Title of article :
Study of local environment of Ag in Ag/CeO2 catalyst by EXAFS
Author/Authors :
Sarode، نويسنده , , P.R and Priolkar، نويسنده , , K.R and Bera، نويسنده , , Parthasarathi and Hegde، نويسنده , , M.S and Emura، نويسنده , , S and Kumashiro، نويسنده , , R، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2002
Abstract :
The combustion synthesized Ag/CeO2 catalysts have been characterized by Extended X-ray Absorption Fine Structure (EXAFS) spectroscopy at the Ag K-edge. It has been found that Ag+ like species is present in 1% Ag/CeO2 catalyst, whereas mostly Ag metal clusters are found in 3% Ag/CeO2. The analysis of EXAFS spectra indicates that about one oxygen atom is coordinated to Ag central atom at a distance of 2.19 Å in 1% Ag/CeO2 catalyst along with eight coordinated AgAg bond at 2.86 Å. The AgO bond is absent in 3% Ag/CeO2.
Keywords :
A. Inorganic compounds , B. Chemical synthesis , C. XAFS
Journal title :
Materials Research Bulletin
Journal title :
Materials Research Bulletin
