Influence of Free Radicals on Catalytic Reduction of Sulfur Dioxide in the Presence of Oxygen over Sulfurized LaCoO

化学工业与工程

Chemcial Industry and Engineering

2007, Vol. 24

Issue (1) :8-10 DOI:

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Influence of Free Radicals on Catalytic Reduction of Sulfur Dioxide in the Presence of Oxygen over Sulfurized LaCoO_3

ZHAO Long,MA Zhi,QIN Yong-ning,QI Xiao-zhou (School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China)

(School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China

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Abstract The influence of free radicals on catalytic reduction of sulfur dioxide by carbon monoxide in the presence of oxygen over sulfurized LaCoO_3 was discussed.It is found that oxygen poisoning can be eliminated through the reaction with free radicals produced by pyrolysis of acetone,thus the activity of the catalyst can be well maintained.XRD and XPS were used to investigate the influence of free radicals on the catalyst's bulk phase and surface state.

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Received 2007-01-15; published 2007-01-15

Cite this article:

ZHAO Long,MA Zhi,QIN Yong-ning,QI Xiao-zhou .Influence of Free Radicals on Catalytic Reduction of Sulfur Dioxide in the Presence of Oxygen over Sulfurized LaCoO_3[J] Chemcial Industry and Engineering, 2007,V24(1): 8-10