以水滑石为前体的Mg-Al-M复合氧化物对催化消除NOx的活性  

SYNTHESIS AND CHARACTERIZATION OF COMPOSITE OXIDEMgAlM FROM HYDROTALCITE AND ITS CATALYTICACTIVITY FOR NOx REMOVAL

作　　者：刘钰[1] 杨向光[1] 张忠良 吴越[1] 

机构地区：[1]中国科学院长春应用化学研究所

出　　处：《催化学报》1999年第4期450-454,共5页

基　　金：国家自然科学基金

摘　　要：通过Ｈ２ＴＰＲ，ＸＲＤ，ＴＧＤＴＡ及比表面积测定等对ＭｇＡｌ水滑石化合物进行了表征，研究了焙烧温度对水滑石物理性质的影响．在此基础上，研究了ＭｇＡｌ水滑石中加入过渡金属（Ｍ）离子后对ＮＯ＋ＣＯ反应的催化活性．结果发现，含有Ｃｕ离子的样品对ＮＯ＋ＣＯ反应有较高的催化活性。The physicochemical properties of MgAl hydrotalcite (HT) and the changes of property following increasing the calcination temperature were investigated in detail by using H2TPR, XRD, TGDTA and BET techniques. Transition metal oxides supported on MgOAl2O3 were synthesized by calcination of MgAlM(n (Mg) n (Al) n (M) =311; M=Cr, Mn, Fe, Co, Ni, Cu). The catalytic activity of the samples for NO reduction by CO was studied. The results showed that MgAlCu had far higher activity than other samples. The catalytic activity of the samples with different ratios of MgAlCu was measured and compared with that of CoMAl.

关 键 词：水滑石 镁 铝 复合氧化物 氮氧化物 消除 催化剂 

分 类 号：X511.05[环境科学与工程—环境工程] O643.36[理学—物理化学]