预硫化的LaCoO_3催化剂结构与性能

摘要研究了钙钛矿LaCoO3和经过预硫化的LaCoO3的催化还原脱硫性能,发现预硫化的催化剂可显著降低起始反应温度和最高转化温度。经XRD分析表明催化剂为La2O2S、CoS2、La2(SO4)3和La2O3混合物相,并对催化剂的硫化过程的物相变化进行了分析。

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	秦新超
	马智
	何新炎

关键词：钙钛矿催化还原预硫化

Abstract： The catalytic activities of perovskite LaCoO_3 and that after pre-sulfurized in the reduction of SO_2 by CO were analyzed.It was found that the pre-sulfurized catalyst LaCoO_3 can observably decrease the starting reaction temperature and the complete conversion temperature.The sulfurization process of perovskite LaCoO_3 was discussed by XRD.The phase transformation of catalysts was investigated.The results showed that the catalysts were the mixture of La_2O_2S,CoS_2,La_2(SO_4)_3 and La_2O_3.

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Received 2008-09-15; published 2008-09-15

引用本文:

秦新超;马智;何新炎;.预硫化的LaCoO_3催化剂结构与性能[J]. 化学工业与工程, 2008,25(5): 386-388

QIN Xin-chao,MA Zhi,HE Xin-yan.Structure and Performance of Pre-Sulfurized Catalyst LaCoO_3[J]. Chemcial Industry and Engineering, 2008,25(5): 386-388