| 利用XPS研究复合氧化物催化剂在汽车尾气净化中硫中毒及抗硫中毒机理 |
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| 引用本文： | 秦正龙,杨汉培.利用XPS研究复合氧化物催化剂在汽车尾气净化中硫中毒及抗硫中毒机理[J].环境导报,1997(4):16-18. |
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| 作者姓名： | 秦正龙 杨汉培 |
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| 作者单位： | [1]徐州师范大学 [2]清江石油化工厂 |
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| 摘 要： | 运用ＸＰＳ分析方法研究一系列复合氧化物催化剂中毒前后硫在其表面的各种形态及催化剂活性组分中毒前后的组成，价态，化学机理及其变化。结果表明，ＳＯ２在催化剂活性中心进行化学吸附，然后一部分ＳＯ２与活性组分生成相应的亚硫酸盐和硫酸盐，从而使催化剂失活。
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| 关 键 词： | 氧化物催化剂 汽车尾气 二氧化硫 中毒 净化 |
Mechanism of the Sulfur Poisoning and Antipoisoning of Sulfur of Mixed Oxide Catalysts for Automobile Emission Control by Using XPS |
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| Qin Zhenglong ,Yang Hanpei.Mechanism of the Sulfur Poisoning and Antipoisoning of Sulfur of Mixed Oxide Catalysts for Automobile Emission Control by Using XPS[J].Environment Herald,1997(4):16-18. |
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| Authors: | Qin Zhenglong Yang Hanpei |
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| Institution: | Qin Zhenglong ;Yang Hanpei |
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| Abstract: | By using XPS,before and after the intoxication of mixed oxide catalysts,the various appearance and the composition. valence and chemical mechanism of the active component of catalysts were studied. SO2 was first adsorbed on the active sites of catalysts. Then,chemical adsorption of SO2 in the active component of catalysts had occurred to form sulphite and sulphate. Thus the catalysts were deactivated. |
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| Keywords: | Mixed oxide catalyst Automobile emission control Sulfur poisoning |
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