| La-Co-Fe-Cu/HZSM-5在尾气碳颗粒燃烧中的催化性能 |
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| 引用本文： | 王虹,王军利,李翠清,宋永吉,迟姚玲. La-Co-Fe-Cu/HZSM-5在尾气碳颗粒燃烧中的催化性能[J]. 环境科学与技术, 2011, 34(6): 85-88. DOI: 10.3969/j.issn.1003-6504.2011.06.019 |
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| 作者姓名： | 王虹 王军利 李翠清 宋永吉 迟姚玲 |
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| 作者单位： | 1. 北京石油化工学院化工系,北京,102617
2. 湖南长岭石化科技开发有限公司,湖南长岭,414000 |
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| 基金项目： | 北京市教委科技计划项目资助(KM200910017002); 北京市属高等学校人才强教计划项目资助(PHR200907129) |
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| 摘 要： | 采用柠檬酸络合低温浸渍法制备分子筛负载钙钛矿型复合氧化物催化剂。采用XRD、SEM和H2-TPR等手段对催化剂性能进行表征,并在微型固定床反应器中对催化剂进行活性评价。结果表明,在钙钛矿型复合氧化物中进行B位离子掺杂,可以改善催化活性,碳颗粒燃烧温度降低。在20%LaCoO3/HZSM-5催化剂中用铁离子部分取代钴离子可以改善碳颗粒的燃烧性能,取代量增加碳颗粒燃烧温度降低,但是生成CO2的选择性也降低,以20%LaCo0.2Fe0.8O3/HZSM-5为催化剂,Tig、Tm和Tf分别为256℃、399℃和403℃,但生成CO2的选择性只有72.5%。在20%LaCo1-xFexO3/HZSM-5中的钙钛矿型复合氧化物B位离子中加入铜离子后,在碳颗粒燃烧反应中生成CO2的选择性得到明显改善,Sco2提高10个单位以上。以20%LaCo0.2Fe0.6Cu0.2O3/HZSM-5为催化剂,在碳颗粒燃烧反应中生成CO2的选择性可以达到94.7%,Tig、Tm和Tf分别为242℃、427℃和445℃。
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| 关 键 词： | 钙钛矿型复合氧化物 HZSM-5 碳颗粒 催化燃烧 |
Performance of La-Co-Fe-Cu/HZSM-5 Catalysts for Combustion of Soot from Diesel Exhaust |
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| WANG Hong,WANG Jun-li,LI Cui-qing,SONG Yong-ji,CHI Yao-ling. Performance of La-Co-Fe-Cu/HZSM-5 Catalysts for Combustion of Soot from Diesel Exhaust[J]. Environmental Science and Technology, 2011, 34(6): 85-88. DOI: 10.3969/j.issn.1003-6504.2011.06.019 |
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| Authors: | WANG Hong WANG Jun-li LI Cui-qing SONG Yong-ji CHI Yao-ling |
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| Affiliation: | WANG Hong1*,WANG Jun-li2,LI Cui-qing1*,SONG Yong-ji1,CHI Yao-ling1(1.Department of Chemical Engineering,Beijing Institute of Petrochemical Technology,Beijing 102617,China,2.Hunan Changling Petrochemical Science and Technology Developing Co.Ltd,Changling 414000,China) |
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| Abstract: | Catalysts of perovskite-type complex oxide loaded on HZSM-5 zeolite were synthesized.Catalysts were characterized by XRD,SEM and H2-TPR,and performance of catalysts for combusting soot was evaluated.Results showed that the catalytic performance was improved when Co of LaCoO3/HZSM-5 replaced partly by Fe.The more the number of Fe,the lower the combustion temperature of soot,but the selectivity of formed CO2 was becoming lower.When the soot combusted on the 20% LaCo0.2Fe0.8O3/HZSM-5 catalyst,Tig,Tm and Tf was... |
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| Keywords: | perovskite-type complex oxide HZSM-5 soot catalytic combustion |
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