On the structure of Pt-Ir bimetallic catalyst

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Abstract

A new method to study the state of alloying on bimetallic metal clusters is presented. The method is based on high resolution weak beam images which are also defocussed. Pt-Ir catalyst supported on γ-Al2O3 are studied. It is concluded that in this system particles do not form an alloy for their sample preparation conditions of the present work.

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