An investigation of catalytic active phase-support interactions by IR, NMR and x-ray absorption spectroscopies
Active catalytic phases (metal, mixed metals, oxide or mixed oxides) interacting with oxide support on which the active phase is dispersed can affect the percentage exposed, the morphology of supported particles, the degree of reducibility of cations, etc., in a variety of ways. Our objective is to characterize the physical chemistry of the active phase-oxide support interaction by spectroscopic methods and to correlate this structure with catalytic function. Two catalytic systems and their associated techniques (x-ray absorption and NMR) are discussed in this progress report. Firstly, the interaction of Pt-Ni supported on silica and L-zeolite are characterized and compared by x-ray absorption spectroscopy (EXAFS). Secondly, we present both experimental and calculational developments of NMR for the investigation of amorphous silica-alumina catalysts and/or supports.
- Research Organization:
- Yale Univ., New Haven, CT (United States). Dept. of Chemical Engineering
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG02-88ER13836
- OSTI ID:
- 6956542
- Report Number(s):
- DOE/ER/13836-5; ON: DE93005646
- Country of Publication:
- United States
- Language:
- English
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An investigation of catalytic active phase-support interactions by IR, NMR and x-ray absorption spectroscopies. Progress report, January 15, 1991--July 31, 1993
A spectroscopic and catalytic investigation of active phase-support interactions
Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CATALYSTS
CATALYST SUPPORTS
HEXANE
CONVERSION
NICKEL
CATALYTIC EFFECTS
PLATINUM
ALUMINIUM 27
ALUMINIUM OXIDES
FINE STRUCTURE
NUCLEAR MAGNETIC RESONANCE
PROGRESS REPORT
SILICON 29
SILICON OXIDES
SODIUM 23
X-RAY SPECTRA
ZEOLITES
ALKALI METAL ISOTOPES
ALKANES
ALUMINIUM COMPOUNDS
ALUMINIUM ISOTOPES
CHALCOGENIDES
DOCUMENT TYPES
ELEMENTS
EVEN-ODD NUCLEI
HYDROCARBONS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
ISOTOPES
LIGHT NUCLEI
MAGNETIC RESONANCE
MATERIALS
METALS
MINERALS
NUCLEI
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
RESONANCE
SILICATE MINERALS
SILICON COMPOUNDS
SILICON ISOTOPES
SODIUM ISOTOPES
SPECTRA
STABLE ISOTOPES
TRANSITION ELEMENTS
400201* - Chemical & Physicochemical Properties
665100 - Nuclear Techniques in Condensed Matter Physics - (1992-)