Conversion of methanol to ethylene over ZSM-5 zeolite: a reexamination of the oxonium-ylide hypothesis, using /sup 13/carbon- and deuterium-labeled feeds

Journal Article · Thu Dec 01 04:00:00 EST 1983 · J. Catal.; (United States)

DOI:https://doi.org/10.1016/0021-9517(83)90013-1· OSTI ID:6157163

Mole, T

/sup 13/Carbon- and deuterium-labeled feeds have been used to examine the conversion of aqueous methanol to hydrocarbons over ZSM-5 zeolite in the presence of various (C/sub 3/ and C/sub 4/) alcohols. Particular attention has been paid to the carbon-labeled ethylene product and deuterium-labeled dimethyl ether. The isotopic composition of the ethylene requires that only part of the ethylene is formed directly from methanol or dimethyl ether. The rest of the ethylene is formed indirectly and incorporates the carbon of the other alcohol as well as the carbon of the methanol. The best explanation for the directly formed ethylene, and for hydrogen-isotope exchange in dimethyl ether, still appears to be the oxonium-ylide mechanism. 3 figures, 7 tables.

• Research Organization: Univ. of Melbourne, Parkville, Australia
• OSTI ID: 6157163
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 84:2; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
090210 -- Alcohol Fuels-- Properties-- (1976-1989)
10 SYNTHETIC FUELS
2-METHYLPROPENE
ADDITIVES
ALCOHOLS
ALKENES
AQUEOUS SOLUTIONS
BUTANOLS
CARBON 13
CARBON ISOTOPES
CATALYTIC EFFECTS
CHARGED PARTICLES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHROMATOGRAPHY
DATA
DEUTERIUM
DEUTERIUM COMPOUNDS
DISPERSIONS
ETHANOL
ETHERS
ETHYL ETHER
ETHYLENE
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
GAS CHROMATOGRAPHY
HEAVY WATER
HIGH TEMPERATURE
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
HYDROXY COMPOUNDS
INFORMATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
IONS
ISOTOPE APPLICATIONS
ISOTOPES
KINETICS
LIGHT NUCLEI
MASS SPECTRA
MATERIALS
METHANOL
MINERALS
MIXTURES
MOLECULAR IONS
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXONIUM IONS
OXYGEN COMPOUNDS
PROPANOLS
PROPYLENE
QUANTITY RATIO
REACTION INTERMEDIATES
REACTION KINETICS
SEPARATION PROCESSES
SOLUTIONS
SPECTRA
STABLE ISOTOPES
SYNTHESIS
TEMPERATURE DEPENDENCE
TIME DEPENDENCE
TRACER TECHNIQUES
WATER
ZEOLITES