| CuO/Al_2O_3催化剂中毒与氧吸附 |
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| 引用本文： | 冯如彬,姚宏伟. CuO/Al_2O_3催化剂中毒与氧吸附[J]. 应用化学, 2001, 0(1) |
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| 作者姓名： | 冯如彬 姚宏伟 |
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| 作者单位： | 河北建筑科技学院化学教研室!邯郸056038 |
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| 摘 要： | 燃煤烟气属于贫燃燃烧 (燃烧时通入过量空气 )尾气 ,其中除含 NOx、SO2 外还含有 O2 等 ,与非贫燃系统尾气中 NOx 的催化还原脱除相比有着很大的不同 .目前这一领域的研究工作虽然取得一些进展 ,但仍有许多问题尚待解决 [1] .无论是 NOx 的催化还原还是催化分解 ,气相中存在的SO2 对非贵金属及其氧化物催化剂构成了严重威胁 ,原因是非贵金属氧化物很容易吸收 SO2 生成稳定的硫酸盐而使催化剂中毒失活 .为脱除烟气中的 NOx,有报道先将气相中的 NO催化氧化为NO2 ,然后将 NO2 和 SO2 同时液相吸收 .研究表明 ,作为 NO催化氧化的非贵…
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| 关 键 词： | CuO/Al_2O_3 CuSO_4 催化剂中毒 氧吸附 |
Poisoning and Oxygen Adsorption of CuO/Al_2O_3 Catalyst |
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| FENG Ru Bin ,YAO Hong Wei. Poisoning and Oxygen Adsorption of CuO/Al_2O_3 Catalyst[J]. Chinese Journal of Applied Chemistry, 2001, 0(1) |
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| Authors: | FENG Ru Bin YAO Hong Wei |
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| Affiliation: | FENG Ru Bin *,YAO Hong Wei |
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| Abstract: | The effect of CuSO 4 on the property of catalyst CuO/Al 2O 3 has been investigated. The TPD MS results showed that the amount of oxygen adsorbed on the surface of CuSO 4 CuO/Al 2O 3 increased with CuSO 4 content in the catalyst and the oxygen desorbed only at temperature above 900 K . TPSR results showed three adsorption sites of NO on the surface of CuO/Al 2O 3, respectively at 398, 643 and 683 K. The active site at 683 K was for NO decomposition and it was poisoned seriously when there was CuSO 4 in the CuO/Al 2O 3. For CuSO 4 CuO/Al 2O 3 the amount of N 2O formed from NO decomposition reduced probably due to the increase of oxygen species in the catalyst. |
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| Keywords: | CuO/Al 2O 3 CuSO 4 poisoning oxygen adsorption |
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