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利用跟踪TPR-GC和XRD技术考察LaNiO3的还原机理及其还原可逆性考察

STUDY OF THE REDUCING MECHANISM FOR LaNiO3 USING FRACK TPR-GC AND XRD FECHNIGUES AND HS OXIDATION-RECUCTION LEVERSIBILITY

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【作者】 杜少斌王瑾

【Author】 Du Shao Bin;Wang Jin Department of chemistry Yunnan Normal University Department of chemistry, Hangzhou University

【机构】 云南师范大学化学系杭州大学化学系

【摘要】 本文利用TPR、TPR-GC和XRD技术详细地研究了镍酸镧(LaNiO3)的还原机理.同时还利用TPO和TPR考察了还原后样品的氧化还原可逆性.结果说明:LaNiO3分两步还原,其中单电子还原过程伴随着三电子还原过程的同时进行.LaNiO3还原中间产物为单斜晶点的LaNiO3;此外,还原后的具有良好的氧化还原可逆性.

【Abstract】 this paper reported that the ledncing mechanism of Lathanum Nickelate (LaNiO3)was studied detailly with TPR. TPR-GC and XRD technigues. Meanwhile, the oxidation-re-duction leversibility of the reduced sample has been mvestigated by TPO and TPR The resultsshowed that the reduction for LaNiO3was divided into two steps, among of them, the single elec-tron reduction accompanied with three electrons reduction, the reducing medium product wasmenoclihic La2Ni2O5; otherwise, the reduced priducts of LaNiO3have well the oxidation-reduc-tion leversibility.

  • 【文献出处】 云南师范大学学报(自然科学版) ,Journal of Yunnan Normal University(Natural Sciences Edition) , 编辑部邮箱 ,1991年02期
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