摘要
Fe和Mn氧化物价态的电子探针分析已见文献报导。本文研究Cu,Ni,Co,Fe,Mn,Cr及其氧化物的I_(Lα)/I_(Kα,I_(Lα)/I_(Lβ)强度比和Mo,Nb,Zr及其氧化物的I_((Lβ)_2)/I_((Lα)_1),I_((Lγ)_1)/I_((Lα)_1)强度比的价态效应,观察到强度比按一定规律随价态而变化,并利用此效应分析催化剂的价态。通过分析可以了解催化剂反应前后以及不同制备条件下价态的变化,这对了解催化过程有着重要的意义。
Valence state analyses of Fe and Mn in oxides by EPMA have been reported in literature^(1.2). In this paper, the effects of valence state on I_(Iα)/I_(Kα) and I_(Iα)/I_(Iβ)—the intensity ratios of Cu, Ni, CO, Fe, Mn, Cr and their ox-ides, and on I_(Iβ2)/I_(Iα1) and I_(Iy1)/I_(Iα1)—the intensity ratios of Mo, Nb, Zr and their oxides were studied. It was ob-served that intensity ratios change with valence states in accordance with some regularities, and these effects could be utilized for analyzing the valence states of catalysts.
出处
《电子显微学报》
CAS
CSCD
1992年第6期451-458,共8页
Journal of Chinese Electron Microscopy Society
