| 选择性催化还原NOx的反应机理研究 |
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| 引用本文： | 吕君英,龚凡,郭亚平.选择性催化还原NOx的反应机理研究[J].工业催化,2006,14(1):40-45. |
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| 作者姓名： | 吕君英 龚凡 郭亚平 |
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| 作者单位： | 1.哈尔滨工程大学化工学院,黑龙江 哈尔滨 150001; 2.哈尔滨工业大学材料科学与工程;学院,黑龙江 哈尔滨 150001 |
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| 摘 要： | 选择性催化还原法（SCR）脱除NOx具有较高的效率,是目前工业中应用最广泛的工艺。催化还原NOx的反应过程相当复杂。概括了H2、CO、烃类、NH3和尿素等作为还原剂选择性催化还原氮氧化物的各种反应机理,详细论述了催化还原过程中形成的中间体,如亚硝基甲烷、烯醇式物质CH2=O)、NO2［NH4+］2、NOy、CxHyOzN、CxHyOz、NO+、NCO或CtHxOyNz等,并讨论了催化剂和载体表面上的氧空缺和活性中心对SCR的影响，展望了这一领域的研究方向。
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| 关 键 词： | 氮氧化物 选择性催化还原 反应机理 |
| 文章编号： | 1008-1143（2006）01-0040-06 |
| 收稿时间： | 2005-08-11 |
| 修稿时间： | 2005年8月11日 |
Studies on the mechanism for selective catalytic reduction(SCR) of NOx |
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| L Jun-ying,GONG Fan,GUO Ya-ping.Studies on the mechanism for selective catalytic reduction(SCR) of NOx[J].Industrial Catalysis,2006,14(1):40-45. |
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| Authors: | L Jun-ying GONG Fan GUO Ya-ping |
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| Affiliation: | 1. School of Chemical Engineering, Harbin Engineering University, Harbin 150001;, China;;2. School of Materials Science and Engineering, Harbin Institute of Technology, ;Harbin 150001, China |
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| Abstract: | Due to complexity of the reaction process,there exist arguments among different researchers on the mechanism for selective catalytic reduction(SCR) of NOx.This paper reviewed the mechanisms for SCR using different reducing agents,such as H_2,CO,hydrocarbon,NH_3 and(NH_2)_2CO,including the intermediates formed during SCR,such as CH_3NO_2,()(CH_2)(CH)O(),(NO_2NH~ _4]_2),NO_y,C_xH_yO_zN,C_xH_yO_z, NO~ ,NCO and C_tH_xO_yN_z.Influence of oxygen vacancies and active sites on surface of the catalysts and supports on SCR results was discussed.Trends in this field were outlined,too. |
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| Keywords: | NOx removal selective catalystic reduction(SCR) mechanism |
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