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en.wikipedia.org
Butanol may be used as a
fuel in an
internal combustion engine. It is more similar to
gasoline than it is to
ethanol. A C4-hydrocarbon, butanol is a
drop-in fuel and thus works in vehicles designed for use with gasoline without modification.
[1] Both
n-butanol and
isobutanol have been studied as possible fuels.
Benefits
Biobutanol is an alternative to conventional transportation fuels. The benefits of biobutanol include:
- Higher energy content—Biobutanol's energy content is relatively high among gasoline alternatives. However, biobutanol's energy density is 10%–20% lower than gasoline's energy density.
- Lower Reid vapor pressure—When compared with ethanol, biobutanol has a lower vapor pressure, which means lower volatility and evaporative emissions.
- Increased energy security—Biobutanol can be produced domestically from a variety of feedstocks, while creating U.S. jobs.
- Fewer emissions—Fewer emissions are generated with the use of biobutanol compared with petroleum fuels. Carbon dioxide captured by growing feedstocks reduces overall greenhouse gas emissions by balancing carbon dioxide released from burning biobutanol.
- More transport options—Biobutanol is immiscible with water, meaning that it may be able to be transported in pipelines to reduce transport costs.
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