A comparative study of TiO2 supported noble metal catalysts for the oxidation of formaldehyde at room temperature
文献类型：会议论文
| 作者 | Zhang, Changbin; He, Hong |
| 出版日期 | 2007 |
| 会议名称 | 2nd Japan-China Workshop on Environmental Catalysis and Eco- Materials |
| 会议日期 | OCT 23-25, 2005 |
| 会议地点 | Fukuoka, JAPAN |
| 关键词 | formaldehyde noble metal TiO2 formate species in situ DRIFTS |
| 英文摘要 | The TiO2 supported noble metal (An, Rh, Pd and Pt) catalysts were prepared by impregnation method and characterized by means of X-ray diffraction (XRD) and BET. These catalysts were tested for the catalytic oxidation of formaldehyde (HCHO). It was found that the order of activity was Pt/TiO2 >> Rh/TiO2 > Pd/TiO2 > Au/TiO2 >> TiO2. HCHO could be completely oxidized into CO2 and H2O over Pt/TiO2 in a gas hourly space velocity (GHSV) of 50,000 h(-1) even at room temperature. In contrast, the other catalysts were much less effective for HCHO oxidation at the same reaction conditions. HCHO conversion to CO2 was only 20% over the Rh/TiO2 at 20 degrees C. The Pd/TiO2 and Au/TiO2 showed no activities for HCHO oxidation at 20 degrees C. The different activities of the noble metals for HCHO oxidation were studied with respect to the behavior of adsorbed species on the catalysts surface at room temperature using in situ DRIFTS. The results show that the activities of the TiO2 supported Pt, Rh, Pd and An catalysts for HCHO oxidation are closely related to their capacities for the formation of formate species and the formate decomposition into CO species. Based on in situ DRIFTS studies, a simplified reaction scheme of HCHO oxidation was also proposed. (C) 2007 Elsevier B.V. All rights reserved. |
| ISSN号 | 0920-5861 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/24724]  |
| 专题 | 生态环境研究中心_大气环境科学实验室 |
| 推荐引用方式 GB/T 7714 | Zhang, Changbin,He, Hong. A comparative study of TiO2 supported noble metal catalysts for the oxidation of formaldehyde at room temperature[C]. 见:2nd Japan-China Workshop on Environmental Catalysis and Eco- Materials. Fukuoka, JAPAN. OCT 23-25, 2005. |
入库方式： OAI收割
来源：生态环境研究中心
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