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γ-Al2O3负载Mn基催化剂低温催化臭氧氧化NO

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唐云, 杨凤林, 刘冰. γ-Al2O3负载Mn基催化剂低温催化臭氧氧化NO[J]. 环境工程学报, 2018, 12(9): 2540-2547. doi: 10.12030/j.cjee.201803230
引用本文: 唐云, 杨凤林, 刘冰. γ-Al2O3负载Mn基催化剂低温催化臭氧氧化NO[J]. 环境工程学报, 2018, 12(9): 2540-2547. doi: 10.12030/j.cjee.201803230
shu
TANG Yun, YANG Fenglin, LIU Bing. Catalytic ozonation of NO by Mn-based catalysts using γ-Al2O3 as supporter at low temperature[J]. Chinese Journal of Environmental Engineering, 2018, 12(9): 2540-2547. doi: 10.12030/j.cjee.201803230
Citation: TANG Yun, YANG Fenglin, LIU Bing. Catalytic ozonation of NO by Mn-based catalysts using γ-Al2O3 as supporter at low temperature[J]. Chinese Journal of Environmental Engineering, 2018, 12(9): 2540-2547. doi: 10.12030/j.cjee.201803230
shu

γ-Al2O3负载Mn基催化剂低温催化臭氧氧化NO

  • 1.

    大连理工大学环境学院，工业生态与环境工程教育部重点实验室，大连 116024

  • 基金项目:

Catalytic ozonation of NO by Mn-based catalysts using γ-Al2O3 as supporter at low temperature

  • 1.

    Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China

  • Fund Project:

  • 摘要: 利用等体积浸渍法制备γ-Al2O3负载Mn基催化剂，考察了掺杂元素种类，掺杂元素与Mn元素摩尔比以及煅烧温度对NO低温（100 ℃）催化氧化活性的影响，并对催化剂在有SO2或H2O的烟气中的稳定性进行了探究。结果表明，掺杂元素为Ce，Ce/Mn=0.4，煅烧温度为500 ℃条件下制备的催化剂NO催化活性最佳，在NO体积浓度为500×10-6，臭氧浓度为20.9 mg·L-1，n(O3)/n(NO)=0.2，反应温度为100 ℃，模拟烟气总流量为1.0 L·min-1，模拟烟气相对湿度为4%的条件下，NO的转化率最高可达70%。此外，还对催化剂在不同条件下的稳定性和活性恢复情况进行了探究。实验最终实现了在低O3浓度条件下达到较高NO转化率的目的，为烟气脱硝提供了一种具有应用潜力的新技术。
    Abstract: A series of Mn-based catalysts using γ-Al2O3 as supporter was prepared by incipient wetness impregnation. The effects of doping metal elements, the molar ratio of Ce/Mn and calcination temperature were investigated under low temperature (100 ℃) in this research. Moreover, the stablility of catalyst was tested in the simulated gas containing SO2 or H2O. The results suggested that MnOx-CeOx/γ-Al2O3 with mass ratio of 0.4 and calcination temperature of 500 ℃ got the highest activity at about 70% under the condition where initial concentration of NO was 500×10-6, inlet ozone concentration was 20.9 mg·L-1, the molar ratio of O3 and NO was 0.2, reaction temperature was 100 ℃，the total gas flow was 1.0 L·min-1 and relative humidity was 4%. Moreover, the stability under different situations and reactivation of catalyst was explored as well. Finally the experiment achieved a high conversion rate of NO under a low concentration of O3, which could be a new promising technology for denitrogenation from flue gas.
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  • 刊出日期:  2018-09-20

γ-Al2O3负载Mn基催化剂低温催化臭氧氧化NO

  • 1. 大连理工大学环境学院，工业生态与环境工程教育部重点实验室，大连 116024
基金项目:

摘要: 利用等体积浸渍法制备γ-Al2O3负载Mn基催化剂，考察了掺杂元素种类，掺杂元素与Mn元素摩尔比以及煅烧温度对NO低温（100 ℃）催化氧化活性的影响，并对催化剂在有SO2或H2O的烟气中的稳定性进行了探究。结果表明，掺杂元素为Ce，Ce/Mn=0.4，煅烧温度为500 ℃条件下制备的催化剂NO催化活性最佳，在NO体积浓度为500×10-6，臭氧浓度为20.9 mg·L-1，n(O3)/n(NO)=0.2，反应温度为100 ℃，模拟烟气总流量为1.0 L·min-1，模拟烟气相对湿度为4%的条件下，NO的转化率最高可达70%。此外，还对催化剂在不同条件下的稳定性和活性恢复情况进行了探究。实验最终实现了在低O3浓度条件下达到较高NO转化率的目的，为烟气脱硝提供了一种具有应用潜力的新技术。

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