| CoOx-CeOx/ZrO2催化氧化NO性能及抗SO2毒化研究 |
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| 引用本文： | CoOx-CeOx/ZrO催化氧化NO性能及抗SO毒化研究. CoOx-CeOx/ZrO2催化氧化NO性能及抗SO2毒化研究[J]. 燃料化学学报, 2012, 40(11): 1377-1383 |
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| 作者姓名： | CoOx-CeOx/ZrO催化氧化NO性能及抗SO毒化研究 |
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| 作者单位： | Department of Environmental Science and Engineering, Xiangtan University, Xiangtan 411105, China |
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| 基金项目： | 湖南省科技厅项目(2011FJ3090)。 |
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| 摘 要： | 采用浸渍法制备了一系列CoOx-CeOx/ZrO2催化剂,探讨了催化剂载体、Co含量、Co/Ce配比等对Co基催化剂催化氧化NO活性的影响及其机理。ZrO2负载的Co氧化物具有优良的低温NO催化氧化活性,铈的添加进一步提高了催化剂的低温活性。其促进机制主要是提高了催化剂吸附氧的能力及改善了Co在催化剂表面的分散。同时,掺杂铈使得催化剂抗SO2能力有一定增强,呈现出选择性毒化机制。
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| 关 键 词： | CoOx-CeOx/ZrO2催化剂 催化氧化NO 抗SO2 |
| 收稿时间： | 2012-01-17 |
Catalytic performance of CoOx-CeOx/ZrO2 in NO oxidation and its resistance against SO2 |
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| PENG Li-li,HUANG Yan,LI Jian-guang,ZHANG Jun-feng. Catalytic performance of CoOx-CeOx/ZrO2 in NO oxidation and its resistance against SO2[J]. Journal of Fuel Chemistry and Technology, 2012, 40(11): 1377-1383 |
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| Authors: | PENG Li-li HUANG Yan LI Jian-guang ZHANG Jun-feng |
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| Abstract: | A series of CoOx-CeOx/ZrO2 catalysts for NO oxidation were prepared by impregnation method and characterized by XRD, BET and H2-TPR. The influence of the support as well as the content of cerium and cobalt on the catalytic performance of CoOx-CeOx/ZrO2 in NO oxidation was investigated. The results indicated that the addition of Ce may improve the adsorption ability of the Co-based catalyst for oxygen and the dispersion of active cobalt species. Compared with CoOx/ZrO2 and CeOx/ZrO2, the CoOx-CeOx/ZrO2 catalysts exhibit higher activity and better resistance against SO2 for NO oxidation at low temperature. |
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| Keywords: | CoOx-CeOx/ZrO2 oxidation NO SO2 resistance |
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