| LaCoO3钙钛矿型催化剂对柴油机NOx净化性能研究 |
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| 引用本文： | 郝斌,杨铁皂,吕刚,宋崇林,宾峰.LaCoO3钙钛矿型催化剂对柴油机NOx净化性能研究[J].小型内燃机与摩托车,2012,41(2):62-65. |
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| 作者姓名： | 郝斌 杨铁皂 吕刚 宋崇林 宾峰 |
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| 作者单位： | 1. 河南科技大学车辆与动力工程学院 河南洛阳471003
2. 天津大学内燃机燃烧学国家重点实验室 |
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| 基金项目： | 霍英东基金青年教师优选资助课题，天津市应用基础及前沿技术研究计划重点项目 |
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| 摘 要： | 采用柠檬酸络合法制备了LaCoO3钙钛矿型催化剂。对其理化特性及NH3-选择性催化还原催化性能的研究结果表明：纯LaCoO3颗粒具有一定的NOx催化还原能力,在250～450℃活性较高;但该催化剂对NH3具有较高的氧化活性,且催化活性随反应温度的升高而提高;在SCR反应中,在400℃以下时,该催化剂显示出一定的NOx净化能力,但当温度超过400℃以后,还原剂的加入反而恶化了NOx排放。不管反应气组成如何,LaCoO3钙钛矿型催化剂对HC和CO都具有良好的催化性能。
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| 关 键 词： | 钙钛矿 催化剂 选择性催化还原 柴油机 氮氧化物 |
Study on Selective Catalytic Reduction Reaction Properties of LaCoO3 Perovskite Catalyst for Diesel NOx Emission Removal |
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| Hao Bin
,
Yang Tiezao
,
Lv Gang
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Song Chonglin
,
Bin Feng.Study on Selective Catalytic Reduction Reaction Properties of LaCoO3 Perovskite Catalyst for Diesel NOx Emission Removal[J].Small Internal Combustion Engine and Motorcycle,2012,41(2):62-65. |
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| Authors: | Hao Bin Yang Tiezao Lv Gang Song Chonglin Bin Feng |
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| Affiliation: | 1-School of Vehicle & Motive Power Engineering,Henan University of Science and Technology (Luoyang,Henan,471003,China) 2-State Key Laboratory of Engines,Tianjin University |
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| Abstract: | LaCoO3 perovskite catalyst was prepared by citric acid complex method and characterized for its physic-chemical properties.Catalytic performance in the SCR of NOx by NH3 was studied and results showed that: pure LaCoO3 granule has a certain ability of catalytic reduction of NOx,especially between 250 to 450℃.However,the undesired catalytic activity for the oxidation of NH3 was too high and could be even largely promoted by a higher temperature.When LaCoO3 was used as SCR catalyst,it showed a certain degree of purification ability of NOx below 400℃,but if the temperature was higher than 400℃,NOx elimination is deteriorated.Moreover,LaCoO3 perovskite catalyst was highly capable of enhancing the oxidation of HC and CO regardless of their gas compositions. |
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| Keywords: | Perovskite Catalyst Selective Catalytic Reduction(SCR) Diesel engine Nitrogen Oxides(NOx) |
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