Catalytic activity of Al2O3/WO3/ZrO2 strong solid acid catalyst for n-butane isomerization

Xiaorong Chen; Changlin Chen; Nanping Xu; Chung Yuan Mou

Catalytic activity of Al₂O₃/WO₃/ZrO₂ strong solid acid catalyst for n-butane isomerization

Xiaorong Chen, Changlin Chen, Nanping Xu, Chung Yuan Mou

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

Abstract

A series of Al₂O₃/WO₃/ZrO₂ (AWZ) strong solid acid catalysts were prepared via precipitation, refluxing, impregnation, and calcination. The effects of Al₂O₃ on the structural, acidic, and redox features of WO₃/ZrO₂ (WZ) were studied. Al₂O₃ doping on tungstated zirconia made the zirconia tetragonal phase stable, prevented the growth of WO₃ particles and had less effect on the acid site strength. The n-butane isomerization was performed in a fixed-bed flow reactor. Compared with WZ, AWZ improved the isomerization conversion and the catalyst stability in the presence of hydrogen. The optimum Al loading in these catalysts was ∼ 0.5% and calcination temperature was 850°C . H₂ was essential for the satisfied performance of the catalysts. Pt/AWZ showed higher selectivity and stability than AWZ.

Original language	English
Pages (from-to)	924-928
Number of pages	5
Journal	Chinese Journal of Catalysis
Volume	24
Issue number	12
Publication status	Published - 2003
Externally published	Yes

Keywords

Alumina
Butane
Isomerization
Strong solid acid
Tungsten oxide
Zirconia

ASJC Scopus subject areas

Catalysis
General Chemistry

Cite this

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title = "Catalytic activity of Al2O3/WO3/ZrO2 strong solid acid catalyst for n-butane isomerization",

abstract = "A series of Al2O3/WO3/ZrO2 (AWZ) strong solid acid catalysts were prepared via precipitation, refluxing, impregnation, and calcination. The effects of Al2O3 on the structural, acidic, and redox features of WO3/ZrO2 (WZ) were studied. Al2O3 doping on tungstated zirconia made the zirconia tetragonal phase stable, prevented the growth of WO3 particles and had less effect on the acid site strength. The n-butane isomerization was performed in a fixed-bed flow reactor. Compared with WZ, AWZ improved the isomerization conversion and the catalyst stability in the presence of hydrogen. The optimum Al loading in these catalysts was ∼ 0.5% and calcination temperature was 850°C . H2 was essential for the satisfied performance of the catalysts. Pt/AWZ showed higher selectivity and stability than AWZ.",

keywords = "Alumina, Butane, Isomerization, Strong solid acid, Tungsten oxide, Zirconia",

author = "Xiaorong Chen and Changlin Chen and Nanping Xu and Mou, {Chung Yuan}",

year = "2003",

language = "English",

volume = "24",

pages = "924--928",

journal = "Chinese Journal of Catalysis",

issn = "1872-2067",

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TY - JOUR

T1 - Catalytic activity of Al2O3/WO3/ZrO2 strong solid acid catalyst for n-butane isomerization

AU - Chen, Xiaorong

AU - Chen, Changlin

AU - Xu, Nanping

AU - Mou, Chung Yuan

PY - 2003

Y1 - 2003

N2 - A series of Al2O3/WO3/ZrO2 (AWZ) strong solid acid catalysts were prepared via precipitation, refluxing, impregnation, and calcination. The effects of Al2O3 on the structural, acidic, and redox features of WO3/ZrO2 (WZ) were studied. Al2O3 doping on tungstated zirconia made the zirconia tetragonal phase stable, prevented the growth of WO3 particles and had less effect on the acid site strength. The n-butane isomerization was performed in a fixed-bed flow reactor. Compared with WZ, AWZ improved the isomerization conversion and the catalyst stability in the presence of hydrogen. The optimum Al loading in these catalysts was ∼ 0.5% and calcination temperature was 850°C . H2 was essential for the satisfied performance of the catalysts. Pt/AWZ showed higher selectivity and stability than AWZ.

AB - A series of Al2O3/WO3/ZrO2 (AWZ) strong solid acid catalysts were prepared via precipitation, refluxing, impregnation, and calcination. The effects of Al2O3 on the structural, acidic, and redox features of WO3/ZrO2 (WZ) were studied. Al2O3 doping on tungstated zirconia made the zirconia tetragonal phase stable, prevented the growth of WO3 particles and had less effect on the acid site strength. The n-butane isomerization was performed in a fixed-bed flow reactor. Compared with WZ, AWZ improved the isomerization conversion and the catalyst stability in the presence of hydrogen. The optimum Al loading in these catalysts was ∼ 0.5% and calcination temperature was 850°C . H2 was essential for the satisfied performance of the catalysts. Pt/AWZ showed higher selectivity and stability than AWZ.

KW - Alumina

KW - Butane

KW - Isomerization

KW - Strong solid acid

KW - Tungsten oxide

KW - Zirconia

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M3 - Article

AN - SCOPUS:33750504058

SN - 1872-2067

VL - 24

SP - 924

EP - 928

JO - Chinese Journal of Catalysis

JF - Chinese Journal of Catalysis

IS - 12

ER -

Catalytic activity of Al₂O₃/WO₃/ZrO₂ strong solid acid catalyst for n-butane isomerization

Abstract

Keywords

ASJC Scopus subject areas

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