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.
出处
《催化学报》
SCIE
CAS
CSCD
北大核心
1999年第4期450-454,共5页
基金
国家自然科学基金
关键词
水滑石
镁
铝
复合氧化物
氮氧化物
消除
催化剂
hydrotalcite, magnesium oxide, alumina, transition metal, composite oxide, nitrogen oxide, catalytic eliminatiuon