| 稀燃汽车尾气中氮氧化物的催化消除技术 |
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| 引用本文： | 潘广宏,孟明.稀燃汽车尾气中氮氧化物的催化消除技术[J].化学工业与工程,2011,28(3):67-73. |
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| 作者姓名： | 潘广宏 孟明 |
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| 作者单位： | 天津大学化工学院,天津市应用催化科学与工程重点实验室,天津,300072 |
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| 摘 要： | 稀薄燃烧(简称稀燃)技术能够使燃料在发动机内充分燃烧,既提高了燃油的经济性,同时又减少了温室气体CO2的排放,因而是一项节能减排的重要技术.但在稀燃条件下氧气大量过剩,加剧了三效催化剂对还原剂的催化氧化,降低了还原剂对NOx催化还原的效率.目前,国际上对稀燃气氛下NOx的消除主要采用NO直接分解、选择性催化还原(SCR...
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| 关 键 词： | 稀燃技术 NO直接分解 选择性催化还原 NOx储存还原 |
Technology for the Catalytic Removal of Nitrogen Oxides in the Lean-Burn Exhaust of Vehicles |
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| PAN Guang-hong,MENG Ming.Technology for the Catalytic Removal of Nitrogen Oxides in the Lean-Burn Exhaust of Vehicles[J].Chemical Industry and Engineering,2011,28(3):67-73. |
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| Authors: | PAN Guang-hong MENG Ming |
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| Affiliation: | PAN Guang-hong,MENG Ming(Tianjin Key Laboratory of Applied Catalysis Science and Engineering,School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China) |
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| Abstract: | Lean-burn technology can not only improve fuel economic efficiency but also reduce CO2 emission.However,in lean-burn exhaust,there exists excess oxygen,which accelerates the catalytic oxidation of reductants,and therefore decreasing efficiency of NOx reduction over the conventional three-way catalysts.At present,there are mainly three kinds of catalytic technology for lean-burn NOx removal,namely NO direct decomposition,selective catalytic reduction(SCR) and NOx storage and reduction(NSR).In this paper,the ... |
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| Keywords: | lean-burn technology NO direct decomposition selective catalytic reduction NOx storage and reduction |
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