2014 Volume 87 Issue 4 Pages 131-138
It is well known that powdered solid-inorganic compounds play pivotal roles in industrial and environmental processes as catalysts and adsorbents. From such viewpoints, it is important to clarify the surface states of such materials to design more efficient materials working in these processes. In this comment, fundamental analysis methods of the active species formed on powdered solid materials are firstly explained on the basis of energetic, structural and electronic viewpoints. In the succeeding section, the specific properties caused by the metal-ions exchanged in zeolites are described: the strong N2 adsorption on the monovalent copper ion formed in the MFI-type zeolite (abbreviated as MFI), Xe reacted species with the monovalent copper ion in MFI, and the formation of novel atomic zinc species as well as the monovalent zinc ion through the H2 activation on ZnMFI.
