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Title:Nuclear magnetic resonance study of the Pt-Rh bimetallic clusters
Author(s):Wang, Zhiyue
Doctoral Committee Chair(s):Slichter, C.P.
Department / Program:Physics
Discipline:Physics
Degree:Ph.D.
Genre:Dissertation
Subject(s):Nuclear magnetic resonance (NMR)
Pt-Rh bimetallic clusters
Pt-CO double resonance
Abstract:We report the study of supported Pt-Rh bimetallic catalysts by 195Pt NMR and by 13C NMR of adsorbed CO. The metal particles are sA-soA in diameter. Study of the dependence of the 13CO resonance position as a function of Pt/Rh ratio and particle size shows that Rh is segregated to the surface. Study of the 195Pt NMR shows that the center of the particles consists of Pt only. By 195Pt - 13 CO double resonance we measure CO frequencies for those CO molecules which are bonded to Pt. We found thereby that the electronic structure of the bimetallic particle surfaces probed by CO NMR is independent of whether CO is bonded to Pt or Rh.
Issue Date:1987
Genre:Dissertation / Thesis
Type:Text
Language:English
URI:http://hdl.handle.net/2142/25448
Rights Information:1987 Zhiyue Wang
Date Available in IDEALS:2011-06-20
Identifier in Online Catalog:3476225


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