Fourier transform infrared photoacoustic spectroscopy of pyridine adsorbed on silica-alumina and. gamma. -alumina
Journal Article
·
· J. Phys. Chem.; (United States)
Relative numbers of Bronsted acid to Lewis acid sites on silica-alumina have been determined photoacoustically by an infrared analysis of chemisorbed pyridine compared to similar adsorption of ..gamma..-alumina that has only Lewis sites. Results are similar to those obtained by earlier IR transmission studies that suggested the use of framework vibrations of silica as an internal reference standard. The 20% coverage of the silica-alumina surface by pyridine adsorbed at Bronsted sites found photoacoustically is in good agreement with a previous value of 17% estimated from transmission spectroscopic data. Reproducibility of the photoacoustic measurements is excellent.
- Research Organization:
- Univ. of Utah, Salt Lake City
- OSTI ID:
- 6577347
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 86:10; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010406 -- Coal & Coal Products-- Pyrolysis & Cracking-- (-1987)
08 HYDROGEN
080201 -- Hydrogen-- Chemisorption Storage
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104* -- Spectral Procedures-- (-1987)
ADSORPTION
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
AZINES
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISORPTION
COMPLEXES
DATA
ENERGY LEVELS
EXCITED STATES
EXPERIMENTAL DATA
HETEROCYCLIC COMPOUNDS
HIGH TEMPERATURE
INFORMATION
INFRARED SPECTRA
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOTOACOUSTIC SPECTROSCOPY
PRESSURE COEFFICIENT
PYRIDINES
REACTIVITY COEFFICIENTS
SEPARATION PROCESSES
SILICON COMPLEXES
SORPTION
SORPTIVE PROPERTIES
SPECTRA
SPECTROSCOPY
SURFACE PROPERTIES
VIBRATIONAL STATES
010406 -- Coal & Coal Products-- Pyrolysis & Cracking-- (-1987)
08 HYDROGEN
080201 -- Hydrogen-- Chemisorption Storage
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104* -- Spectral Procedures-- (-1987)
ADSORPTION
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
AZINES
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISORPTION
COMPLEXES
DATA
ENERGY LEVELS
EXCITED STATES
EXPERIMENTAL DATA
HETEROCYCLIC COMPOUNDS
HIGH TEMPERATURE
INFORMATION
INFRARED SPECTRA
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOTOACOUSTIC SPECTROSCOPY
PRESSURE COEFFICIENT
PYRIDINES
REACTIVITY COEFFICIENTS
SEPARATION PROCESSES
SILICON COMPLEXES
SORPTION
SORPTIVE PROPERTIES
SPECTRA
SPECTROSCOPY
SURFACE PROPERTIES
VIBRATIONAL STATES