| Co-ZSM-5催化剂上烃类选择性催化还原NOx机理研究进展 |
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| 引用本文： | 张志慧 牛金海 刘世华. Co-ZSM-5催化剂上烃类选择性催化还原NOx机理研究进展[J]. 工业催化, 2006, 14(7): 52-56 |
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| 作者姓名： | 张志慧 牛金海 刘世华 |
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| 作者单位： | 1.大连铁路卫生学校，辽宁 大连 116001；2.大连理工大学分析化学实验室，辽宁 大连 116024；3.大连理工大学等离子体物理化学实验室，辽宁 大连 116024 |
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| 基金项目： | 国家科技攻关项目 , 中国科学院资助项目 |
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| 摘 要： | 烃类选择性催化还原氮氧化物可能是富氧条件下脱除汽车尾气中氮氧化物污染的有效途径。以Co-ZSM-5催化剂为例，综述了国内外有关Co-ZSM-5催化剂及其在富氧条件下烃类选择还原氮氧化物的机理研究，并将烃类选择还原氮氧化物的过程概括为以下三个步骤：(1) (NO)ad + (O2)ad (NOy)ad ( y ≥2 )；(2) (NOy)ad + (CxHy)ad …… (NCaObHc )ad；(3) (NCaObHc )ad + NO + O2 …… N2 + CO2 + CO + H2O。
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| 关 键 词： | 氮氧化物 选择性催化还原 Co-ZSM-5 表面中间物种 烃类分子 汽车尾气净化 |
| 文章编号： | 1008-1143（2006）07-0052-05 |
| 收稿时间： | 2006-01-24 |
| 修稿时间： | 2006-01-24 |
Studies on the mechanism for selective catalytic reduction of nitrogen oxides with hydrocarbons over Co-ZSM-5 catalyst |
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| ZHANG Zhi-hui, NIU Jin-hai, LIU Shi-hua. Studies on the mechanism for selective catalytic reduction of nitrogen oxides with hydrocarbons over Co-ZSM-5 catalyst[J]. Industrial Catalysis, 2006, 14(7): 52-56 |
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| Authors: | ZHANG Zhi-hui NIU Jin-hai LIU Shi-hua |
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| Affiliation: | 1. Dalian Railway Medical School, Dalian 116001, Liaoning,China;2. Laboratory of Analytic Chemistry, Dalian University of Technology; Dalian 116024, Laoning,China;3. Laboratory of Plasma Physical Chemistry, Dalian University of Technology, Dalian 116024, Liaoning,China |
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| Abstract: | Hydrocarbon selective catalytic reduction (HC-SCR) of NOx is potentially an effective way for NOx removal from automotive exhaust in the presence of excessive O2. Using Co-ZSM-5 as the model catalyst, advances in studies on the mechanism for HC-SCR of NOx were reviewed. The process can be summarized as the following three steps: (1) (NO)ad + (O2)ad (NOy)ad ( y ≥2 )；(2) (NOy)ad + (CxHy)ad …… (NCaObHc )ad；(3) (NCaObHc )ad + NO + O2 …… N2 + CO2 + CO + H2O. |
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| Keywords: | NOx removal selective catalytic reduction(SCR) Co-ZSM-5 surface intermediate species hydrocarbons automotive emission control |
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