Abstract
EXAFS measurements have been performed on the Pt LIII-edge of a highly dispersed (H/M∼1.14) Pt/γ-Al 2O 3 catalyst, reduced at 673 K after calcination at the same temperature. After reduction an oxidic platinum oxygen bond (2.05Å) is present with a very low average oxygen coordination number. This bond arises from a few not reduced platinum-oxide crystallites. Platinum oxygen bonds with a coordination distance of 2.65 Å could be detected significantly due to the high quality of the EXAFS data and the use of a new data analysis procedure. These bonds are interpreted to be originating from a coordination of the interfacial platinum atoms with the oxygen ions of the support.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
