| High performance CuO-CeO2 catalysts for selective oxidation of CO in excess hydrogen： Effect of hydrothermal preparation conditions |
| |
| 摘 要： |
|
| 关 键 词： | 铈催化剂 氧化性能 制备条件 氧化铜 氧化铈 二氧化 水热法 碳氢 |
| 收稿时间： | 2 March 2009 |
| 修稿时间： | 7 April 2009. |
High performance CuO-CeO2 catalysts for selective oxidation of CO in excess hydrogen: Effect of hydrothermal preparation conditions |
| |
| Authors: | Pengfei Zhu Jing Li Qinqin Huang Siming Yan Mei Liu Renxian Zhou |
| |
| Institution: | aInstitute of Catalysis, Zhejiang University, Hangzhou 310028, Zhejiang, China;bSchool of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, Sichuan, China |
| |
| Abstract: | High performance CuO-CeO2 catalysts for selective oxidation of CO in excess hydrogen were prepared by a hydrothermal method under different preparation conditions and evaluated for catalytic activities and selectivities. By changing the nCTAB/nCe ratio and hydrothermal aging time, the catalytic activity of the CuO-CeO2 catalysts increased and the operating temperature window, in which the CO conversion was higher than 99%, was widened. XRD results showed no peaks of CuOx species and Cu-Ce-O solid solution were observed. On the other hand, Cu+ species in the CuO-CeO2 catalysts, which was associated with a strong interaction between copper oxide clusters and cerium oxide and could be favorable for improving the selective oxidation performance of CO in excess H2, were detected by H2-TPR and XPS techniques. |
| |
| Keywords: | selective oxidation CO excess hydrogen CuO-CeO2 catalyst hydrothermal preparation condition |
| 本文献已被 维普 ScienceDirect 等数据库收录！ |
| 点击此处可从《天然气化学杂志》浏览原始摘要信息 |
| 点击此处可从《天然气化学杂志》下载免费的PDF全文 |
