Complete oxidation of o-xylene over Pd/Al(2)O(3) catalyst at low temperature
文献类型：会议论文
| 作者 | Huang, Shaoyong; Zhang, Changbin; He, Hong |
| 出版日期 | 2008 |
| 会议名称 | 3rd China-Japan Workshop on Environmental Catalysis and Eco-Materials |
| 会议日期 | OCT 11-12, 2007 |
| 会议地点 | Beijing, PEOPLES R CHINA |
| 关键词 | o-Xylene catalytic oxidation Noble metal catalyst Pd/Al(2)O(3) Mechanism |
| 英文摘要 | The catalytic activities of gamma-Al(2)O(3) supported noble metal (Pd, Pt, Au, Ag, Rh) catalysts were tested and compared for catalytic oxidation of o-xylene. The results show that Pd/Al(2)O(3) is the most active catalyst among these noble metal catalysts. The effects of Pd loading and gas hourly space velocity (GHSV) on the activity of Pd/Al(2)O(3) catalyst for o-xylene oxidation were investigated at low temperature from 60 to 190 degrees C. At 1 wt% Pd loading, 100 ppm o-xylene can be completely oxidized to CO(2) and H(2)O at ca.110 degrees C over the Pd/Al(2)O(3) catalyst at a GHSV of 10,000 h(-1). The 1% Pd/Al(2)O(3) was characterized using BET, XRD methods. The XRD patterns showed that PdO was the dominant species in the fresh Pd/Al(2)O(3) catalyst and metallic I'd was the main phase in both the H(2) pretreated and the used catalysts. The metallic I'd is proposed to be the active species for o-xylene oxidation. The mechanism of o-xylene oxidation was studied with respect to the behavior of adsorbed species on Pd/Al(2)O(3) surface examined by in situ DRIFTS and the gas products detected by the online GC/MS. On the basis of experimental results, a simplified mechanism for the catalytic oxidation of o-xylene over Pd/Al(2)O(3) was proposed. (C) 2008 Elsevier B.V. All rights reserved. |
| ISBN号 | 0920-5861 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/24688]  |
| 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 | Huang, Shaoyong,Zhang, Changbin,He, Hong. Complete oxidation of o-xylene over Pd/Al(2)O(3) catalyst at low temperature[C]. 见:3rd China-Japan Workshop on Environmental Catalysis and Eco-Materials. Beijing, PEOPLES R CHINA. OCT 11-12, 2007. |
入库方式： OAI收割
来源：生态环境研究中心
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