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| New insights into the influence mechanism of H2O and SO2 on Pt-W/Ti catalysts for CO oxidation | |
| Xu, Tieyao1,2; Liu, Xiaolong2; Zhu, Tingyu2,3; Feng, Chenglin1,2; Hu, Yutao2; Tian, Mengkui1 | |
| 2022-01-17 | |
| Source Publication | CATALYSIS SCIENCE & TECHNOLOGY
 |
| ISSN | 2044-4753 |
| Pages | 12 |
| Abstract | 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. |
| DOI | 10.1039/d1cy01984h |
| Language | 英语 |
| WOS Keyword | TEMPERATURE PROX REACTION ; METAL-SUPPORT INTERACTIONS ; CARBON-MONOXIDE ; PT/TIO2 CATALYSTS ; REDUCTION ; OXIDES ; NOX ; HCOO ; NH3 ; XPS |
| Funding Project | National Natural Science Foundation of China[51938014] ; National Natural Science Foundation of China[52170118] |
| WOS Research Area | Chemistry |
| WOS Subject | Chemistry, Physical |
| Funding Organization | National Natural Science Foundation of China |
| WOS ID | WOS:000747976000001 |
| Publisher | ROYAL SOC CHEMISTRY |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/51856 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Liu, Xiaolong; Zhu, Tingyu |
| Affiliation | 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 |
| First Author Affilication | Center of lonic Liquids and Green Engineering |
| Corresponding Author Affilication | Center of lonic Liquids and Green Engineering |
| Recommended Citation 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. |
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