| 低温等离子体协同Ag/Al_2O_3选择性催化丙烯还原氮氧化物反应的原位红外光谱研究 | |
| 柯锐 ; 李俊华 ; 郝吉明 ; 傅立新 ; 陈强 ; 赵大庆 ; KE Rui ; LI Junhua ; HAO Jiming ; FU Lixin ; CHEN Qiang ; ZHAO Daqing | |
| 2010-06-08 ; 2010-06-08 | |
| 关键词 | 低温等离子体 氧化铝 选择性催化还原 稀燃 氮氧化物 原位漫反射傅里叶变换红外光谱 non-thermal plasma,silver,alumina,selective catalytic reduction,lean burn,nitrogen oxide,in situ diffuse reflectance infrared Fourier transform spectroscopy O643.3 |
| 其他题名 | In Situ DRIFTS Study on Non-thermal Plasma-Assisted NO_x Reduction by Propene over Ag/Al_2O_3 Catalyst |
| 中文摘要 | 研究了稀燃条件下低温等离子体(NTP)协同丙烯在Ag/Al2O3催化剂上选择性催化还原NOx反应,通过原位漫反射傅里叶变换红外光谱(DRIFTS)对NTP协同前后反应气中NO和C3H6的吸附以及丙烯选择性催化还原反应进行了表征.结果表明,丙烯的活化是Ag/Al2O3上选择性催化还原反应的关键步骤.NTP活化反应气体后,Ag/Al2O3表面-NCO、R-NO2和有机酸根等物种的数量大幅度增加,并且其催化还原NOx的低温(<350℃)活性也显著提高.在NTP协同前后,选择性催化还原过程可能存在两条反应路径,较低温度下主要是-NCO生成N2,而较高温度下则是-CN向N2转化.; The non-thermal plasma(NTP)-assisted selective catalytic reduction(SCR) of NO_x by propene over the Ag/Al_2O_3 catalyst was investigated.In situ diffuse reflectance infrared Fourier transform spectroscopy(DRIFTS) studies were carried out on the NO and C_3H_6 adsorption and SCR reactions over Ag/Al_2O_3 with or without NTP pretreatment.The results showed that the low-temperature activity of C_3H_6-SCR was remarkably enhanced with the assistance of NTP in the presence of excess oxygen.The activation of propene was the key step in C_3H_6-SCR over Ag/Al_2O_3.After the application of NTP,the amount of(NCO,) R-NO_2 and organic acid species over Ag/Al_2O_3 significantly increased,which caused a high catalytic activity at low temperatures((<350 ℃)).Two reaction paths were proposed in both SCR and NTP-SCR.At low reaction temperatures,(-NCO) was the key intermediate to generate N_2,while it was(-CN) at high reaction temperatures.; 国家高技术研究发展计划(863计划)项目(2004AA649150); 国家自然科学基金重点项目(20437010)资助 |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/48258]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 柯锐,李俊华,郝吉明,等. 低温等离子体协同Ag/Al_2O_3选择性催化丙烯还原氮氧化物反应的原位红外光谱研究[J],2010, 2010. |
| APA | 柯锐.,李俊华.,郝吉明.,傅立新.,陈强.,...&ZHAO Daqing.(2010).低温等离子体协同Ag/Al_2O_3选择性催化丙烯还原氮氧化物反应的原位红外光谱研究.. |
| MLA | 柯锐,et al."低温等离子体协同Ag/Al_2O_3选择性催化丙烯还原氮氧化物反应的原位红外光谱研究".(2010). |
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