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非晶态CeO2@TiO2催化剂的结构、性质及其选择催化还原脱硝性能

刘俊 ,  王亮亮 ,  费兆阳 ,  陈献 ,  汤吉海 ,  崔咪芬 ,  乔旭

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引用本文: 刘俊, 王亮亮, 费兆阳, 陈献, 汤吉海, 崔咪芬, 乔旭. 非晶态CeO2@TiO2催化剂的结构、性质及其选择催化还原脱硝性能[J]. 燃料化学学报, 2016, 44(08): 954-960. shu
Citation:  LIU Jun, WANG Liang-liang, FEI Zhao-yang, CHEN Xian, TANG Ji-hai, CUI Mi-fen, QIAO Xu. Structure and properties of amorphous CeO2@TiO2 catalyst and its performance in the selective catalytic reduction of NO with NH3[J]. Journal of Fuel Chemistry and Technology, 2016, 44(08): 954-960. shu

非晶态CeO2@TiO2催化剂的结构、性质及其选择催化还原脱硝性能

  • 1.

    1. 南京工业大学 材料化学工程国家重点实验室, 江苏 南京 210009;

  • 2.

    2. 南京工业大学 化学化工学院, 江苏 南京 210009

    • 通讯作者: 费兆阳
  • 基金项目:

    国家自然科学基金（21306089) 

    国家科技支撑计划（2011BAE18B01) 

    江苏省创新基金（SJLX15-0347）资助 

摘要: 采用自发沉积法制备了非晶态CeO2@TiO2催化剂，通过XRD、Raman光谱、TEM、N2吸附、H2-TPR、NH3-TPD及FT-IR等手段表征了催化剂结构和表面性质，研究了CeO2@TiO2在选择催化还原脱NO反应中的催化性能。结果表明，非晶态CeO2@TiO2催化剂中Ce与Ti间存在很强的相互作用，能够在原子水平上相互结合，表现出与晶态结构截然不同的还原特性，具备更强的氧化还原能力。同时，与浸渍法制备的CeO2/TiO2相比，CeO2@TiO2还具有更大的比表面积和更强的表面酸性，因而具有更加优异的脱硝性能。在175℃下NO转化率即达到80%以上，在200-400℃脱硝率稳定在96.0%-99.4%；同时，H2O和SO2的阶跃应答实验表明，CeO2@TiO2具有很强的抗水和抗SO2毒化能力。

English

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  • 收稿日期:  2016-04-05
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