Effect of impregnation sequence of Mo and Ni on the performance of Mo-Ni/Al<sub>2</sub>O<sub>3</sub> catalyst in thioetherification

SHEN Zhi-bing; KE Ming; ZHANG Jun-tao; LIANG Sheng-rong

Volume 45 Issue 5

May 2017

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SHEN Zhi-bing, KE Ming, ZHANG Jun-tao, LIANG Sheng-rong. Effect of impregnation sequence of Mo and Ni on the performance of Mo-Ni/Al2O3 catalyst in thioetherification[J]. Journal of Fuel Chemistry and Technology, 2017, 45(5): 616-623.

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SHEN Zhi-bing, KE Ming, ZHANG Jun-tao, LIANG Sheng-rong. Effect of impregnation sequence of Mo and Ni on the performance of Mo-Ni/Al₂O₃ catalyst in thioetherification[J]. Journal of Fuel Chemistry and Technology, 2017, 45(5): 616-623.

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Effect of impregnation sequence of Mo and Ni on the performance of Mo-Ni/Al₂O₃ catalyst in thioetherification

1.
School of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an 710065, China
2.
State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, China

Funds:

the National Natural Science Foundation of China 21276276

Received Date: 2016-12-12
Rev Recd Date: 2017-03-16

Available Online: 2021-01-23

Publish Date: 2017-05-10

Abstract

Abstract

Mo-Ni/Al₂O₃ catalysts were prepared by different impregnation sequences of Mo and Ni; the effect of impregnation sequence on the performance of Mo-Ni/Al₂O₃ catalysts in thioetherification was investigated. The results showed that the activity of the catalyst obtained by first impregnating Mo and then Ni (SI-mn) is close to that prepared by co-impregnation of Mo and Ni (MN); both are much more active than the catalyst obtained by first impregnating Ni and then Mo (SI-nm). For the SI-mn catalyst, Mo loaded on Al₂O₃ at the first stage can weaken the interaction between Ni and supporter, leading to a strong electronic effect between Ni and Mo, which can promote the formation of active phase in the presulfidation process and then enhance the catalytic performance of Mo-Ni/Al₂O₃ in thioetherification and selective hydrogenation of diene. Similar phenomena are observed for the MN catalyst obtained by co-impregnation, which also exhibits high activity in thioetherification.
- thioetherification,
- selective hydrogenation of diene,
- consecutive impregnation,
- co-impregnation,
- Mo-Ni/Al₂O₃ catalyst

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References(32)

References

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