THE INFLUENCE OF PREPARATION VARIABLES ON Ni CRYSTALLITE SIZE IN HIGH TEMPERATURE OXIDATION OF LaNi5 ACCOMPANIED BY AN INCREASE IN SURFACE AREA

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

AYUMU YOKOYAMA¹  KAORU ONOE¹  TADASHI SHIROTSUKA¹ 

[1]Department of Applied Chemistry, Waseda University

关键词: Chemical Reaction;    Rare Earth Compound;    Intermetallic Catalyst;    Oxidation;    Reduction;    Crystallite Size;    Thermogravimetry;    X Ray Diffraction;   

DOI  :  10.1252/jcej.19.519

来源: Maruzen Company Ltd

【 摘 要 】

References(10)Cited-By(2)In this study, the effect on crystallite size of oxidation temperature, oxidation time, and reduction temperature was investigated by the LaM5 method to clarify the factors controlling catalytic properties. When nickel was oxidized, the increase in surface area due to powdering was considerable. A model of the surface area increase was proposed based upon a shrinking-core model. An increase in the oxidation and reduction temperatures was accompanied by an increase in crystallite size.

【 授权许可】

Unknown