Conversion of methanol to hydrocarbons over ZSM-5 zeolite: an examination of the role of aromatic hydrocarbons using /sup 13/carbon and deuterium-labeled feeds

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

DOI:https://doi.org/10.1016/0021-9517(83)90014-3· OSTI ID:6157159

Mole, T; Bett, G; Seddon, D

A mechanism is suggested for the acceleration by aromatic hydrocarbons of zeolite-catalyzed methanol conversion. According to this mechanism, the aromatic hydrocarbon undergoes successive ring methylation, prototropic conversion to an exo-methylene-cyclohexadiene, side-chain methylation, and ring de-ethylation. The overall result is that two methanol molecules give an ethylene molecule. The mechanism is supported by various reactions observed over ZSM-5 catalyst at methanol conversion temperatures: (I) deuteration of p-xylene by D/sub 2/O in the ring and methyl positions; (II) de-alkylation of p-ethyltoluene and n-propylbenzene; and (III) incorporation of the aromatic carbon of benzenes and alkylbenzenes into ethylene product, as revealed by /sup 13/C-labeling studies. 3 tables.

• Research Organization: Univ. of Melbourne, Parkville, Australia
• OSTI ID: 6157159
• Journal Information: J. Catal.; (United States), Vol. 84:2
• Country of Publication: United States
• Language: English

Related Subjects

10 SYNTHETIC FUELS
2-METHYLPROPANE
SYNTHESIS
ETHYLENE
METHANOL
CHEMICAL REACTIONS
PROPANE
ZEOLITES
CATALYTIC EFFECTS
AQUEOUS SOLUTIONS
BENZENE
CARBON 13
CATALYSTS
CHEMICAL REACTION KINETICS
DEUTERIUM
DEUTERIUM COMPOUNDS
EXPERIMENTAL DATA
GAS CHROMATOGRAPHY
HEAVY WATER
HIGH TEMPERATURE
MASS SPECTRA
MEDIUM TEMPERATURE
TEMPERATURE DEPENDENCE
TOLUENE
TRACER TECHNIQUES
XYLENE-PARA
ALCOHOLS
ALKANES
ALKENES
ALKYLATED AROMATICS
AROMATICS
CARBON ISOTOPES
CHROMATOGRAPHY
DATA
DISPERSIONS
EVEN-ODD NUCLEI
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
HYDROXY COMPOUNDS
INFORMATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
ISOTOPE APPLICATIONS
ISOTOPES
KINETICS
LIGHT NUCLEI
MATERIALS
MINERALS
MIXTURES
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
REACTION KINETICS
SEPARATION PROCESSES
SOLUTIONS
SPECTRA
STABLE ISOTOPES
WATER
XYLENES
090121* - Hydrocarbon Fuels- Chemical Synthesis- (1976-1989)
090210 - Alcohol Fuels- Properties- (1976-1989)