Mn-Ce/AC催化剂低温NH3选择性催化还原NO的性能

Performance of Mn-Ce/AC Catalyst for Low Temperature Selective Catalytic Reduction of NO with NH<sub>3</sub>

作者：楚英豪(四川大学建筑与环境学院；国家烟气脱硫工程技术研究中心)；王天泽(四川大学建筑与环境学院)；姚远(四川省环境工程技术评估中心)；宋鹏(四川大学建筑与环境学院)；尹华强(四川大学建筑与环境学院；国家烟气脱硫工程技术研究中心)；郭家秀(四川大学建筑与环境学院；国家烟气脱硫工程技术研究中心)

Author：Chu Yinghao(College of Architecture and Environ.,Sichuan Univ.;National Eng.Technol.Research Center for Flue Gas Desulfurization,Sichuan Univ.)；Wang Tianze(College of Architecture and Environ.,Sichuan Univ.)；Yao Yuan(Environmental Eng. Technol. Evaluation Center of Sichuan Province)；Song Peng(College of Architecture and Environ.,Sichuan Univ.)；Yin Huaqiang(College of Architecture and Environ.,Sichuan Univ.;National Eng.Technol.Research Center for Flue Gas Desulfurization,Sichuan Univ.)；Guo Jiaxiu(College of Architecture and Environ.,Sichuan Univ.;National Eng.Technol.Research Center for Flue Gas Desulfurization,Sichuan Univ.)

收稿日期：2012-11-10 年卷（期）页码：2013,45(3):127-132

期刊名称：工程科学与技术

Journal Name：Advanced Engineering Sciences

关键字：低温脱硝;选择性催化还原;多孔炭;铈；锰

Key words：low temperature De-No_xcatalyst;selective catalytic reduction ;activated carbon;Ce;Mn

基金项目：四川省科技支撑计划资助项目（2012FZ0009）

中文摘要

采用浸渍法制备了一系列Mn-Ce/AC催化剂，以NH3为还原剂，通过程序升温反应考察其选择性催化还原NO的催化性能。结果表明，氨氮比和空速对Mn-Ce/AC催化剂的催化活性有一定的影响。n(NH3)∶n(NO)=1∶1，空速为2 000 h-1时活性最佳，在反应温度接近90 ℃时NO脱除率达到90%，在120~250 ℃温度范围内，能保持99%以上的高脱除率。Mn-Ce/AC催化剂抗水和抗硫性能良好，在相对较高的温度下，催化剂仍能保持高的脱硝性能；低浓度的SO2对催化剂脱硝性能影响不大，但当SO2浓度上升到1 500 μL/L时，NO的最高脱除率只有70%。

英文摘要

Mn-Ce/AC catalyst was prepared by impregnation method and tested for selective catalytic reduction (SCR) of NO with ammonia through temperature programmed reaction(TPR). Results indicted that both then(NH₃)/n(NO) ratio and space velocity have certain effect on the performance of Mn-Ce/AC catalyst. The NO conversion is up to 90% at 90 ℃ on Mn-Ce/AC whenn(NH₃)/n(NO) ratio is 1:1 and space velocity is 2 000 h^-1, and a higher conversion of 99% is obtained during the reaction temperature of 120~250 ℃. Mn-Ce/AC catalyst shows good H₂O resistance and SO₂resistance,which can keep high activity when water vapor existed at higher temperature.With the increase of the SO₂concentration to 1 500 μL/L, the NO conversion decreases significantly to 70%.

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论文摘要

Mn-Ce/AC催化剂低温NH3选择性催化还原NO的性能

Performance of Mn-Ce/AC Catalyst for Low Temperature Selective Catalytic Reduction of NO with NH<sub>3</sub>