{"title":"Au/CeMOx （M = Cu, Zr, Mo）催化剂CO氧化性能及抗SO2性能的比较研究","authors":"Meidan Han, Zehao Guo, Xuefeng She, Zhuo Zhang, Qingguo Xue","doi":"10.1007/s10562-025-05143-0","DOIUrl":null,"url":null,"abstract":"<div><p>Three kinds of mesoporous Au/CeMO<sub>x</sub> (M = Cu, Zr, Mo) catalysts were prepared by the hydrothermal method (HT) and precipitation method. The prepared catalysts were evaluated for their performance in CO oxidation and SO<sub>2</sub> resistance. Among the three metal-modified catalysts, Cu exhibited the most significant enhancement in CO oxidation activity, which can be attributed to its high BET surface area, large average pore volume, excellent reducibility, and abundant surface-adsorbed oxygen (O<sub>II</sub>). However, under SO<sub>2</sub> exposure, the deactivation rate of the catalysts followed the order: Au/CeMoO<sub>x</sub> < Au/CeZrO<sub>x</sub> < Au/CeO<sub>x</sub> < Au/CeCuO<sub>x</sub>, indicating that Mo modification provided the greatest resistance to SO<sub>2</sub> poisoning. This enhanced stability was primarily ascribed to the role of Mo in modulating surface acidity and specific surface area, which inhibited SO<sub>2</sub> adsorption and the subsequent formation of SO<sub>4</sub><sup>2−</sup> species, as evidenced by SO<sub>2</sub>-TPD and FTIR analysis. The investigation of CO oxidation on both fresh and SO<sub>2</sub>-treated Au/CeMO<sub>x</sub> catalysts provides valuable insights for their potential industrial applications.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 9","pages":""},"PeriodicalIF":2.3000,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Comparative Study on the CO Oxidation Performance and SO2 Resistance of Au/CeMOx (M = Cu, Zr, Mo) Catalysts\",\"authors\":\"Meidan Han, Zehao Guo, Xuefeng She, Zhuo Zhang, Qingguo Xue\",\"doi\":\"10.1007/s10562-025-05143-0\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Three kinds of mesoporous Au/CeMO<sub>x</sub> (M = Cu, Zr, Mo) catalysts were prepared by the hydrothermal method (HT) and precipitation method. The prepared catalysts were evaluated for their performance in CO oxidation and SO<sub>2</sub> resistance. Among the three metal-modified catalysts, Cu exhibited the most significant enhancement in CO oxidation activity, which can be attributed to its high BET surface area, large average pore volume, excellent reducibility, and abundant surface-adsorbed oxygen (O<sub>II</sub>). However, under SO<sub>2</sub> exposure, the deactivation rate of the catalysts followed the order: Au/CeMoO<sub>x</sub> < Au/CeZrO<sub>x</sub> < Au/CeO<sub>x</sub> < Au/CeCuO<sub>x</sub>, indicating that Mo modification provided the greatest resistance to SO<sub>2</sub> poisoning. This enhanced stability was primarily ascribed to the role of Mo in modulating surface acidity and specific surface area, which inhibited SO<sub>2</sub> adsorption and the subsequent formation of SO<sub>4</sub><sup>2−</sup> species, as evidenced by SO<sub>2</sub>-TPD and FTIR analysis. The investigation of CO oxidation on both fresh and SO<sub>2</sub>-treated Au/CeMO<sub>x</sub> catalysts provides valuable insights for their potential industrial applications.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":508,\"journal\":{\"name\":\"Catalysis Letters\",\"volume\":\"155 9\",\"pages\":\"\"},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2025-08-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Catalysis Letters\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10562-025-05143-0\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Catalysis Letters","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s10562-025-05143-0","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Comparative Study on the CO Oxidation Performance and SO2 Resistance of Au/CeMOx (M = Cu, Zr, Mo) Catalysts
Three kinds of mesoporous Au/CeMOx (M = Cu, Zr, Mo) catalysts were prepared by the hydrothermal method (HT) and precipitation method. The prepared catalysts were evaluated for their performance in CO oxidation and SO2 resistance. Among the three metal-modified catalysts, Cu exhibited the most significant enhancement in CO oxidation activity, which can be attributed to its high BET surface area, large average pore volume, excellent reducibility, and abundant surface-adsorbed oxygen (OII). However, under SO2 exposure, the deactivation rate of the catalysts followed the order: Au/CeMoOx < Au/CeZrOx < Au/CeOx < Au/CeCuOx, indicating that Mo modification provided the greatest resistance to SO2 poisoning. This enhanced stability was primarily ascribed to the role of Mo in modulating surface acidity and specific surface area, which inhibited SO2 adsorption and the subsequent formation of SO42− species, as evidenced by SO2-TPD and FTIR analysis. The investigation of CO oxidation on both fresh and SO2-treated Au/CeMOx catalysts provides valuable insights for their potential industrial applications.
期刊介绍：
Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis.
The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.
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