Preparation of Ag-Mn/γ-Al2O3-TiO2 catalysts by complexation-impregnation process with citric acid and its application in propane catalytic combustion

CHENG Li-jun; LIU Zhao; YUAN Shan-liang; HU Xin; ZHANG Biao; JIANG Yi

Volume 47 Issue 11

Nov. 2019

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Article Navigation > Journal of Fuel Chemistry and Technology > 2019 > 47(11): 1379-1385

CHENG Li-jun, LIU Zhao, YUAN Shan-liang, HU Xin, ZHANG Biao, JIANG Yi. Preparation of Ag-Mn/γ-Al2O3-TiO2 catalysts by complexation-impregnation process with citric acid and its application in propane catalytic combustion[J]. Journal of Fuel Chemistry and Technology, 2019, 47(11): 1379-1385.

Citation:

CHENG Li-jun, LIU Zhao, YUAN Shan-liang, HU Xin, ZHANG Biao, JIANG Yi. Preparation of Ag-Mn/γ-Al₂O₃-TiO₂ catalysts by complexation-impregnation process with citric acid and its application in propane catalytic combustion[J]. Journal of Fuel Chemistry and Technology, 2019, 47(11): 1379-1385.

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Preparation of Ag-Mn/γ-Al₂O₃-TiO₂ catalysts by complexation-impregnation process with citric acid and its application in propane catalytic combustion

CHENG Li-jun^{1, 2},
LIU Zhao^{1, 2},
YUAN Shan-liang¹,
HU Xin^{1, 2},
ZHANG Biao¹,
JIANG Yi^{1
,
,}

1.
Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China

Funds:

Sichuan Science and Technology Program 2018GZ0314

More Information

Corresponding author: JIANG Yi, Tel:028-85229457, E-mail:yjiang@cioc.ac.cn
Received Date: 2019-09-17
Rev Recd Date: 2019-09-29

Available Online: 2021-01-23

Publish Date: 2019-11-10

Abstract

Abstract

A series of Ag-Mn/γ-Al₂O₃-TiO₂ catalysts were prepared by different impregnation procedures. The catalysts were characterized by BET, XRD, TEM, XPS and H₂-TPR, and the catalytic properties were investigated by propane catalytic combustion. Results show that compared with the conventional impregnation method, complexation-impregnation procedure with citric acid promotes the dispersion of Ag and Mn particles on the surface of catalyst and strengthens the interaction between Ag and Mn, so as to increase the relative content of reactive oxygen species and improve the reducibility of catalysts, which further improves the catalytic activity of propane combustion reaction. Especially, the Ag₁Mn₃/γ-Al₂O₃-TiO₂ catalyst prepared by complexation-impregnation process with citric acid exhibits the best activity for propane catalytic combustion with 90% conversion at 263℃.
- complexation-impregnation,
- Ag-Mn catalysts,
- propane,
- catalytic combustion,
- interaction

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References(27)

References

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