Citation: LIU Zhe-Nan, GENG Yun-Feng, SHI Quan, LI Han-Sheng, SHI Da-Xin, WU Qin, ZHAO Yun, FENG Cai-Hong, JIAO Qing-Ze. Adsorption Properties and Catalytic Activity of CoMoS_x/γ-Al₂O₃ Catalysts in Reduction Desulfurization[J]. Chinese Journal of Inorganic Chemistry, ;2019, 35(1): 34-42. doi: 10.11862/CJIC.2019.004 shu

Adsorption Properties and Catalytic Activity of CoMoS_x/γ-Al₂O₃ Catalysts in Reduction Desulfurization

LIU Zhe-Nan ¹ ,
GENG Yun-Feng ² ,
SHI Quan ¹ ,
LI Han-Sheng ^1,, ,
SHI Da-Xin ¹ ,
WU Qin ¹ ,
ZHAO Yun ¹ ,
FENG Cai-Hong ¹ ,
JIAO Qing-Ze ^1,3

1.
School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
2.
Beijing Peking University Pioneer Technology Co., Ltd, Beijing 100080, China
3.
School of Chemical Engineering and Materials Science, Beijing Institute of Technology, Zhuhai, Guangdong 519085, China

Corresponding author: LI Han-Sheng, hanshengli@bit.edu.cn
Received Date: 20 August 2018
Revised Date: 19 October 2018

Figures(10)

CoMoS_x/γ-Al₂O₃ catalyst was prepared by using an impregnation method combining with in-situ reduction method. In order to systematically obtain the structure of the CoMoS_x/γ-Al₂O₃ catalyst and study the adsorption-desorption performance and the surface reactions of CO and SO₂, the catalyst was characterized using X-ray diffraction (XRD), scanning electron microscope/energy dispersive spectrdmeter (SEM/EDS), X-ray photoelectron spectroscopy (XPS), temperature programmed desorption/programmed temperature reduction/temperature progra-mmed surface reaction-mass spectrometry (TPD/TPR/TPSR-MS). The catalytic performances of the CoMoS_x/γ-Al₂O₃ catalyst were tested in a packed-bed microreactor. The results show that the CoMoS_x/γ-Al₂O₃ catalyst was composed of γ-Al₂O₃ and highly dispersed Co-Mo-S. During the pre-vulcanization, no sulfides such as CoS₂ and Co₉S₈ were formed. CO was adsorbed on CoMoS_x instead of γ-Al₂O₃. SO₂ was weakly adsorbed on γ-Al₂O₃ but strongly adsorbed on CoMoS_x. COS was adsorbed on γ-Al₂O₃ with a small amount, but not adsorbed on CoMoS_x. Furthermore, SO₂ adsorbed on CoMoS_x was active and reacted with CO adsorbed on CoMoS_x, while SO₂ adsorbed on γ-Al₂O₃ did not react. Finally, the conversion of SO₂ and the selectivity of sulfur were obtained up to 100% at 400℃.
- reduction desulfurization,
- carbon monoxide,
- sulfur dioxide,
- cobalt,
- molybdenum,
- alumina,
- adsorption
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沈阳化工大学材料科学与工程学院沈阳 110142

Adsorption Properties and Catalytic Activity of CoMoSx/γ-Al2O3 Catalysts in Reduction Desulfurization

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Adsorption Properties and Catalytic Activity of CoMoS_x/γ-Al₂O₃ Catalysts in Reduction Desulfurization