Chemical Composition,surface distribution of the elements and crystal structure offresh and deactivated Ag<sub>x</sub>Sb<sub>y</sub>O<sub>z</sub>/SiO<sub>2</sub
Axial ligation in solution by phthalocyaninatolron(Ⅱ)with a varicty of donor ligandshas been widely investigated by measuring the visible spectral changes.It h