Citation: WU Meng-de, LI Guang-ci, LI Ming-shi, LI Xue-bing, ZHUANG Qing-fa, CHEN Song. Effect of nickel cobalt co-catalyst on catalytic activity of molybdenum naphthenate for the hydroprocessing of coal tar pitch in suspension bed[J]. Journal of Fuel Chemistry and Technology, ;2021, 49(1): 27-36. doi: 10.1016/S1872-5813(21)60002-6 shu

Effect of nickel cobalt co-catalyst on catalytic activity of molybdenum naphthenate for the hydroprocessing of coal tar pitch in suspension bed

1.
School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
2.
Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China

Corresponding author: LI Ming-shi, mingshili@cczu.edu.cn
Received Date: 15 September 2020
Revised Date: 17 October 2020

Fund Project: The project was supported by National Natural Science Foundation of China (21761132006), Open Fund of State Key Laboratory of Heavy Oil (2018-02), Scientific Research and Innovation Fund of Qingdao Institute of Energy, and Clean Energy Innovation Institute of Chinese Academy of Sciences (QIBEBT l201933).

Figures(5)

Five dispersed molybdenum, nickel and cobalt oil soluble homogeneous catalysts were synthesized. The hydrogenation of coal tar pitch was under the conditions of 370 °C, 10 MPa hydrogen pressure, and 4 h reaction time in an autoclave reactor. The effects of molybdenum naphthenate addition, molybdenum nickel and molybdenum cobalt bimetallic ratios on hydrogenation were investigated. The catalytic hydrogenation effect was evaluated by the liquid yield. A variety of analytical methods, such as elemental analysis, ICP-MS, TEM, XPS, and four component separation, were used to explore the optimal catalytic system for the slurry bed hydrogenation of coal tar pitch. The results show that the optimal catalytic system is molybdenum naphthenate and nickel naphthenate ratio of 1∶1 at catalyst amount of 2×10³. Under optimal conditions, the liquid yield is 85.3%, the residue yield is 10.6%, and the gas yield is 4.1%.
- coal tar pitch,
- hydro-upgrading,
- homogeneous catalyst,
- slurry bed hydrocracking
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