| 稀土氧化物上COS还原SO_2脱硫反应及机理 |
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| 引用本文： | 陈爱平,马建新,王幸宜,汪仁.稀土氧化物上COS还原SO_2脱硫反应及机理[J].燃料化学学报,1998(4). |
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| 作者姓名： | 陈爱平 马建新 王幸宜 汪仁 |
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| 作者单位： | 华东理工大学技术化学物理研究所 |
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| 摘 要： | 设计了两级干法脱硫系统，在第一级脱硫器中用ＣＯ还原烟道气中的ＳＯ２，在第二级脱硫器中，让在第一级脱硫器中产生的副产物ＣＯＳ与未完全脱除的ＳＯ２进一步进行二级脱硫反应。考察了稀土氧化物对ＣＯＳ还原ＳＯ２脱硫反应的催化活性，发现氧化铈具有最高的脱硫活性，并且具有较大的反应物配比适用范围。对氧化铈催化ＣＯＳ还原ＳＯ２反应提出了ｒｅｄｏｘ还原氧化机理。
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| 关 键 词： | 稀土氧化物，SO_2，COS，脱硫，反应机理 |
DESULFURIZATION REACTION AND MECHANISM OF REDUCTION OF SO_2 WITH COS ON RARE EARTH OXIDES |
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| Chen Aiping,Ma Jianxin,Wang Xingyi,Wang Ren.DESULFURIZATION REACTION AND MECHANISM OF REDUCTION OF SO_2 WITH COS ON RARE EARTH OXIDES[J].Journal of Fuel Chemistry and Technology,1998(4). |
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| Authors: | Chen Aiping Ma Jianxin Wang Xingyi Wang Ren |
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| Institution: | 1Institute of Technical Chemistry and Physics 2Institute of Catalysis East China University of Science and Technology Shanghai |
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| Abstract: | The system of twostage dry desulfurization process was designed In the first stage, SO 2 was reduced by CO In the second stage, SO 2 unreacted and COS produced as a byproduct in the first stage were reacted further The catalytic activities of rare earth oxides for the reduction of SO 2 with COS were investigated Ceria showed the highest desulfurization activity A redox reaction mechanism was proposed for the reduction of SO 2 with COS on ceria, which was preliminaryly verified by COS pulse reaction, characterization of Ce valence during the reaction and analysis of the effect of prereduction of ceria on its activity and inducing period |
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| Keywords: | rare earth oxide ceria SO 2 COS desulfurization reaction mechanism |
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