| 不同金属负载对Cr/Al2O3-TiO2催化剂结构及氧化NO性能的影响 |
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| 引用本文： | 魏炜,牟一蒙,梁红,李树华,乔智威,彭峰.不同金属负载对Cr/Al2O3-TiO2催化剂结构及氧化NO性能的影响[J].无机化学学报,2019,35(6):978-986. |
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| 作者姓名： | 魏炜 牟一蒙 梁红 李树华 乔智威 彭峰 |
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| 作者单位： | 广州大学化学化工学院能源与催化研究所 |
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| 基金项目： | 国家自然科学基金（No.21576058），广东省自然科学基金（No.2018A030313516）和广东省发展专项资金（No.201804010449）资助项目。 |
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| 摘 要： | 采用溶胶-凝胶法和浸渍法制备Cr/Al_2O_3-TiO_2催化剂,在考察不同Cr负载量的基础上,研究不同金属负载与焙烧温度对Cr/Al_2O_3-TiO_2催化剂结构与性能影响。程序升温氧化(TPO)结果表明,当Cr负载量为10%(w/w)时具有较好的催化活性;不同金属负载Cr/Al_2O_3-TiO_2时,负载Co及在焙烧温度为550℃时催化剂具有较好的活性。通过程序升温还原(H_2-TPR)表征发现,Co的负载使催化剂的低温氧化还原能力逐渐提高,表明Co-Cr具有较好的协同催化作用。X射线光电子能谱(XPS)表征表明,Co增加了Cr~(6+)和表面吸附氧(O_β)含量,随着焙烧温度的升高(450～550℃),晶格氧不断向催化剂表面流动,表面化学吸附氧O_β比例逐渐增加,导致催化活性不断升高,说明Cr~(6+)和O_β是催化氧化NO的重要活性物种。
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| 关 键 词： | 负载 Co-Cr/Al2O3-TiO2 焙烧温度 催化氧化 NO |
| 收稿时间： | 2018/12/17 0:00:00 |
| 修稿时间： | 2019/3/14 0:00:00 |
Effect of Different Metal Loading on the Structures and Catalytic Oxidation NO Performance of Cr/Al2O3-TiO2 Catalysts |
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| WEI Wei,MOU Yi-Meng,LIANG Hong,LI Shu-Hu,QIAO Zhi-Wei and PENG Feng.Effect of Different Metal Loading on the Structures and Catalytic Oxidation NO Performance of Cr/Al2O3-TiO2 Catalysts[J].Chinese Journal of Inorganic Chemistry,2019,35(6):978-986. |
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| Authors: | WEI Wei MOU Yi-Meng LIANG Hong LI Shu-Hu QIAO Zhi-Wei and PENG Feng |
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| Institution: | Guangzhou Key Laboratory for New Energy and Green Catalysis, College of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China,Guangzhou Key Laboratory for New Energy and Green Catalysis, College of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China,Guangzhou Key Laboratory for New Energy and Green Catalysis, College of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China,Guangzhou Key Laboratory for New Energy and Green Catalysis, College of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China,Guangzhou Key Laboratory for New Energy and Green Catalysis, College of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China and Guangzhou Key Laboratory for New Energy and Green Catalysis, College of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China |
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| Abstract: | |
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| Keywords: | loading Co-Cr/Al2O3-TiO2 calcination temperature catalytic oxidation NO |
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