Correlations of physical and chemical properties of lanthanide oxides with catalytic behaviors. Progress report, September 1, 1980-August 31, 1981
Using the batch reaction/analysis system that has been described in a previous Progress Report, separate characterization of the behaviors of both La/sub 2/O/sub 3/ and Nd/sub 2/O/sub 3/ for ethanol decomposition have been completed. Investigation of the corresponding properties of Pr/sub 2/O/sub 3/ for this reaction is in progress. In spite of their dissimilar cationic electronic/magnetic properties and differing surface basicities, the catalytic behaviors of La/sub 2/O/sub 3/ and Nd/sub 2/O/sub 3/ are virtually identical in all respects for both dehydration and dehydrogenation pathways of the alcohol conversion. This similarity involves not only their initial activity/selectivity parameters, but also their responses to variations in catalyst preparation/pretreatment conditions, crystallographic phase, and poisoning of the differnt kinds of catalytic sites. Preliminary results for Pr/sub 2/O/sub 3/ indicate that its behavior also closely resembles those of La/sub 2/O/sub 3/ and Nd/sub 2/O/sub 3/. Detailed discussions of the dehydration and dehydrogenation pathways are presented in this report.
- Research Organization:
- Texas A and M Univ., College Station (USA). Dept. of Chemistry
- DOE Contract Number:
- AS05-78ER06042
- OSTI ID:
- 6536713
- Report Number(s):
- DOE/ER/06042-3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ACETALDEHYDE
ALCOHOLS
ALDEHYDES
ALKENES
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUBIC LATTICES
DECOMPOSITION
DEHYDRATION
DEHYDROGENATION
DIFFRACTION
ETHANOL
ETHYLENE
FLUIDS
GASES
HEXAGONAL LATTICES
HIGH TEMPERATURE
HYDROCARBONS
HYDROXY COMPOUNDS
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
NEODYMIUM COMPOUNDS
NEODYMIUM OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PRASEODYMIUM COMPOUNDS
PRASEODYMIUM OXIDES
RARE EARTH COMPOUNDS
RESEARCH PROGRAMS
SCATTERING
X-RAY DIFFRACTION
400201* -- Chemical & Physicochemical Properties
ACETALDEHYDE
ALCOHOLS
ALDEHYDES
ALKENES
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUBIC LATTICES
DECOMPOSITION
DEHYDRATION
DEHYDROGENATION
DIFFRACTION
ETHANOL
ETHYLENE
FLUIDS
GASES
HEXAGONAL LATTICES
HIGH TEMPERATURE
HYDROCARBONS
HYDROXY COMPOUNDS
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
NEODYMIUM COMPOUNDS
NEODYMIUM OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PRASEODYMIUM COMPOUNDS
PRASEODYMIUM OXIDES
RARE EARTH COMPOUNDS
RESEARCH PROGRAMS
SCATTERING
X-RAY DIFFRACTION