Preparation of highly active MCM-41 supported Ni2P catalysts and its dibenzothiophene HDS performanc

doi:10.1016/j.cjche.2017.09.001

Chin.J.Chem.Eng. ›› 2018, Vol. 26 ›› Issue (3): 540-544.DOI: 10.1016/j.cjche.2017.09.001

• Catalysis, kinetics and reaction engineering • Previous Articles Next Articles

Preparation of highly active MCM-41 supported Ni₂P catalysts and its dibenzothiophene HDS performanc

Hua Song, Qi Yu, Yanguang Chen, Yuanyuan Wang, Ruixia Niu

College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing 163318, China

Received:2017-07-28 Revised:2017-09-06 Online:2018-04-18 Published:2018-03-28
Contact: Hua Song
Supported by:
Supported by the National Natural Science Foundation of China (21276048), the Project of Education Department of Heilongjiang Province, China (12541060) and the Graduate Innovation Project of Northeast Petroleum University, China (YJSCX2016-019NEPU).

Preparation of highly active MCM-41 supported Ni₂P catalysts and its dibenzothiophene HDS performanc

Hua Song, Qi Yu, Yanguang Chen, Yuanyuan Wang, Ruixia Niu

College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing 163318, China

通讯作者: Hua Song
基金资助:
Supported by the National Natural Science Foundation of China (21276048), the Project of Education Department of Heilongjiang Province, China (12541060) and the Graduate Innovation Project of Northeast Petroleum University, China (YJSCX2016-019NEPU).

Abstract

Abstract: Highly active MCM-41 supported nickel phosphide catalysts for hydrodesulfurization (HDS) were synthesized by two different phosphorus sources, in which the surface of Ni₂P catalysts were modified by air instead of being passivated by O₂/N₂ mixture. In addition, the catalysts need not be activated with flowing H₂ (30 ml·min^-1) at 500℃ for 2 h prior to reaction as traditional method. X-ray diffraction (XRD), X-ray photoelectro spectroscopy (XPS), N₂-adsorption specific surface area measurements and CO chemisorption were used to characterize the resulting catalysts. The effect of modification with air on the surface of the catalysts for HDS performance was investigated. Results showed that the surface modification with air can promote the formation of smaller Ni₂P particles and more active Ni sites on surface of catalysts. At 3.0 MPa and 613 K, the dibenzothiophene (DBT) conversion of the catalysts modified with air was 98.7%, which was 7.1% higher than that of catalyst passivated by O₂/N₂ mixture. The higher activities of Ni₂P(x)/M41-O catalysts can be attributed to the smaller Ni₂P particles sizes and the increased hydrogen dissociation activity due to the surface modification.

Key words: Ni₂P, Hydrodesulfurization, Passivation, Surface modification, Dibenzothiophene

摘要： Highly active MCM-41 supported nickel phosphide catalysts for hydrodesulfurization (HDS) were synthesized by two different phosphorus sources, in which the surface of Ni₂P catalysts were modified by air instead of being passivated by O₂/N₂ mixture. In addition, the catalysts need not be activated with flowing H₂ (30 ml·min^-1) at 500℃ for 2 h prior to reaction as traditional method. X-ray diffraction (XRD), X-ray photoelectro spectroscopy (XPS), N₂-adsorption specific surface area measurements and CO chemisorption were used to characterize the resulting catalysts. The effect of modification with air on the surface of the catalysts for HDS performance was investigated. Results showed that the surface modification with air can promote the formation of smaller Ni₂P particles and more active Ni sites on surface of catalysts. At 3.0 MPa and 613 K, the dibenzothiophene (DBT) conversion of the catalysts modified with air was 98.7%, which was 7.1% higher than that of catalyst passivated by O₂/N₂ mixture. The higher activities of Ni₂P(x)/M41-O catalysts can be attributed to the smaller Ni₂P particles sizes and the increased hydrogen dissociation activity due to the surface modification.

关键词: Ni₂P, Hydrodesulfurization, Passivation, Surface modification, Dibenzothiophene

Hua Song, Qi Yu, Yanguang Chen, Yuanyuan Wang, Ruixia Niu. Preparation of highly active MCM-41 supported Ni₂P catalysts and its dibenzothiophene HDS performanc[J]. Chin.J.Chem.Eng., 2018, 26(3): 540-544.

Hua Song, Qi Yu, Yanguang Chen, Yuanyuan Wang, Ruixia Niu. Preparation of highly active MCM-41 supported Ni₂P catalysts and its dibenzothiophene HDS performanc[J]. Chinese Journal of Chemical Engineering, 2018, 26(3): 540-544.

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Preparation of highly active MCM-41 supported Ni₂P catalysts and its dibenzothiophene HDS performanc

Preparation of highly active MCM-41 supported Ni₂P catalysts and its dibenzothiophene HDS performanc

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