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化学工业与工程 2007, Vol. 24 Issue (1) :8-10    DOI:
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自由基对LaCoO_3催化剂还原脱硫性能的影响
赵龙;马智;秦永宁;齐晓周;
天津大学化工学院,天津大学化工学院,天津大学化工学院,天津大学化工学院 天津300072,天津300072,天津300072,天津300072
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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摘要 进行了自由基对钙钛矿型LaCoO3催化剂在含氧气氛下还原脱硫性能影响的研究。考察的自由基为热裂解丙酮产生,发现自由基可以有效地抑制混和气中的氧气对LaCoO3催化剂的毒化作用,保护了其在含氧气氛下催化还原脱硫的活性。对催化剂进行XRD及XPS分析,考察了自由基对催化剂物相结构和表面状态的影响。
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赵龙
马智
秦永宁
齐晓周
关键词： 自由基   烟气脱硫     
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
引用本文:   
赵龙;马智;秦永宁;齐晓周;.自由基对LaCoO_3催化剂还原脱硫性能的影响[J].  化学工业与工程, 2007,24(1): 8-10
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, 2007,24(1): 8-10
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