Effect of silica promoter on the structure of CoMo/Al2O3-SiO2 catalysts

BU Yan; ZHAO Guo-li; WANG Shao-jun; LING Feng-xiang; ZHANG Cheng

Volume 44 Issue 4

Apr. 2016

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Article Navigation > Journal of Fuel Chemistry and Technology > 2016 > 44(4): 463-469

BU Yan, ZHAO Guo-li, WANG Shao-jun, LING Feng-xiang, ZHANG Cheng. Effect of silica promoter on the structure of CoMo/Al2O3-SiO2 catalysts[J]. Journal of Fuel Chemistry and Technology, 2016, 44(4): 463-469.

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BU Yan, ZHAO Guo-li, WANG Shao-jun, LING Feng-xiang, ZHANG Cheng. Effect of silica promoter on the structure of CoMo/Al₂O₃-SiO₂ catalysts[J]. Journal of Fuel Chemistry and Technology, 2016, 44(4): 463-469.

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Effect of silica promoter on the structure of CoMo/Al₂O₃-SiO₂ catalysts

Fushun Research Institute of Petroleum and Petrochemicals, SINOPEC, Fushun 113001, China

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Corresponding author: Tel： 024-56389320， E-mail： zhaoguoli.fshy@sinopec.com.
Received Date: 2015-08-20
Rev Recd Date: 2016-01-27

Available Online: 2021-01-23

Publish Date: 2016-04-30

Abstract

Abstract

The characterization of a series of CoMo/Al₂O₃-SiO₂ catalysts with different SiO₂ contents were studied using in-situ FT-IR, Raman, UV-Vis and H₂-TPR techniques. The results show that the increase of the silica component in CoMo/Al₂O₃-SiO₂ catalysts can promote the transformation of octahedral molybdenum species into tetrahedral molybdenum species, and the higher SiO₂ content can contribute to the transformation. Proper amount of silica component in the mixed supports can alter the interaction between the support and the active metals, resulting in higher hydrodesulfurization(HDS) activity of CoMo/Al₂O₃-SiO₂ catalysts.
- CoMo/Al₂O₃-SiO₂,
- in-situ FT-IR spectroscopy,
- CO adsorption,
- sulfidation

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References(26)

References

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