New insights into the influence mechanism of H2O and SO2 on Pt-W/Ti catalysts for CO oxidation
文献类型：期刊论文
| 作者 | Xu, Tieyao1,2; Liu, Xiaolong2; Zhu, Tingyu2,3; Feng, Chenglin1,2; Hu, Yutao2; Tian, Mengkui1 |
| 刊名 | CATALYSIS SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2022-01-17 |
| 页码 | 12 |
| ISSN号 | 2044-4753 |
| DOI | 10.1039/d1cy01984h |
| 英文摘要 | A series of anatase TiO2 catalysts loaded with 0.1 wt% Pt and n% WO3 (0.1Pt-nW/Ti-A, n = 0, 1, 2, 5, and 10) were prepared via a two-step impregnation method. Among the catalysts, 0.1Pt-5W/Ti-A showed the best CO oxidation activity and outstanding stability in the presence of H2O and SO2. H2O can significantly improve the catalytic oxidation efficiency of the catalyst, and doping of WO3 apparently enhances the sulfur tolerance of the catalyst. The results of TEM, EDS, XRD and Raman analyses indicated that Pt and W both had a very high degree of dispersion in 0.1Pt-5W/Ti-A. XPS and H-2-TPR results showed that there was a certain effect between WO3 and Pt, as well as between WO3 and TiO2. From XPS and SO2-TPD results, it can be inferred that WO3 doping inhibited the adsorption of SO2, and the amount of S deposited on the catalyst surface did not increase with the reaction time. The results of in situ DRIFTS measurements and (H2O)-O-18 isotope labeling experiments revealed that H2O promoted the catalytic oxidation of CO through two paths. Consequently, the CO oxidation mechanism of 0.1Pt-5W/Ti-A in the presence of H2O and SO2 is proposed. |
| WOS关键词 | TEMPERATURE PROX REACTION ; METAL-SUPPORT INTERACTIONS ; CARBON-MONOXIDE ; PT/TIO2 CATALYSTS ; REDUCTION ; OXIDES ; NOX ; HCOO ; NH3 ; XPS |
| 资助项目 | National Natural Science Foundation of China[51938014] ; National Natural Science Foundation of China[52170118] |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000747976000001 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/51855]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Liu, Xiaolong; Zhu, Tingyu |
| 作者单位 | 1.Guizhou Univ, Sch Chem & Chem Engn, Guiyang 550025, Guizhou, Peoples R China 2.Chinese Acad Sci, Innovat Acad Green Manufacture, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Tieyao,Liu, Xiaolong,Zhu, Tingyu,et al. New insights into the influence mechanism of H2O and SO2 on Pt-W/Ti catalysts for CO oxidation[J]. CATALYSIS SCIENCE & TECHNOLOGY,2022:12. |
| APA | Xu, Tieyao,Liu, Xiaolong,Zhu, Tingyu,Feng, Chenglin,Hu, Yutao,&Tian, Mengkui.(2022).New insights into the influence mechanism of H2O and SO2 on Pt-W/Ti catalysts for CO oxidation.CATALYSIS SCIENCE & TECHNOLOGY,12. |
| MLA | Xu, Tieyao,et al."New insights into the influence mechanism of H2O and SO2 on Pt-W/Ti catalysts for CO oxidation".CATALYSIS SCIENCE & TECHNOLOGY (2022):12. |
入库方式： OAI收割
来源：过程工程研究所
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