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General
- Methyl
tertiary butyl ether (methyl tert-butyl ether, methyl t-butyl ether,
or MTBE) is a chemical compound used as a fuel additive in gasoline.
- MTBE is a
colorless, flammable liquid with a distinctive odor that many people
find unpleasant. It is soluble in alcohol and ether. It is unstable
in acidic solutions.
- Synonyms for
MTBE are methyl tert-butyl ether, tert-butyl methyl ether, and
2-methoxy-2-methylpropane.
- Methyl
tertiary butyl ether (MtBE) is a gasoline additive that boosts the
oxygen content in fuel (an oxygenate), resulting in less
air-polluting carbon monoxide being released from vehicle exhaust
systems.
Process
- High-silicon
synthetic and natural (clinoptilolite) zeolites, carbon fibrous
sulfonic cation exchanger,and aluminosilicate catalyst were first
tested as catalysts for production of methyl tert-butyl ether.
- MTBE oxidation
by alkane-grown cells of P. mendocina KR-1 is a cometabolic process
that involves the activity of an inducible n-alkaneoxidizing
monooxygenase enzyme system.
Application
& Technology
- Methyl
tert-butyl ether (MTBE) is commonly added to gasoline in the United
States for octane enhancement and as a fuel oxygenate. It is used in
large quantities each year to reduce levels of ozone and carbon
monoxide.
- MTBE
phytoremediation technology depends primarily on mass removal to
control the downgradient spread of dissolvedphase.
- MTBE. Cores of
live oak trees above a plume showed MTBE in the tree fluids. Some
field tests are ongoing at MTBE sites.
- Methyl
tert-butyl ether may be removed from environmental media by some of
the active or passive strategies typically employed for gasoline
remediation, including Monitored Natural Attenuation (MNA).
Market
- The blending
of methyl tertiary butyl ether (MTBE) into motor gasoline has
increased dramatically.
- MTBE usage
grew in response to octane demand resulting initially from the
phaseout of lead from gasoline and later from rising demand for
premium gasoline.
- The oxygenated
gasoline program stimulated an increase in MTBE production.
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