An efficient novel regeneration method for Ca-poisoning V2O5-WO3/TiO2 catalyst
An efficient novel regeneration method for Ca-poisoning V2O5-WO3/TiO2 catalyst
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钙中毒V2O5-WO3/TiO2催化剂的高效新型再生方法
DOI：
10.1016/j.catcom.2016.06.017
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发表时间：
2016-12-05
影响因子：
3.7
通讯作者：
Hao, Jiming
中科院分区：
文献类型：
--
作者：
Li, Xiang;Li, Xiansheng;Hao, Jiming
基于活性、结构、还原性、酸度和反应细节的变化，研究了V2O5-WO3/TiO2催化剂对NOx选择性催化还原的Ca中毒和再生。研究发现，高含量的CaO会导致CaWO4的生成，从而钝化大块钨种和新鲜催化剂的表面酸位。此外，可达表面氧和还原性也受到氧化钙的极大抑制。但与以往的再生方法不同，HEDP对CaO的去除率独家优异，且活性成分损失不大，具有较好的工业应用前景。(C) 2016年Elsevier B.V.出版
Ca poisoning and regeneration on V2O5-WO3/TiO2 catalysts for selective catalytic reduction of NOx was investigated based on the changes of activity, structure, reducibility, acidity and reaction details. It is found that high contents of CaO can lead to CaWO4 formation and thus passivate bulk tungsten species and surface acid sites of fresh catalyst. Additionally, reactable surface oxygen species and reducibility are also greatly suppressed by CaO species. However, unlike previous regeneration method, HEDP showed exclusive and excellent removal rate of CaO without large active ingredients loss, which had a better prospect of industrial application. (C) 2016 Published by Elsevier B.V.