on tungstated zirconia catalysts for alkane isomerization

Gustavo Larsen, Lucía M. Petkovic

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Abstract

The reactions of n-butane with hydrogen at 573 K were used as chemical probes to study the performance of platinum supported on tungstated zirconia (PtWZ) prepared by sequential impregnation of tungsten (W) and platinum (Pt) precursors. The effect of Pt and W loading and calcination and reduction temperatures on the n-butane isomerization activity and selectivity was determined. N-propylamine poisoning experiments show that the isomerization and homologation (C₃ + C₅) pathways are affected more dramatically than the hydrogenolysis routes because the former are exclusively acid-catalyzed reactions.

Original language	English (US)
Pages (from-to)	155-166
Number of pages	12
Journal	Applied Catalysis A: General
Volume	148
Issue number	1
DOIs	https://doi.org/10.1016/S0926-860X(96)00232-3
State	Published - Dec 17 1996

Keywords

Platinum
Propylamine poisoning
Tungstated zirconia
n-Butane isomerization

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology

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10.1016/S0926-860X(96)00232-3

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title = "Effect of preparation method and selective poisoning on the performance of platinum supported on tungstated zirconia catalysts for alkane isomerization",

abstract = "The reactions of n-butane with hydrogen at 573 K were used as chemical probes to study the performance of platinum supported on tungstated zirconia (PtWZ) prepared by sequential impregnation of tungsten (W) and platinum (Pt) precursors. The effect of Pt and W loading and calcination and reduction temperatures on the n-butane isomerization activity and selectivity was determined. N-propylamine poisoning experiments show that the isomerization and homologation (C3 + C5) pathways are affected more dramatically than the hydrogenolysis routes because the former are exclusively acid-catalyzed reactions.",

keywords = "Platinum, Propylamine poisoning, Tungstated zirconia, n-Butane isomerization",

author = "Gustavo Larsen and Petkovic, {Luc{\'i}a M.}",

note = "Funding Information: This researchw as supportedi n part by the NSF (CTS-9406718)a nd by the American Chemical Society (PetroleumR esearchF und, grant # 31067-AC5). Support from the ResearchC ouncil and the Layman Fund of the University of Nebraska is also acknowledgedO. ne of us (LMP) wishes to express her gratitudet o the University of San Juan for providing a graduatef ellowshipt o study at the University of Nebraska. We thank the refereesf or their valuable commentsb ut of course,w e are to be held responsiblefo r all thosed eficiencies that persist.",

year = "1996",

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doi = "10.1016/S0926-860X(96)00232-3",

language = "English (US)",

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pages = "155--166",

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T1 - Effect of preparation method and selective poisoning on the performance of platinum supported on tungstated zirconia catalysts for alkane isomerization

AU - Larsen, Gustavo

AU - Petkovic, Lucía M.

N1 - Funding Information: This researchw as supportedi n part by the NSF (CTS-9406718)a nd by the American Chemical Society (PetroleumR esearchF und, grant # 31067-AC5). Support from the ResearchC ouncil and the Layman Fund of the University of Nebraska is also acknowledgedO. ne of us (LMP) wishes to express her gratitudet o the University of San Juan for providing a graduatef ellowshipt o study at the University of Nebraska. We thank the refereesf or their valuable commentsb ut of course,w e are to be held responsiblefo r all thosed eficiencies that persist.

PY - 1996/12/17

Y1 - 1996/12/17

N2 - The reactions of n-butane with hydrogen at 573 K were used as chemical probes to study the performance of platinum supported on tungstated zirconia (PtWZ) prepared by sequential impregnation of tungsten (W) and platinum (Pt) precursors. The effect of Pt and W loading and calcination and reduction temperatures on the n-butane isomerization activity and selectivity was determined. N-propylamine poisoning experiments show that the isomerization and homologation (C3 + C5) pathways are affected more dramatically than the hydrogenolysis routes because the former are exclusively acid-catalyzed reactions.

AB - The reactions of n-butane with hydrogen at 573 K were used as chemical probes to study the performance of platinum supported on tungstated zirconia (PtWZ) prepared by sequential impregnation of tungsten (W) and platinum (Pt) precursors. The effect of Pt and W loading and calcination and reduction temperatures on the n-butane isomerization activity and selectivity was determined. N-propylamine poisoning experiments show that the isomerization and homologation (C3 + C5) pathways are affected more dramatically than the hydrogenolysis routes because the former are exclusively acid-catalyzed reactions.

KW - Platinum

KW - Propylamine poisoning

KW - Tungstated zirconia

KW - n-Butane isomerization

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U2 - 10.1016/S0926-860X(96)00232-3

DO - 10.1016/S0926-860X(96)00232-3

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SN - 0926-860X

VL - 148

SP - 155

EP - 166

JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

IS - 1

ER -

Effect of preparation method and selective poisoning on the performance of platinum supported on tungstated zirconia catalysts for alkane isomerization

Abstract

Keywords

ASJC Scopus subject areas

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