Influence of aluminum species on the isomerization performance over solid superacid Pt-S28O2-/ZrO2-Al2O3

SONG Hua; ZHAO Le-le; SONG Hua-lin; LI Feng

Volume 43 Issue 10

Oct. 2015

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SONG Hua, ZHAO Le-le, SONG Hua-lin, LI Feng. Influence of aluminum species on the isomerization performance over solid superacid Pt-S28O2-/ZrO2-Al2O3[J]. Journal of Fuel Chemistry and Technology, 2015, 43(10): 1239-1244.

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SONG Hua, ZHAO Le-le, SONG Hua-lin, LI Feng. Influence of aluminum species on the isomerization performance over solid superacid Pt-S₂₈O^2-/ZrO₂-Al₂O₃[J]. Journal of Fuel Chemistry and Technology, 2015, 43(10): 1239-1244.

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Influence of aluminum species on the isomerization performance over solid superacid Pt-S₂₈O^2-/ZrO₂-Al₂O₃

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;
3.
Key Laboratory of Cancer Prevention and Treatment of Heilongjiang Province, Mudanjiang Medical University, Mudanjiang 157011, China

Funds: The project was supported by the Science and Technology Innovation Risk Research Project of Petro China Company Limited(07-06D-01-04-03-02).

Received Date: 2015-05-05
Rev Recd Date: 2015-07-01
Publish Date: 2015-10-31

Abstract

Abstract

A series of Pt-S₂₈O^2-/ZrO₂-Al₂O₃ catalysts were prepared by microemulsion method with pseudo-boehmite, γ-Al₂O₃, Al₂O₃ and Al(NO₃)₃·9H₂O as aluminum source, respectively, and the resulting catalysts were characterized by XRD, FT-IR, BET, H₂-TPR techniques. The influence of aluminum sources on the structure and acidic properties of the catalysts were investigated. The catalytic performance of the Pt-S₂₈O^2-/ZrO₂-Al₂O₃ catalysts was studied using n-petane isomerization as a probe reaction. The results indicated that all the catalysts prepared with different source of aluminum can stabilize the tetrogonal ZrO₂ phase and increase specific surface area of the catalysts. Except for pseudo-boehmite, the redox performance of catalysts prepared with other aluminum source were improved. The catalyst prepared with Al(NO₃)₃·9H₂O as the aluminum source, which possessed the largest specific surface area and more superacid, exhibited the best isomerization performance. At a reaction temperature of 220 ℃, a pressure of 2.0 MPa, a hydrogen/hydrocarbon mol ratio of 4∶1 and a WHSV of 1.0 h^-1, the isopentane yield reaches a maximum of 59.5%.
- solid superacid,
- catalyst,
- S₂₈O^2-/ZrO₂,
- isomerization,
- aluminum source

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References(19)

References

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