Citation: WANG Guang-jian, BING Lian-cheng, GUO Na-na, YANG Zhi-jian, ZHANG Jian-kang. Preparation of activated carbon-supported Co-Mo bimetallic catalyst by impregnation-precipitation method[J]. Journal of Fuel Chemistry and Technology, ;2012, 40(10): 1252-1257. shu

Preparation of activated carbon-supported Co-Mo bimetallic catalyst by impregnation-precipitation method

1.
Qingdao University of Science and Technology, Qingdao 266042, China

Corresponding author: WANG Guang-jian,
Received Date: 24 February 2012
Available Online: 15 May 2012
Fund Project: 国家自然科学基金(20776070, 21076110)。 (20776070, 21076110)

Supported Co-Mo catalyst was prepared by impregnation-precipitation method using modified activated carbon as carrier and urea as precipitant.Catalytic activity of catalyst was studied by using the reduction of SO₂ by CO.Under optimum reaction conditions (sulfidation temperature 500℃; GHSV=7 000 mL·g^-1·h^-1;CO/SO₂ mol ratio =2:1; reaction temperature 450℃), the best catalytic activity and selectivity were obtained for Co-Mo catalyst with calcination temperature was 500℃ and Co/Mo mol ratio =0.45. Catalyst samples were characterized by X-ray powder diffraction (XRD) in order to relate the phase composition to the activation behavior and catalytic performance.The active phases of catalyst were detected as CoS₂ and MoS₂,and the formation of them were greatly dependent on the sulfidation temperature.And the catalytic activity of cobalt molybdenum catalyst decreased less than 1% after the reaction lasted for 24 h.
- activated carbon,
- Co/Mo catalyst,
- impregnation-precipitation method,
- carbon monoxide,
- sulfur dioxide
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