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University of Illinois at Urbana-Champaign
Nuclear Magnetic Resonance of Platinum Catalysts: The Discovery of The Surface Resonance
Abstract
dc:descriptionWe have observed ('195)Pt NMR at 74 MHz in three samples of 10% platinum-on-alumina catalysts at 77 and 4.2(DEGREES)K. The NMR absorption lines for each sample extend from the resonance position of ('195)Pt in bulk Pt metal past the resonance position in diamagnetic Pt compounds to positive Knight shifts. The lineshapes differ dramatically among the samples, displaying several pronounced peaks. Using lineshape and relaxation time measurements coupled with other physical measurements, we can associate a low field peak in the lineshape structure with a single layer of platinum nuclei on the surface of the platinum particles, bonded to adsorbed atoms.
Degree
thesis:*- Name thesis:degree_name
- Ph.D.
- Level thesis:degree_level
- Dissertation
- Discipline thesis:degree_discipline
- Physics
- Grantor
- University of Illinois at Urbana-Champaign
- Year dc:date
- 2015
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Rhodes, Howard Edgar, Jr.
Subjects
dc:subject × 1Rights
- Language dc:language
- eng
Identifiers
dc:identifier.*- Identifier
- (UMI)AAI8114470
- OAI identifier oai:identifier
- oai:www.ideals.illinois.edu:2142/77201