FT-IR study of nitric oxide chemisorbed on Rh/Al/sub 2/O/sub 3/
Chemisorption of NO on Rh/Al/sub 2/O/sub 3/ surfaces has been examined by FT-IR. The spectra are assigned to two forms of Rh(NO) as well as the Rh(NO)/sub 2/ species. Apparent interconversion of the linear nitrosyl and dinitrosyl complexes is readily observed at room temperature. The dinitrosyl complex is characterized both by an invariant ratio of 1743- and 1825-cm/sup -1/ asymmetric and symmetric stretch bands with coverage and by isotopic data in /sup 15/NO and the mixed /sup 14/NO and /sup 15/NO systems. Force constants for NO stretching motions and for NO/NO ligand interactions on Rh(NO)/sub 2/ have been used to successfully calculate the experimentally observed spectrum for the mixed isotope, dinitrosyl species. Thermal desorption data and displacement of adsorbed NO with CO are also reported. 27 references, 9 figures, 2 tables.
- Research Organization:
- Univ. of Utah, Salt Lake City
- DOE Contract Number:
- AC02-76ER02190
- OSTI ID:
- 5897528
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 89:26; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
ABSORPTION SPECTROSCOPY
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSTS
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISORPTION
DATA
DESORPTION
EXPERIMENTAL DATA
FOURIER TRANSFORM SPECTROMETERS
INFORMATION
INFRARED SPECTRA
ISOTOPE ENRICHED MATERIALS
ISOTOPES
LIGHT NUCLEI
MATERIALS
MEASURING INSTRUMENTS
NITRIC OXIDE
NITROGEN 14
NITROGEN 15
NITROGEN COMPOUNDS
NITROGEN ISOTOPES
NITROGEN OXIDES
NORMAL-MODE ANALYSIS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
OXIDES
OXYGEN COMPOUNDS
REFRACTORY METAL COMPOUNDS
RHODIUM COMPOUNDS
RHODIUM OXIDES
SEPARATION PROCESSES
SORPTION
SORPTIVE PROPERTIES
SPECTRA
SPECTROMETERS
SPECTROSCOPY
STABLE ISOTOPES
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS