A method for increasing the surface area of perovskite-type oxides

Journal of Chemical Sciences

S Banerjee¹  V R Choudhary1¹ 

[1] Chemical Engineering Division, National Chemical Laboratory, Pune 411 008, India$$

关键词: ABO3-type perovskite oxides;    LaCoO3;    LaMnO3;    hydrothermal treatment;    catalytic combustion of methane.;   

DOI  :  

来源: Indian Academy of Sciences

【 摘 要 】

A method based on hydrothermal treatments is described for increasing the surface area of sintered ABO3-type perovskite oxides. Influence of hydrothermal treatments, such as water treatment at 125-300°C under autogeneous pressure and steam treatment at 350-800°C, to low surface area (or sintered) LaCoO3 and LaMnO3 perovskite oxides on their surface properties (viz. surface area, crystal size and morphology and surface La/(Co or Mn) ratio) and also catalytic activity in complete combustion of methane at different temperatures (450-600°C) has been thoroughly investigated. The hydrothermal treatments result in the activation of the perovskite oxides by increasing their surface area very markedly.

【 授权许可】

Unknown