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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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硫中毒对Co3O4/CeO2复合氧化物上炭黑催化燃烧的影响
DOI: 10.1016/S1872-2067(14)60088-7, PP. 1504-1510
Keywords: 炭黑氧化,氧化钴,氧化铈,复合氧化物,硫中毒
Abstract:
？采用共沉淀法制备了CeO2，Co3O4和一系列Co3O4/CeO2复合氧化物催化剂，在400℃下含SO2的氧化气氛中对催化剂进行了硫中毒处理，通过原位红外光谱、X射线衍射、程序升温脱附和X射线光电子能谱对新鲜和硫中毒的样品进行了表征.结果表明，所有测试的硫中毒样品上均形成了硫酸盐，CeO2上累积的硫酸盐明显比Co3O4上的多，Co3O4/CeO2复合氧化物在硫中毒过程中形成了硫酸钴和硫酸铈.对新鲜和硫化样品在NO/O2气氛下进行了催化炭黑燃烧实验，发现Co3O4/CeO2复合氧化物的活性和抗硫性能优于CeO2，但抗硫性能低于Co3O4.
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