利用跟踪TPR-GC和XRD技术考察LaNiO_(3)的还原机理  

STUDY OF THE REDUCING MECHANISM OF LaNiO_(3) BY TRACK TPR-GC AND XRD TECHNIQUES

作　　者：郑洪元[1] 杜少斌[1] 马福泰[1] 王瑾[1] 吕光烈[2] 

机构地区：[1]杭州大学化学系,杭州310028 [2]杭州大学中试室,杭州310028

出　　处：《无机化学学报》1991年第4期474-476,共3页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金资助项目

摘　　要：钙钛矿型复合氧化物对许多反应具有较高的催化活性,它们被广泛地用作CO氧化的催化剂.陈水华等对SmMeO_3(Me:V、Cr、Mn、Fe、Co)和Tascon等对LaMeO_3(Me:V、Cr、Mn、Fe、Co、Ni)上CO催化活性评价说明,LnMnO_3和LnCoO_3(Ln=La、Sm)活性最好,而LaNiO_3则表现和LaCoO_3相似活性,由此可推断这些氧化物具有相似的催化性能.本文用TPR-GC和XRD考察了在还原气氛下,LaNiO_3的还原机理,这对研究其电、磁特性具有一定的指导意义.This paper reported that the reducing mechanism of LaNiO3 was studied with TPR-GC and XRD. The results showed that the reduction for LaNiO3 was divided into two steps, among of them ,the single electron reduction accompanied with three electron reduction, the reducing medium product was monoclinic La2Ni2O5.

关 键 词：TPR-GC La_(2)Ni_(2)O_(5) 还原机理 

分 类 号：O614.331[理学—无机化学]