高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (1): 111.

• 论文 • 上一篇    下一篇

ABO3型复合氧化物LnAlO3的结构及甲烷偶联催化性能的研究

王江, 甄开吉, 毕颖丽   

  1. 吉林大学化学系, 长春, 130023
  • 收稿日期:1990-11-03 出版日期:1992-01-24 发布日期:1992-01-24
  • 通讯作者: 甄开吉
  • 基金资助:

    国家自然科学基金

A Study of Structure of Perovskite Oxide LnAlO3 and Their Catalytic Properties for Methane Coupling

WANG Jiang, ZHEN Kai-ji, BI Ying-li   

  1. Department of Chemistry, Jilini University, Changchun, 130023
  • Received:1990-11-03 Online:1992-01-24 Published:1992-01-24

摘要: 用XRD技术表征了LnAlO3的体相结构和晶体的畸变度,用TPD技术考察了LnAlO3的吸附氧行为。表征结果与催化性能关联表明,LnAlO3的畸变度大、缺陷多、吸附氧的能力强,其催化性能就好;吸附的原子氧是活化甲烷生成C2的氧种。

关键词: 钙钛矿型复合氧化物, 晶格畸变, 甲烷氧化偶联

Abstract: The bulk Structure and deformation of the perovskite oxides——LnAlO3 were characterized by using XRDand the behavior of oxygen adsorption on these catalysts was investigated by using TPD.The corelation between the crystalline structure and the catalytic properties indicates that a high degree deformation of structure and a large amount of surface defect may cause a strong ability of oxygen adsorption, as a result, leading to a nice catalytic activation.An as-sumeption was made that the adsorbed oxygen atom is the species for the activation of methane.

Key words: Perovskite oxide, Lattice deformation, Oxidation coupling of methane

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