| 富氧条件下Co/MOR 催化剂上甲烷选择催化还原NO |
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| 引用本文： | 富氧条件下Co/MOR 催化剂上甲烷选择催化还原NO. 富氧条件下Co/MOR 催化剂上甲烷选择催化还原NO[J]. 燃料化学学报, 2015, 43(9): 1106-1112 |
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| 作者姓名： | 富氧条件下Co/MOR 催化剂上甲烷选择催化还原NO |
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| 作者单位： | 1. Department Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China;2. CNOOC Tianjin Research and Design Institute of Chemical Industry, Tianjin 300131, China;3. China Huanqiu Contracting & Engineering Company Liaoning Branch, Fushun 113006, China |
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| 基金项目： | National Natural Science Foundation of China (21342009); State Key Laboratory of Heavy Oil Processing(SKLHOP201501); Funding Project for Academic Human Resources Development in Institutions of Higher Learning Under the Jurisdiction of Beijing Municipality (PHR20110517). |
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| 摘 要： | 采用浸渍法制备了一系列用于甲烷选择催化还原(CH4-SCR)氮氧化物的Co/MOR催化剂。采用XRD、BET、TG-MS、H2-TPR、NH3-TPD和NO-TPD等手段对催化剂进行表征,并对其在甲烷选择催化还原氮氧化物反应中的活性进行评价。结果表明,钴物种以Co3O4尖晶石形态存在于Co/MOR催化剂中;与MOR载体相比,引入钴物种后,催化剂的酸性、氧化还原能力和对NO的吸脱附能力均发生了变化。在甲烷选择催化还原氮氧化物反应中,Co/MOR的催化活性与其氧化还原性能和对NO的吸脱附性能直接相关;其中,Co负载量为10%的Co(10)/MOR催化剂的CH4-SCR脱硝活性最好,在330℃下NO的转化率达54.2%。
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| 关 键 词： | 氮氧化物 甲烷 选择性催化还原 钴氧化物 丝光沸石 |
| 收稿时间： | 2015-05-12 |
Selective catalytic reduction of NO by methane over the Co/MOR catalysts in the presence of oxygen |
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| WANG Hong,LI Bin,LU Xue-bin,LI Cui-qing,DING Fu-chen,SONG Yong-ji. Selective catalytic reduction of NO by methane over the Co/MOR catalysts in the presence of oxygen[J]. Journal of Fuel Chemistry and Technology, 2015, 43(9): 1106-1112 |
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| Authors: | WANG Hong LI Bin LU Xue-bin LI Cui-qing DING Fu-chen SONG Yong-ji |
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| Abstract: | A series of Co/MOR catalysts were prepared by impregnation method and used in the selective catalytic reduction of nitric oxide with methane (CH4-SCR). These catalysts were characterized by XRD, BET, TG-MS, H2-TPR, NH3-TPD and NO-TPD; their performance in the CH4-SCR of NO was investigated. The results showed that cobalt species exist as Co3O4 spinal in the Co/MOR catalysts; the acidity and redox and NO absorption/desorption ability of the Co/MOR catalysts are changed after the incorporation of cobalt in MOR zeolite, in comparison with pure MOR zeolite. The catalytic performance of Co/MOR is closely related to its redox and NO adsorption/desorption ability, which are dependent on the cobalt loading. The Co(10)/MOR catalyst with a cobalt loading of 10% exhibits high activity in the CH4-SCR of NO; over it the conversion of nitric oxide reaches 54.2% at 330 ℃. |
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| Keywords: | nitric oxide methane selective catalytic reduction cobalt oxide mordenite |
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