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Citation: YU Xin-lei, PAN Wei-tong, GAO Rui, GAO De-zhi, LIU Xia, DAI Zheng-hua, YU Guang-suo, WANG Fu-chen. Selective oxidation of H2S over the LaCoO3 catalyst[J]. Journal of Fuel Chemistry and Technology, ;2019, 47(8): 973-979. shu

Selective oxidation of H2S over the LaCoO3 catalyst

  • Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China

  • Corresponding author: WANG Fu-chen, wfch@ecust.edu.cn
  • Received Date: 25 April 2019
    Revised Date: 24 June 2019

    Fund Project: The project was supported by the National Natural Science Foundation of China(21776086)the National Natural Science Foundation of China 21776086

Figures(8)

  • A series of LaCoO3 catalysts were prepared by sol-gel method and characterized by XRD, BET and XPS; the effect of calcination temperature and content of surfactant PEG-6000 and PEG-20000 on the catalytic activity of LaCoO3 in the selective oxidation of H2S to sulfur was investigated. The results illustrated that adding surfactant PEG-6000 and PEG-20000 can significantly improve the catalytic activity of LaCoO3 in H2S oxidation; the LaCoO3 catalyst prepared by adding 0.30 g PEG-20000 in the solution of 0.02 mol La(NO3)3 + 0.02 mol Co(NO3)2 and calcination at 650 ℃ exhibits the highest activity in H2S oxidation. Over this catalyst and under the optimum reaction temperature of 260 ℃, the conversion of H2S reaches 96.10%, with a selectivity of 93.77% to sulfur.
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