高级搜索

γ-Al2O3负载Mn基催化剂低温催化臭氧氧化NO

,  , 

downloadPDF

上一篇

下一篇

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.
  • 加载中
  • [1] ZHAO Y, WEN X Y, GUO T X, et al.Desulfurization and denitrogenation from flue gas using Fenton reagent[J].Fuel Processing Technology, 2014, 128: 54-60 10.1016/j.fuproc.2014.07.006
    [2] KHAN N E, ADEWUYI Y G.Absorption and oxidation of nitric oxide (NO) by aqueous solution of sodium persulfate in a bubble column reactor[J].Industrial & Engineering Chemistry Research, 2010, 49: 8749-8760 10.1021/ie100607u
    [3] HUTSON N D, KRZYZYNSKA R, SRIVASTAVA R K.Simultaneous removal of SO2, NOx, and Hg from coal flue gas using a NaClO2-enhanced wet scrubber[J].Industrial & Engineering Chemistry Research, 2008, 47: 5825-5831 10.1021/ie800339p
    [4] ZHAO Y, GUO T X, CHEN Z Y, et al.Simultaneous removal of SO2 and NO using M/NaClO2 complex absorbent[J].Chemical Engineering Journal, 2010, 160: 42-47 10.1016/j.cej.2010.02.060
    [5] FANG P, CEN C P, WANG X M, et al.Simultaneous removal of SO2, NO and HgO by wet scrubbing using urea+KMnO4 solution[J].Fuel Processing Technology, 2013, 106: 645-653
    [6] ZHAO Y, HAO R L, ZHANG P, et al.Integrative process for simultaneous removal of SO2 and NO utilizing a vaporized H2O2/Na2S2O8[J].Energy & Fuels, 2014, 28: 6502-6510 10.1021/ef501686j
    [7] WANG Z H, LIN F W, JIANG S D, et al.Ceria substrate-oxide composites as catalyst for highly efficient catalytic oxidation of NO by O2[J].Fuel, 2016, 166: 352-360 10.1016/j.fuel.2015.11.012
    [8] LIN F W, WANG Z H, MA Q, et al.Catalytic deep oxidation of NO by ozone over MnOx loaded spherical alumina catalyst[J].Applied Catalysis B: Environmental, 2016, 198: 100-111 10.1016/j.apcatb.2016.05.058
    [9] LEE C L, LEE K T, ABDUL R M.Rice husk ash sorbent doped with copper for simultaneous removalof SO2 and NO: Optimization study[J].Journal of Hazardous Materials, 2010, 183: 738-745 10.1016/j.jhazmat.2010.07.088
    [10] LEE C L, LEE K T, ABDUL R M.Effect of operating conditions towards simultaneous removal of SO2 and NO using copper modified rice husk ash: Role as sorbent and catalyst[J].Journal of Environmental Chemical Engineering, 2013, 11: 755-761 10.1016/j.jece.2013.07.017
    [11] GAO X, JIANG Y, ZHONG Y, et al.The activity and characterization of CeO2-TiO2 catalysts prepared by the sol-gel method for selective catalytic reduction of NO with NH3[J].Journal of Hazardous Materials, 2010, 174: 734-739 10.1016/j.jhazmat.2009.09.112
    [12] ZHANG Y L, ZHOU N B, PENG C, et al.Enhanced activity and stability of copper oxide/γ-alumina catalyst in catalytic wet-air oxidation: Critical roles of cerium incorporation[J].Applied Surface Science, 2018, 436: 981-988 10.1016/j.apsusc.2017.12.036
    [13] 宋灿.不同晶形与形貌锰氧化物的合成及催化燃烧氯苯的研究[D].武汉：武汉工程大学，2012
    [14] AGOLU R, PERALA V, DAMMA D, et al.Structural characteristics and catalytic performance of nanostructured Mn-doped CeO2 solid solutions towards oxidation of benzylamine by molecular O2[J].Materials Research Bulletin, 2017, 88: 136-147 10.1016/j.materresbull.2016.12.028
    [15] LI X H, ZHANG S L, JIA Y, et al.Selective catalytic oxidation of NO with O2 over Ce-doped MnOx/TiO2 catalysts[J].Journal of Natural Gas Chemistry, 2012, 21: 17-24 10.1016/S1003-9953(11)60327-7
  • 加载中
WeChat 点击查看大图
计量
  • 文章访问数:  1928
  • HTML全文浏览数:  1771
  • PDF下载数:  131
  • 施引文献:  0
出版历程
  • 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。

English Abstract

参考文献 (15)

目录

/

返回文章
返回

Copyright © 2019 中国科学院生态环境研究中心