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In-situ Pair Distribution Function Study of the Growth of Supported Platinum Particles in Zeolite X

Published online by Cambridge University Press:  03 November 2014

Liliana M. Gámez ,
Oscar Resto  and
Maria M. Martinez-Inesta
Liliana M. Gámez
Affiliation:
University of Puerto Rico-Mayaguez, Chemical Engineering Department PO Box 9000 Mayaguez, PR 00681 U.S.A.
Oscar Resto
Affiliation:
University of Puerto Rico-Rio Piedras, Physics Department PO Box 70377 San Juan PR 00931 U.S.A.
Maria M. Martinez-Inesta
Affiliation:
University of Puerto Rico-Mayaguez, Chemical Engineering Department PO Box 9000 Mayaguez, PR 00681 U.S.A.
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Abstract

Platinum particles supported in zeolites are used as catalysts for hydrogenation/ dehydrogenation reactions. In this study in situ high energy synchrotron X-ray diffraction was used to study the Pt particle formation under calcination and reduction conditions using time resolved pair distribution function (PDF). Because these particles grow inside the pores of zeolite X, PDF is able to give insight to unique information at the short and medium interatomic distance range that cannot be readily obtained with other techniques. Among the information obtained are the Pt atom interactions during calcination and the evolvement of the Pt particle sizes and average Pt-Pt distances during reduction.

Keywords

Ptzeolitex-ray diffraction (XRD)
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1712: Symposium ZZ/AAA/BBB – Recent Advances in the Structural Characterization of Materials , 2014 , mrss14-1712-aaa08-04
Copyright
Copyright © Materials Research Society 2014 

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References

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