Effect of H2S/H2 sulfuration temperature on performance of MoP/SiO2 catalyst for thioetherification

WAND Li-wen; LI Feng-xu; LI Ming-feng; CHU Yang; CHEN Ji-xiang

Volume 47 Issue 5

May 2019

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Article Navigation > Journal of Fuel Chemistry and Technology > 2019 > 47(5): 621-628

WAND Li-wen, LI Feng-xu, LI Ming-feng, CHU Yang, CHEN Ji-xiang. Effect of H2S/H2 sulfuration temperature on performance of MoP/SiO2 catalyst for thioetherification[J]. Journal of Fuel Chemistry and Technology, 2019, 47(5): 621-628.

Citation:

WAND Li-wen, LI Feng-xu, LI Ming-feng, CHU Yang, CHEN Ji-xiang. Effect of H₂S/H₂ sulfuration temperature on performance of MoP/SiO₂ catalyst for thioetherification[J]. Journal of Fuel Chemistry and Technology, 2019, 47(5): 621-628.

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Effect of H₂S/H₂ sulfuration temperature on performance of MoP/SiO₂ catalyst for thioetherification

1.
Department of Catalysis Science and Engineering, Tianjin Key Laboratory of Applied Catalysis Science and Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
2.
Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China

Funds:

The project was supported by the State Key Laboratory of Catalytic Materials and Reaction Engineering RIPP, SINOPEC

Received Date: 2018-10-17
Rev Recd Date: 2019-03-23

Available Online: 2021-01-23

Publish Date: 2019-05-10

Abstract

Abstract

The MoP/SiO₂ catalyst was prepared from the supported Mo phosphate by the H₂-TPR method and treated with 3%H₂S/H₂ at different temperatures. The as-prepared catalysts were characterized by means of XRD, HRTEM-EDX, XPS, NH₃-TPD, ICP-AES and CO chemisorption and tested for the thioetherification of isoprene and n-butylmercaptan. The effects of sulfuration temperature on the MoP/SiO₂ catalyst structure and thioetherification performance were investigated. The results showed that the MoP phase was still stable even at the sulfuration temperature of 400 ℃. As the sulfuration temperature increased, the acid amount of the catalysts increased while the surface metal site density decreased. As a result, in the thioetherification of isoprene and n-butylmercaptan, the C-S bond hydrogenolysis and the over-hydrogenation of isoprene were suppressed on the sulfurized catalysts, while the olefin polymerization was promoted. Relatively, the MoP/SiO₂ catalyst sulfurized at 120 ℃ had better performance for the thioetherification and the selective hydrogenation of isoprene.
- molybdenum phosphide,
- sulfuration temperature,
- thioetherification,
- selective hydrogenation

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References(26)

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