| 含CeO2催化剂用于柴油车尾气炭烟氧化的研究 |
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| 引用本文： | 陈瑜,叶代启,梁红,付名利. 含CeO2催化剂用于柴油车尾气炭烟氧化的研究[J]. 工业催化, 2008, 16(8): 65 |
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| 作者姓名： | 陈瑜 叶代启 梁红 付名利 |
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| 作者单位： | 1.华南理工大学环境科学与工程学院，广东 广州510006；2.广州大学化学化工学院，广东 广州510006 |
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| 基金项目： | 广东省社会发展科技项目，广州市属高校科技项目 |
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| 摘 要： | 采用共沉淀法合成含CeO2催化剂M-Ce-O（M＝Fe、Cu、Zn、Co、Ni、Mn）和纯CeO2，对催化剂进行TPO活性测试及BET、XRD、FT-IR和H2 -TPR表征。结果表明，在Ce中添加过渡金属，改变了CeO2的晶相结构，比表面积增大，催化剂促进炭烟的燃烧，其促进炭烟氧化的活性顺序为：Ni-Ce-O＞Mn-Ce-O＞Cu-Ce-O＞Fe-Ce-O＞Ce-O＞Co-Ce-O＞Zn-Ce-O，其中，Ni-Ce-O表现出较高的活性，对应起燃温度降至340 ℃。TPR表明，催化活性与500 ℃以下的表面可还原氧量相关。
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| 关 键 词： | 环境保护工程 CeO2催化剂 催化氧化 柴油车炭烟 复合金属氧化物 |
Study on diesel soot oxidation over CeO2-containing catalysts |
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| CHEN Yu,YE Daiqi,HANG Hong,FU Mingli. Study on diesel soot oxidation over CeO2-containing catalysts[J]. Industrial Catalysis, 2008, 16(8): 65 |
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| Authors: | CHEN Yu YE Daiqi HANG Hong FU Mingli |
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| Affiliation: | 1.College of Environmental Science and Engineering，South China University of Technology，Guangzhou 510006， Guangdong，China；2.College of Chemistry and Chemical Engineering，Guangzhou University，Guangzhou 510006，Guangdong，China |
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| Abstract: | CeO2 containing M Ce-O（M＝Fe，Cu，Zn，Co，Ni，Mn）and CeO2 catalysts were prepared by co precipitation method. The catalysts were tested by TPO and characterized by BET，XRD，FT-IR andH2 TPR．It was found that addition of transition metal oxides resulted in change in the crystalline structure of CeO2 and hence increase in surface area．TPO results showed that the catalytic activity declined in the sequence of Ni-Ce-O＞Mn-Ce-O＞Cu-Ce-O＞Fe-Ce-O＞CeO2＞Co-Ce-O＞Zn-Ce-O．Among those M-Ce-O catalysts，Ni-Ce-O exhibited the best catalytic activity, with ignition temperature as low as 340 ℃. TPR results indicated that the surface reducible oxygen content below 500 ℃ was responsible for the activity for diesel soot oxidation. |
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| Keywords: | ceria containing catalyst catalytic oxidation diesel soot mixed metal oxides environmental engineering |
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