Complete oxidation of o-xylene over Pd/Al(2)O(3) catalyst at low temperature
文献类型：期刊论文
| 作者 | Huang, Shaoyong; Zhang, Changbin; He, Hong |
| 刊名 | CATALYSIS TODAY
 |
| 出版日期 | 2008-12-15 |
| 卷号 | 139期号:2015-01-02页码:15-23 |
| 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. |
| 公开日期 | 2015-08-31 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/21882]  |
| 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[J]. CATALYSIS TODAY,2008,139(2015-01-02):15-23. |
| APA | Huang, Shaoyong,Zhang, Changbin,&He, Hong.(2008).Complete oxidation of o-xylene over Pd/Al(2)O(3) catalyst at low temperature.CATALYSIS TODAY,139(2015-01-02),15-23. |
| MLA | Huang, Shaoyong,et al."Complete oxidation of o-xylene over Pd/Al(2)O(3) catalyst at low temperature".CATALYSIS TODAY 139.2015-01-02(2008):15-23. |
入库方式： OAI收割
来源：生态环境研究中心
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