掺铈负载型氧化铜催化剂催化氧化甲苯研究  

Study on performance of cerium mixed into copper oxide loading catalysts in catalytic oxidation of toluene

作　　者：姚杰[1] 张鹏[1] 尤宏[1] 何莹[1] 

机构地区：[1]哈尔滨工业大学市政环境工程学院,哈尔滨150090

出　　处：《哈尔滨商业大学学报（自然科学版）》2009年第2期150-153,190,共5页Journal of Harbin University of Commerce：Natural Sciences Edition

摘　　要：以60～80目的γ-Al2O3为载体,CuO为活性组分,添加稀土元素Ce,用浸渍法制备了负载型催化剂,通过催化氧化甲苯评价了该催化剂的活性.相对于CuO/Al2O3催化剂,添加Ce后的CuO-CeO2/Al2O3催化剂对甲苯催化氧化的起燃温度和完全转化温度均有明显的降低,当Cu的负载量为5%,Cu/Ce的比值为1∶1,反应温度大于200℃时对甲苯的去除率可保持在90%以上.CuO-CeO2/Al2O3催化剂具有较强的抗冲击能力,能够在较大范围的空速和进气质量浓度下,保持良好的催化活性.当空速在6 000～12 000 h^-1的范围内,对甲苯的去除率始终保持在98.8%以上;当进气质量浓度在880～6 400 mg/m3的范围内,对甲苯的去除率均在99.5%以上.The loading catalysts are prepared by dipping, using T - Al2O3（60 - 80mesh） as carriers, Cu as active components, adding lanthanon Ce, the activity of prepared catalysts is investigated by catalytic oxidation of toluene. Compares with CuO/Al2O3 catalyst, CuO-CeO2/Al2O3 catalyst which is added Ce had lower temperature of initial combustion and complete oxidation, when the loading amount of Cu is 5% , the rate of Cu/Ce is 1：1 and the temperature is more than 200℃, the removal efficiency of toluene could retain 90%. CuO-CeO2/Al2O3catalyst had better resistance against impact, it can maintain well catalytic activity at wide range of airspeed and entering gas concentration. When the airspeed is at the range of 6 000 - 12 000 h^-1, the removal efficiency of toluene could retain more than 98.8% ; and when the entering gas concentration is at the range of 880 - 6400 mg/m^3 , the removal efficiency of toluene could retain more than 95.5%.

关 键 词：负载型催化剂 催化氧化 甲苯 CUO CEO2 

分 类 号：X701[环境科学与工程—环境工程]