Surface structure and mechanisms of gasification catalyst deactivation. Quarterly report, May--July 1976
In the second quarterly period, design and construction of experimental facilities for the Laser Raman studies have continued. A vacuum system for the LEED/Auger studies will be delivered at the end of August. The surface chemical composition of several methanation catalysts in the reduced and unreduced form has been investigated by the ESCA technique. Additional results on the particle size distribution function have been obtained from the x-ray line broadening analysis of the data collected from several catalysts in the as received and sintered condition. Computer programs have been developed to account for intensity variations in diffracted beams that may arise due to the different atom types that form the surface structure. Computational techniques are also being developed to describe the intensity of elastically scattered beams as a function of energy. Currently available theoretical models are employed in these studies. Studies on the infrared spectra of a silica-supported Ni catalyst have been initiated. Infrared spectra of Ni/SiO/sub 2/ (C150-1-01) were recorded in transmission and in ATR (attenuated total reflectance). Infrared spectra of NiO, SiO/sub 2/, and NiSiO/sub 3/ are reported also for correlation with the catalyst spectrum.
- Research Organization:
- Kentucky Univ., Lexington (USA)
- OSTI ID:
- 7236028
- Report Number(s):
- FE-2229-2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COAL GASIFICATION
COMPUTER CODES
DEACTIVATION
ELEMENTS
EVALUATION
GASIFICATION
INFRARED SPECTRA
METALS
METHANATION
NICKEL
NICKEL COMPOUNDS
NICKEL OXIDES
NICKEL SILICATES
OXIDES
OXYGEN COMPOUNDS
PARTICLE SIZE
SILICATES
SILICON COMPOUNDS
SILICON OXIDES
SIZE
SPECTRA
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
010404* -- Coal
Lignite
& Peat-- Gasification
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COAL GASIFICATION
COMPUTER CODES
DEACTIVATION
ELEMENTS
EVALUATION
GASIFICATION
INFRARED SPECTRA
METALS
METHANATION
NICKEL
NICKEL COMPOUNDS
NICKEL OXIDES
NICKEL SILICATES
OXIDES
OXYGEN COMPOUNDS
PARTICLE SIZE
SILICATES
SILICON COMPOUNDS
SILICON OXIDES
SIZE
SPECTRA
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS