| 燃煤烟气中碱金属化合物对V2O5/AC催化剂低温脱硝的影响：
NH3的吸附与氧化 |
| |
| 引用本文： | 张先龙,吴雪平,黄张根,刘振宇.燃煤烟气中碱金属化合物对V2O5/AC催化剂低温脱硝的影响：
NH3的吸附与氧化[J].燃料化学学报,2009,37(4):496-500. |
| |
| 作者姓名： | 张先龙 吴雪平 黄张根 刘振宇 |
| |
| 作者单位： | 1.State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;
2.School of Chemical Engineering, Hefei University of Technology, Hefei 230009, China;
3.State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China |
| |
| 基金项目： | 国家自然科学基金，山西省自然科学基金 |
| |
| 摘 要： | 采用湿法浸渍-再干燥法将K2O和K2SO4担载到低温SCR催化剂V1/AC上，模拟研究了烟气中超细碱金属颗粒物对V1/AC催化剂脱硝活性的影响。结果表明，两种含K化合物的引入均导致了该催化剂的失活，明显抑制了NH3在催化剂上的吸附，尤其是热稳定性较低的吸附；K2SO4的抑制作用明显小于K2O，这与它们对催化剂SCR活性的影响规律相一致。K2O的担载对催化剂表面的氧化性能影响较小，但由于其能抑制NH3的吸附而引起催化剂的失活；K2SO4的担载则增加了催化剂表面吸附态的NH3在O2气氛中被过度氧化为NO的可能性。
|
| 关 键 词： | V2O5/AC催化剂 SCR 催化剂失活 TPD 碱金属颗粒物 |
| 收稿时间： | 2008-12-09 |
| 修稿时间： | 2009-03-26 |
Effect of potassium compounds on the catalytic activity of V_2O_5/AC for SCR of NO by NH_3 at low temperatures:NH_3 adsorption and oxidation |
| |
| ZHANG Xian-long,WU Xue-ping,HUANG Zhang-gen,LIU Zhen-yu.Effect of potassium compounds on the catalytic activity of V_2O_5/AC for SCR of NO by NH_3 at low temperatures:NH_3 adsorption and oxidation[J].Journal of Fuel Chemistry and Technology,2009,37(4):496-500. |
| |
| Authors: | ZHANG Xian-long WU Xue-ping HUANG Zhang-gen LIU Zhen-yu |
| |
| Institution: | 1.State Key Laboratory of Coal Conversion;Institute of Coal Chemistry;Chinese Academy of Sciences;Taiyuan 030001;China;2.School of Chemical Engineering;Hefei University of Technology;Hefei 230009;3.State Key Laboratory of Chemical Resource Engineering;Beijing University of Chemical Technology;Beijing 100029;China |
| |
| Abstract: | K2O and K2SO4 are loaded on the catalyst V2O5(1%)/AC(V1/AC) by the method of wet immersing followed by drying.The effect of potassium compounds on the catalytic performance of V1/AC for the low temperature SCR of NO by NH3 was investigated.It was found that both K2O and K2SO4 as ultra-fine particles loaded in V1/AC can cause the catalyst deactivation.The adsorption of NH3 on the catalyst,especially the portion of weakly adsorbed NH3,is inhibited remarkably by the loading of potassium compounds.The inhibitio... |
| |
| Keywords: | SCR TPD |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《燃料化学学报》浏览原始摘要信息 |
| 点击此处可从《燃料化学学报》下载免费的PDF全文 |
