[AR] Re: ammonia borane
- From: Henry Spencer <hspencer@xxxxxxxxxxxxx>
- To: "arocket@xxxxxxxxxxxxx" <arocket@xxxxxxxxxxxxx>
- Date: Mon, 1 Mar 2021 15:34:45 -0500 (EST)
On Mon, 1 Mar 2021, JOHN HALPENNY wrote:
If the [furfuryl] alcohol comes from oats, do you get your brownie
points for a "renewable" fuel?
Perhaps not quite as many brownie points as you'd hope. :-) What comes
from acid dehydration of oat hulls -- or many other types of agricultural
waste, like corn cobs or sugar-cane fiber -- is furfural (furfuryl
aldehyde), which then has to be hydrogenated to make furfuryl alcohol.
The question is where the added hydrogen comes from.
If it's coming in as H2 gas, it's from petroleum. :-( But hydrogenation
of organics is often done with "transfer hydrogenation", in which two
hydrogens are stolen from some other organic molecule, because GH2 is
expensive and a pain to work with. I don't know what's usually done for
this case.
Henry
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