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›› 2010, Vol. 10 ›› Issue (1): 142-148.

• 材料工程专栏 • 上一篇    下一篇

CuSO4-CeO2/TS催化氧化NO及其抗H2O和SO2毒化性能

夏斌 童志权 黄妍 罗晶 罗河   

  1. 湘潭大学环境工程系 湘潭大学环境工程系
  • 收稿日期:2009-09-01 修回日期:2009-10-23 出版日期:2010-02-20 发布日期:2010-02-20
  • 通讯作者: 童志权

Catalytic Oxidation of NO over CuSO4-CeO2/TiO2-SiO2 Catalyst and Its Property against the Effcts of H2O and SO2

XIA Bin TONG Hua, HUANG Yan, LUO Jing, LUO He   

  1. Environmental Engineering Department of Xiangtan University Environmental Engineering Department of Xiangtan University
  • Received:2009-09-01 Revised:2009-10-23 Online:2010-02-20 Published:2010-02-20
  • Contact: TONG Hua,

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被引次数

18

摘要： 采用共沉淀法制备了载体TiO2-SiO2 (TS)，用浸渍法制备了催化剂CuSO4-CeO2/TS，考察了组分配比、焙烧温度等制备条件和反应温度、NO进口浓度、O2含量、空速等操作条件对其催化氧化NO活性的影响及其抗H2O和SO2毒化的能力，对载体和催化剂分别进行了分析. 结果表明，在最佳条件下制备的催化剂，在反应温度350℃、进口NO浓度500′10-6(j)及O2浓度8%(j)、空速10000 h-1条件下，NO转化率可达67.5%，能满足NOx高效吸收的要求. 但因NO催化氧化过程的反应温度和O2含量均较高，其抗SO2和H2O毒化能力低于NO催化还原过程.

关键词: 催化氧化, H2O, SO2, NO, TiO2-SiO2

Abstract: CuSO4-CeO2/TS catalyst impregnated on TiO2-SiO2 (TS) support was prepared by coprecipitation method. The effects of loading, calcination temperature, volume fractions of NO and O2, and space velocity on CuSO4-CeO2/TS catalytic oxidation of nitric oxide were studied, and the resistance to poisoning of H2O and SO2 was also investigated. The support and catalysts were characterized by BET, XRD and FT-IR analysis. The results showed that the optimum catalyst could obtain the oxidation rate (NO2/NOx) about 67.5%, when the volumetric fraction of NO was 500′10-6, O2 8% and space velocity 10000 h-1 at 350℃ of reaction temperature, which could meet the condition of the highest absorption efficiency of NOx. But because of the higher reaction temperature and O2 content in the NO catalytic oxidation, the resistance to poisoning of H2O and SO2 was worse than that used in selective catalytic reduction process.

Key words: catalytic oxidation, H2O, SO2, NO, TiO2-SiO2

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