Nuclear magnetic resonance study of the Pt-Rh 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/2142/25448
Description
Title
Nuclear magnetic resonance study of the Pt-Rh bimetallic clusters
Author(s)
Wang, Zhiyue
Issue Date
1987
Doctoral Committee Chair(s)
Slichter, C.P.
Department of Study
Physics
Discipline
Physics
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Nuclear magnetic resonance (NMR)
Pt-Rh bimetallic clusters
Pt-CO double resonance
Language
en
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.
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.
