Effects of W content on the isomerization performance of solid super acid Pd-SO42-/ZrO2-WO3

SONG Hua; ZHANG Xu; LIANG Bao-xing

Volume 40 Issue 04

Apr. 2012

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Article Navigation > Journal of Fuel Chemistry and Technology > 2012 > (04): 487-493

SONG Hua, ZHANG Xu, LIANG Bao-xing. Effects of W content on the isomerization performance of solid super acid Pd-SO42-/ZrO2-WO3[J]. Journal of Fuel Chemistry and Technology, 2012, (04): 487-493.

Citation:

SONG Hua, ZHANG Xu, LIANG Bao-xing. Effects of W content on the isomerization performance of solid super acid Pd-SO₄^2-/ZrO₂-WO₃[J]. Journal of Fuel Chemistry and Technology, 2012, (04): 487-493.

SONG Hua, ZHANG Xu, LIANG Bao-xing. Effects of W content on the isomerization performance of solid super acid Pd-SO42-/ZrO2-WO3[J]. Journal of Fuel Chemistry and Technology, 2012, (04): 487-493.

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Effects of W content on the isomerization performance of solid super acid Pd-SO₄^2-/ZrO₂-WO₃

1.
College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing 163318, China;
2.
Heilongjiang Provincial Key Laboratory of Chemical Engineering of Oil and Gas, Northeast Petroleum University, Daqing 163318, China

Received Date: 2011-05-09
Rev Recd Date: 2011-07-28
Publish Date: 2012-04-30

Abstract

Abstract

The effects of W content on the performance of the Pd-SO₄^2-/ZrO₂-WO₃solid super acid catalyst was studied using n-pentane isomerization as a probe reaction and the catalysts were characterized by X-ray diffraction(XRD), FT-IR, H₂-TPR, specific surface area measurements(BET), thermogravimetry-differential thermal analysis(TG-DTA) and NH₃ temperature-programmed desorption(NH₃-TPD). The effects of WO₃ content on the acidity, surface area and crystal structure of catalyst were researched. The catalytic activity of the Pd-SO₄^2-/ZrO₂-WO₃solid super acid catalyst with a mass fraction of 13% WO₃ which was calcinated at 600℃ was found to be the best. At reaction temperature of 260℃,space velocity of 1.0h^-1,H₂/ n-pentane mol ration of 4.0 and reaction pressure of 2.0MPa, the iso-pentane yield was 40.1%. The iso-pentane yield was stabilized in about 38% and the selectivity is higher than 95.3％within 80h .
- solid super acid,
- catalyst,
- W,
- content,
- isomerization

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References(23)

References

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