Quote:
Originally Posted by cRiPpLe_rOoStEr
What would be the advantage of using iso-butanol? Is ethanol out of question?
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Ethanol is
out of the question! Butanol has a higher burning power than Ethanol. Butanol has 105,000 BTU, Ethanol has 84,000 BTU, and straight gasoline has 114,000 BTU, per gallon. Right off the bat, you are burning less Butanol than Ethanol to achieve the same power of gasoline in the same motor.
Second, Butanol mixed in gasoline does not undergo phase-separation, unlike ethanol. Butanol can be used up to 100% in a gasoline motor without the need to modify the engine. Ethanol is very corrosive and can only be mixed with gasoline up to 85%. Any motor using 100% Ethanol will have required extensive modification and will still not have the power production or fuel economy of it's gasoline equivalent and compared to the same car using 100% n-butanol or iso-butanol.
Iso-butanol is the 102 octane version of normal "n-butanol" with an octane rating of 87. So, I am forced to use Iso-butanol for my V8 motor!