Production of chemicals from methanol--1. Low molecular weight olefins
The C/sub 2/-C/sub 4/ olefin yield from the conversion of methanol to methyl ether and hydrocarbons was optimized on phosphorus-modified ZSM-5 zeolites at 100% conversion to methyl ether at 600/sup 0/C; under these conditions, the conversion of methyl ether to C/sub 2/-C/sub 4/ olefins had 74.6% selectivity and the C/sub 2/-C/sub 4/ olefin-paraffin ratio was 24.1:1. Experiments at low conversion and reference to reaction pathways developed by Chang and Silvestri indicated that methanol and/or its ether reacted on the phosphorus-modified zeolite to yield ethylene as the primary products, probably via a methyl ethyl ether intermediate, followed by alkylation of the ethylene with methanol or its ether to give an olefin with one additional carbon atom. The reaction of 2-butenes with methyl ether over phosphorus-modified ZSM-5 zeolite yielded up to 40% C/sub 5/ olefins of which more than half had an isoprene structure.
- Research Organization:
- Mobil Chem. Co.
- OSTI ID:
- 6229563
- Journal Information:
- J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 61:1; ISSN JCTLA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALCOHOLS
ALKENES
CATALYSTS
CHEMICAL REACTION KINETICS
CONVERSION
DATA
ELEMENTS
EXPERIMENTAL DATA
HYDROCARBONS
HYDROXY COMPOUNDS
INFORMATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
KINETICS
MATERIALS
METHANOL
MINERALS
NONMETALS
NUMERICAL DATA
OPTIMIZATION
ORGANIC COMPOUNDS
PHOSPHORUS
QUANTITY RATIO
REACTION INTERMEDIATES
REACTION KINETICS
YIELDS
ZEOLITES