| Cu/ZrO2-Al2O3上表面氧物种脱附及其对催化性能的影响 |
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| 引用本文： | 周仁贤,蒋晓原,吕光烈,郑小明.Cu/ZrO2-Al2O3上表面氧物种脱附及其对催化性能的影响[J].物理化学学报,1997,13(2):128-133. |
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| 作者姓名： | 周仁贤 蒋晓原 吕光烈 郑小明 |
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| 作者单位： | Institute of Catalysis,Hangzhou University,Centrul Laboratory of Hangzhou University,Hangzhou 310028 |
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| 摘 要： | 采用ＸＲＤ,ＴＰＤ－ＭＳ和ＴＰＲ方法研究了ＺｒＯ２的改性对ＣｕＯ／γ－Ａｌ２Ｏ３催化剂上铜物种人散状态,表面氧物种的脱附和恢复性能,铜物种还原再氧行为的影响,并ＣＯ氧化反应为探针考察了催化剂的氧化活性,结果表明,ＺｒＯ２的存在的铜物种在γ－Ａｌ２Ｏ３载体上的分散容量降低,促进ＣｕＯ／γ－Ａｌ２Ｏ３催化剂上表面氧物种的脱附,同时有效地促进铜物种的还原,从而增加ＣＯ的氧化活性,实验还发现热处理条件对催
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| 关 键 词： | ZrO2 CuO/γ-Al2O3 CO氧化 表面氧物种 |
| 收稿时间： | 1996-07-01 |
| 修稿时间： | 1996-10-18 |
Desorption of Surface Oxygen on Cu/ZrO2-γ-Al2O3 and its Influence on the Catalytic Performance |
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| Zhou Renxian ,Jiang Xiaoyuan ,Lu Guanglie, Zheng Xiaoming.Desorption of Surface Oxygen on Cu/ZrO2-γ-Al2O3 and its Influence on the Catalytic Performance[J].Acta Physico-Chimica Sinica,1997,13(2):128-133. |
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| Authors: | Zhou Renxian Jiang Xiaoyuan Lu Guanglie Zheng Xiaoming |
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| Institution: | Institute of Catalysis,Hangzhou University,Centrul Laboratory of Hangzhou University,Hangzhou 310028 |
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| Abstract: | The effects of ZrO2 modification of γ-Al2O3 on the desorption-renewal properties of surface oxygen species and the reduction behavior of copper species on CuO/γ-Al2O3 were studied by TPD-MS and TPR methods, and its activity for CO oxidation was examined. The results indicated that the presence of ZrO2 could promote the desorption of surface oxygen species and the reduction of copper species on CuO/γ-Al2O3 and thus increasing the activity for CO oxidation. In addition, it was found that the desorptibility of oxygen species and the reducibility of copper species on γ-Al2O3 or ZrO2-Al2O3 were affected by variation in the conditions of thermal treatment. |
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| Keywords: | 2' ') ZrO2" target="_blank">">ZrO2 γ-Al2O3' ') CuO/γ-Al2O3" target="_blank">">CuO/γ-Al2O3 CO oxidation Surface oxygen species |
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