| 工业V2O5-WO3/TiO2催化剂的碱土中毒研究 |
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| 引用本文： | 盘思伟,阮东亮,韦正乐,黄碧纯,程华.工业V2O5-WO3/TiO2催化剂的碱土中毒研究[J].工业催化,2013,21(12):32-36. |
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| 作者姓名： | 盘思伟 阮东亮 韦正乐 黄碧纯 程华 |
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| 作者单位： | 1.广东电网公司电力科学研究院，广东 广州 510080； ;
2.华南理工大学环境科学与工程学院，广东 广州 510006；;
3.广东省大气环境与污染控制重点实验室, 广东 广州 510006 |
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| 摘 要： | 以某燃煤电厂应用的V2O5-WO3/TiO2蜂窝型SCR脱硝催化剂为研究对象，在实验室条件下模拟该催化剂Ca、Mg及二者复合中毒，研究了不同浓度的Ca和Mg对催化剂活性的影响，并用XRD、H2-TPR及NH3吸附FT-IR对催化剂进行表征。结果表明，Ca和Mg对工业SCR脱硝催化剂均具有毒性作用，其中Mg毒性相对较强，复合中毒在一定程度上弱化单组分对催化剂活性的影响；催化剂组分分散度和结晶度不受Ca和Mg的影响，但CaO和MgO的掺入抑制V2O5的还原能力；CaO和MgO对催化剂表面的酸性位均存在影响，尤其是B酸位，二者复合中毒对酸性位的影响小于单一组分。
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| 关 键 词： | 催化剂工程 烟气脱硝 V2O5-WO3/TiO2催化剂 碱土金属 中毒 |
Study of alkaline earth poisoning of commercial V2O5-WO3/TiO2 catalyst |
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| PAN Siwei,RUAN Dongliang,WEI Zhengle,HUANG Bichun,CHENG Hua.Study of alkaline earth poisoning of commercial V2O5-WO3/TiO2 catalyst[J].Industrial Catalysis,2013,21(12):32-36. |
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| Authors: | PAN Siwei RUAN Dongliang WEI Zhengle HUANG Bichun CHENG Hua |
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| Affiliation: | 1.Electric Power Research Institute of Guangdong Power Grid Corporation, Guangzhou 510080, Guangdong, ;
China; 2.College of Environmental Science & Engineering, South China University of Technology, ;
Guangzhou 510006, Guangdong, China; 3.Guangdong Provincial Key Laboratory of Atmospheric;
Environment and Pollution Control, Guangzhou 510006, Guangdong, China |
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| Abstract: | The poisoning effects of Ca and Mg on honeycomb SCR catalysts of V2Os-TiO2 for flue gas denitrification used in a coal fired power plant were studied under the laboratory conditions. The catalysts were characterized by means of XRD, H2-TPR and FT-IR. The results indicated that Mg had stronger poisoning effect than Ca, and the interaction between Ca and Mg would weaken the poisoning effect of one component on catalyst activity; Ca and Mg had no influence on the dispersion and crystallinity of the catalyst,but doping their oxides could inhibit the reducing capacity of V2Os ;CaO and MgO had influence on acid sites of the catalyst surface, specially B acid sites. The compound poisoning effect of CaO and MgO on acid sites was less than that of single component. |
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| Keywords: | catalyst engineering flue gas denitrification V2O5-WO3／TiO2 catalyst alkaline earth poisoning |
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