Highly efficient Ru/CeO2 catalysts for formaldehyde oxidation at low temperature and the mechanistic study
文献类型：期刊论文
| 作者 | Qin, Xiaoxiao; Chen, Xueyan; Chen, Min; Zhang, Jianghao; He, Hong ; Zhang, Changbin
|
| 刊名 | CATALYSIS SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2021-03-07 |
| 卷号 | 11期号:5页码:1914-1921 |
| ISSN号 | 2044-4753 |
| 英文摘要 | Formaldehyde (HCHO) elimination at low temperature is of great interest for indoor air purification. In this work, 1 wt% Ru supported on CeO2 and Al2O3 catalysts were prepared by an impregnation method and subsequently tested for the catalytic oxidation of HCHO at low temperature. The activity of the Ru/CeO2 catalyst was significantly superior to the Ru/Al2O3 catalyst, achieving complete conversion of 130 ppm HCHO at 90 degrees C with a GHSV of 100 000 mL g(cat)(-1) h(-1). Brunauer-Emmett-Teller (BET) measurements, X-ray powder diffraction (XRD), high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM), X-ray photoelectron spectroscopy (XPS) and H-2-temperature-programmed reduction (H-2-TPR) were carried out to characterize the physical and chemical properties of the catalysts. The results revealed that RuOx species, rather than Ru-0, were directly responsible for the HCHO oxidation over Ru/CeO2, and the excellent performance of Ru/CeO2 was mainly attributed to the strong interaction between Ru and CeO2, which induced a high dispersion and high redox capacity of RuOx species. The reaction mechanism of HCHO oxidation was also investigated using in situ diffuse reflectance infrared Fourier transform spectroscopy (in situ DRIFTS). It was shown that the HCHO oxidation over the Ru/CeO2 and Ru/Al2O3 catalysts followed the same pathway of the direct formate oxidation (HCHO -> HCOO + OH -> H2O + CO2). |
| WOS研究方向 | Chemistry, Physical |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46046]  |
| 专题 | 生态环境研究中心_水污染控制实验室 |
| 作者单位 | 1.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qin, Xiaoxiao,Chen, Xueyan,Chen, Min,et al. Highly efficient Ru/CeO2 catalysts for formaldehyde oxidation at low temperature and the mechanistic study[J]. CATALYSIS SCIENCE & TECHNOLOGY,2021,11(5):1914-1921. |
| APA | Qin, Xiaoxiao,Chen, Xueyan,Chen, Min,Zhang, Jianghao,He, Hong,&Zhang, Changbin.(2021).Highly efficient Ru/CeO2 catalysts for formaldehyde oxidation at low temperature and the mechanistic study.CATALYSIS SCIENCE & TECHNOLOGY,11(5),1914-1921. |
| MLA | Qin, Xiaoxiao,et al."Highly efficient Ru/CeO2 catalysts for formaldehyde oxidation at low temperature and the mechanistic study".CATALYSIS SCIENCE & TECHNOLOGY 11.5(2021):1914-1921. |
入库方式： OAI收割
来源：生态环境研究中心
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