Nuclear Magnetic Resonance Study of the Platinum - Rhodium Bimetallic Clusters
Wang, Zhiyue
This item is only available for download by members of the University of Illinois community. Students, faculty, and staff at the U of I may log in with your NetID and password to view the item. If you are trying to access an Illinois-restricted dissertation or thesis, you can request a copy through your library's Inter-Library Loan office or purchase a copy directly from ProQuest.
Permalink
https://hdl.handle.net/2142/77410
Description
Title
Nuclear Magnetic Resonance Study of the Platinum - Rhodium Bimetallic Clusters
Author(s)
Wang, Zhiyue
Issue Date
1987
Department of Study
Physics
Discipline
Physics
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Physics, Condensed Matter
Language
eng
Abstract
We report the study of supported Pt-Rh bimetallic catalysts by $\sp{195}$Pt NMR and by $\sp $C NMR of adsorbed CO. The metal particles are 5A-50A in diameter. Study of the dependence of the $\sp $CO resonance position as a function of Pt/Rh ratio and particle size shows that Rh is segregated to the surface. Study of the $\sp{195}$Pt NMR shows that the center of the particles consists of Pt only. By $\sp{195}$Pt-$\sp $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.
Use this login method if you
don't
have an
@illinois.edu
email address.
(Oops, I do have one)
IDEALS migrated to a new platform on June 23, 2022. If you created
your account prior to this date, you will have to reset your password
using the forgot-password link below.
