In/Al_2O_3催化剂低温脱硝性能研究  

Research on Low Temperature Denitration Performance of In/Al_2O_3 Catalyst

作　　者：许振冲 吴爽[1] 

机构地区：[1]辽宁石油化工大学化学与材料科学学院,辽宁抚顺113001

出　　处：《稀有金属与硬质合金》2016年第4期48-52,共5页Rare Metals and Cemented Carbides

基　　金：国家科技支撑项目(2012BAF03B00)

摘　　要：分别采用浸渍法和共沉淀法制备了In/Al_2O_3催化剂,并对其进行选择性还原氮氧化物的研究。结果表明:共沉淀法制备的催化剂具有较高的低温活性和NO选择性。以过渡金属Ti对载体进行改性,得到的In-Ti/Al_2O_3双金属组分催化剂具有高活性,这是由于表面存在无定型In氧化物且催化剂比表面积较高,同时TiO_2的加入减弱了In与Al_2O_3之间的相互作用,形成了无定型InTiO_2晶体,使In的还原温度移向低温。In/Al2O3 catalyst was prepared with impregnation method and coprecipitation method, respectively,and research on selective reduction of NOx with the catalyst was carried out. The results show that the catalyst prepared by coprecipitation has higher low-temperature activity and NO selectivity. The bimetal component catalyst of In-Ti/Al2O3 was obtained by the carrier modification with transition metal Ti. And In-Ti/Al2O3 has high activity due to amorphous In oxides and high specific surface area. The added TiO2 can weaken the interaction between In and Al2O3 to form amorphous InTiO2 crystal, resulting in low- er reduction temperature of In.

关 键 词：In/Al2O3催化剂 浸渍法 共沉淀法 Ti改性 选择性还原 NO 

分 类 号：O643.36[理学—物理化学]