Development of the Pair Distribution Function Technique to

Page 1. Development of the Pair Distribution Function Technique to Study the Nucleation and Growth Mechanism of Supported Metals ...
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Development of the Pair Distribution Function Technique to Study the Nucleation and Growth Mechanism of Supported Metals María M. Martínez-Iñesta, Department of Chemical Engineering, University of Puerto Rico, Mayaguez ,PR 00680

By refining the in situ differential pair distribution function (shown in the right) the average Pt cluster diameter and Pt-Pt bond length (shown below) was determined and monitored during reduction using zeolite X as support.

The areas of the Pt-Pt, Pt-O, and Pt-Si/Al peaks (shown on the right) were also analyzed and three growth zones were identified.