SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2018, Vol. 26 ›› Issue (3): 540-544.DOI: 10.1016/j.cjche.2017.09.001

• Catalysis, Kinetics and Reaction Engineering • 上一篇    下一篇

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

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

  1. College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing 163318, China
  • 收稿日期:2017-07-28 修回日期:2017-09-06 出版日期:2018-03-28 发布日期:2018-04-18
  • 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).

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

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

  1. College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing 163318, China
  • Received:2017-07-28 Revised:2017-09-06 Online:2018-03-28 Published:2018-04-18
  • 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).

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

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