Alcohols synthesis from carbon oxides and hydrogen on palladium and rhodium catalysts. Study of active species
The synthesis of primary chemical products and/or gasoline additives of high octane number from synthesis gas obtained by coal gasification has received much attention these past years. Actually, even if methanol has been the most important oxygenated product, intensive research is being carried out for the direct synthesis of higher alcohols: ethanol for organic synthesis, or an alcohol mixture, from C/sub 1/ to C/sub 5/, as an additive to gasoline. For the methanol synthesis, copper-based catalysts, have long been considered as the only effective catalysts. Meanwhile Poutsma et al., showed the possible obtaining of methanol with palladium; this last metal has always been considered inactive for directing production of methane from CO-H/sub 2/. It is also true that the selectivity and activity vary greatly with the support. Even if other factors like the particle size was evoked to explain the change in the selectivity, the support effect seems to be primordial. It can play different roles on: the acidity and basicity, the structure of the active sites, the stabilization of intermediates and the formation of an intimate contact between metallic particles and sodium or lithium ions, a strong metal support interaction (SMSI); in particular with rhodium catalysts.
- Research Organization:
- Laboratoire de Chimie Organique Appliquee, E.N.S.C.S., U.A. 469, 1, rue Blaise Pascal, 67008 Strasbourg, Cedex
- OSTI ID:
- 5469477
- Report Number(s):
- CONF-860425-
- Journal Information:
- Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States), Vol. 31:1; Conference: 191. American Chemical Society national meeting, New York, NY, USA, 13 Apr 1986
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ETHANOL
CHEMICAL PREPARATION
METHANOL
PALLADIUM
CATALYTIC EFFECTS
RHODIUM
ACTIVATION ENERGY
ANTIKNOCK RATINGS
CARBON OXIDES
CATALYSTS
CHEMICAL ACTIVATION
CHEMICAL REACTION YIELD
CHROMIUM OXIDES
COAL GASIFICATION
COPPER
GASOLINE
HYDROGEN
METHANATION
RARE EARTH COMPOUNDS
SILICON OXIDES
SYNTHESIS GAS
TITANIUM OXIDES
ALCOHOLS
CARBON COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMIUM COMPOUNDS
ELEMENTS
ENERGY
FLUIDS
FUELS
GASES
GASIFICATION
HYDROXY COMPOUNDS
LIQUID FUELS
METALS
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM PRODUCTS
PLATINUM METALS
SILICON COMPOUNDS
SYNTHESIS
THERMOCHEMICAL PROCESSES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
YIELDS
090221* - Alcohol Fuels- Chemical Synthesis- (1976-1989)