Transient behavior of the system ethanol-diethyl ether-water-alumina
Journal Article
·
· J. Catal.; (United States)
The reactions of ethanol and diethyl ether on alumina have been studied by stopped-feed, started-feed, and pulse-flow techniques at 250/sup 0/C. In pulse-flow experiments, the reactants were introduced both on a fresh alumina surface and on a surface covered by reaction components during steady-state operation. The results indicate that surface ethoxide is the reaction intermediate in all transformations. From the alcohol, it is formed by the substitution of the surface hydroxyl groups under liberation of water and then decomposes relatively slowly into ethylene; also 2-butanol and 2-methyl-2-propanol behaved in this way. A general scheme for reversible surface reactions of alcohols, ethers, and water with surface hydroxyl and alkoxide groups is proposed. The possibility of the participation of alkoxides in the steady-state dehydration of alcohols is discussed. The distinction between fresh and working surfaces of alumina is stressed.
- Research Organization:
- Inst. of Chemical Process Fundamentals, Suchdol, Czechoslovakia
- OSTI ID:
- 6384123
- Journal Information:
- J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 87:2; ISSN JCTLA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Alcohol dehydration: Mechanism of ether formation using an alumina catalyst
Properties of an ethanol-diethyl ether-water fuel mixture for cold-start assistance of an ethanol-fueled vehicle
Dehydration of n-butanol on zeolite H-ZSM-5 and amorphous aluminosilicate: Detailed mechanistic study and the effect of pore confinement
Journal Article
·
Thu Nov 30 23:00:00 EST 1995
· Journal of Catalysis
·
OSTI ID:224007
Properties of an ethanol-diethyl ether-water fuel mixture for cold-start assistance of an ethanol-fueled vehicle
Journal Article
·
Sat Aug 01 00:00:00 EDT 1998
· Industrial and Engineering Chemistry Research
·
OSTI ID:659061
Dehydration of n-butanol on zeolite H-ZSM-5 and amorphous aluminosilicate: Detailed mechanistic study and the effect of pore confinement
Journal Article
·
Thu Sep 01 00:00:00 EDT 1994
· Journal of Catalysis
·
OSTI ID:110975
Related Subjects
090210* -- Alcohol Fuels-- Properties-- (1976-1989)
10 SYNTHETIC FUELS
ALCOHOLS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
DATA
DEHYDRATION
ETHANOL
ETHERS
ETHYL ETHER
EXPERIMENTAL DATA
FLUID FLOW
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
KINETICS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PULSATIONS
QUANTITY RATIO
REACTION INTERMEDIATES
REACTION KINETICS
SORPTIVE PROPERTIES
STEADY FLOW
STEADY-STATE CONDITIONS
SURFACE PROPERTIES
TRANSIENTS
WATER
YIELDS
10 SYNTHETIC FUELS
ALCOHOLS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
DATA
DEHYDRATION
ETHANOL
ETHERS
ETHYL ETHER
EXPERIMENTAL DATA
FLUID FLOW
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
KINETICS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PULSATIONS
QUANTITY RATIO
REACTION INTERMEDIATES
REACTION KINETICS
SORPTIVE PROPERTIES
STEADY FLOW
STEADY-STATE CONDITIONS
SURFACE PROPERTIES
TRANSIENTS
WATER
YIELDS