SPONTANEOUS DISPERSION OF SOME ACTIVE COMPONENTS ONTO THE SURFACES OF CARRIERS

作     者：谢有畅 杨乃芳 刘英骏 唐有祺 

作者机构：Laboratory for Structure of Matter Surface Structure Group Peking University Institute of Physical Chemistry 

出 版 物：《Science China Chemistry》 (中国科学:化学(英文版))

年 卷 期：1983年第26卷第4期

页      面：337-350页

核心收录：

主　　题：AI SPONTANEOUS DISPERSION OF SOME ACTIVE COMPONENTS ONTO THE SURFACES OF CARRIERS 

摘      要：If an ionic or molecular crystalline solid is mixed with a carrier of high specific surface and then heated at a suitable temperature below its melting point for several hours, the crystalline solid will disperse spontaneously onto the surface of the carrier. It has been proved by the fact that the X-ray diffraction peaks of the crystalline phase either diminish sharply or disappear completely according as whether the amount of the solid mixed with each unit weight of carrier exceeds the critical amount or not and this critical amount of solid is closely related to and usually varies directly as the specific surface of the *** the active component of a catalyst is a compound instead of a metal, and its quantity is not enough to cover the surface of the carrier, it often disperses somewhat as a monolayer, because the ions or molecules of the active component combine strongly with the surface ions or groups of the carrier. This paper presents some fundamental points and methods of investigation in