高等学校化学学报

高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (2): 235.

• 论文 • 上一篇    下一篇

LaNiO3的导电性及其CO甲烷化催化活性

沈岳年1, 胡瑞生1, 刘新华1, 黄文德1, 盛世善2   

  1. 1. 内蒙古大学化学系, 呼和浩特, 010021;
    2. 大连化学物理所基础催化实验室
  • 收稿日期:1991-02-09 出版日期:1992-02-24 发布日期:1992-02-24
  • 通讯作者: 沈岳年

Conductivity and CO Methanation Activity of LaNiO3

SHEN Yue-nian1, HU Rui-sheng1, LIU Xin-hua1, HUANG Wen-de1, SHENG Shi-shan2   

  1. 1. Department of Chemistry, Inner Mongolia University, Hohhot, 010021;
    2. State Key Laboratory for Catalysis, Delian Institute of Chemical Physics, Chinese Academy of Sciences
  • Received:1991-02-09 Online:1992-02-24 Published:1992-02-24

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摘要： 用混合硝酸盐分解法得到的La2O3-NiO体系在800℃下焙烧制得氧化物LaNiO3,经XRD鉴定为单一钙钛矿型晶相,测定表明其电阻率低于相应的氧化镧、氧化镍混合物;高于金属镍,具有半金属性,对CO甲烷化的催化活性顺序为金属Ni>LaNiO3>NiO,与导电性大小顺序相一致,而导电性与含镍材料中镍的d电子公有化程度相关。

关键词: LaNiO3, 导电性, CO甲烷化

Abstract: In this paper, the single phase of polycrystal perovskite-type oxide, LaNiO3, which was prepared by decomposition of nitrates at 800℃, was characterized by X-ray diffractionThe resistivity of LaNiO3 was measuredIt was found that the resistivity of LaNiO3 was lower than that of the mixed oxides of La and Ni, but higher than that of metal nickelIt was suggested that LaNiO3 is a semi-metalThe activity order for catalysing COmethanation is metal nickel> LaNiO3>NiO, which corresponds to that of their conductivities and their localized degree of d electrons in nickel atoms or ions.

Key words: LaNiO3, Conductivity, CO rnethanation

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