V_2O_5/TiO_2的钾、钠、钙复合中毒及改性研究  

Effects of Potassium,Sodium and Calcium on De-NO_x performance over V_2O_5/TiO_2 catalysts

作　　者：付银成[1] 宋浩 吴卫红 杜学森[1] 高翔[1] 骆仲泱 岑可法[1] 

机构地区：[1]浙江大学能源清洁利用国家重点实验室,浙江杭州310027 [2]蓝天环保设备工程有限公司,浙江杭州310012

出　　处：《能源工程》2011年第2期40-44,共5页Energy Engineering

基　　金：国家自然科学基金资助项目(50776079);国家863计划资助项目(2007AA061802)

摘　　要：以V2O5/TiO2催化剂及在其基础上改良得到的VSbNbTi催化剂为研究对象,研究了碱金属K、Na和碱土金属Ca的氧化物及氯盐对两种催化剂以NH3选择催化还原NO反应的影响。研究结果表明,三种金属中,无论以氧化物或氯盐的形式存在,K对催化剂的毒化作用都是最强的;同时掺入两种氧化物时,两种组分之间的相互作用会弱化单组分对催化剂的毒化作用,且这种弱化作用以CaO最为明显;VSbNbTi催化剂具有良好的抗K、Na、Ca三种元素的氧化物或氯盐中毒的能力。The effects of K,Na and Ca oxides and chlorides on the selective catalytic reduction of NO with NH3 over V2O5/TiO2 catalyst and VSbNbTi catalyst which was improved from V2O5/TiO2 catalyst were studied.The results showed that Potassium had the strongest poisoning effect on the catalysts among three metals whatever in form of oxides or chlorides.When two kinds of oxides were doped on the catalysts simultaneously,the interaction between the two components would weaken the role of one component on catalyst poison,especially when CaO was doped.VSbNbTi catalyst had a high poisoning resistance from K oxides,Na oxides,Ca oxides or chlorides.

关 键 词：选择性催化还原 NOx V2O5/TIO2催化剂 中毒 SB NB 

分 类 号：X511[环境科学与工程—环境工程]