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Renewable Hydrogen from Ethanol by Autothermal Reforming

12/22/2007 11:31 PM

G. A. Deluga,1 J. R. Salge,1 L. D. Schmidt,1* X. E. Verykios2 Published this Science 13 February 2004: Vol. 303. no. 5660, pp. 993 – 997 DOI: 10.1126/science.1093045

By putting 103 Proof Ethanol through a rhodium -ceria on a ceramic foam they produced 160% of the ethanol into hydrogen in an exothermic reaction(100% from ethanol and 60% more from the water).

This bypasses the major cost of fuel from ethanol which is water removal. If one can produce 52.5% ethanol in a single distillation, At the time this was published with poor resources I figured the cost at $0.16 per the BTU equivalent of a gallon(U.S.) gas for production.

My question or statement is why was this never developed into a Hydrogen production even by the major players?

Yes they would make less money but the P.R. gain could have been huge.

I have never seen anything else about it. Did I miss some design flaw or other?

2 bits from

Brad

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Guru
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#1

Re: Renewable Hydrogen from Ethanol by Autothermal Reforming

12/23/2007 11:13 PM

If one can produce 52.5% ethanol in a single distillation,

Make that 51.5% for 103 proof.

Brad

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Power-User

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#2

Re: Renewable Hydrogen from Ethanol by Autothermal Reforming

12/24/2007 12:00 PM

hi everyone,

i could not access the info, as i am not a subscriber, but it sounds interesting, and i would like to read more about it, if anyone knows where else the info shows up.

joe

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Guru

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#3

Re: Renewable Hydrogen from Ethanol by Autothermal Reforming

12/24/2007 1:55 PM

When making corn likker, the still is cheap. It's the mash that costs. Right now corn futures on the Chicago Board of Trade are running above $4 per bushel. Since you get about 2.5 gallon of hootch from a bushel, that's already about $1.80 per gallon and you ain't even trucked it anywhere.

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#4
In reply to #3

Re: Renewable Hydrogen from Ethanol by Autothermal Reforming

12/24/2007 3:07 PM

Why waste good corn liquor to make gasohol ? Wouldn't it be better to all get bombed and forget about going anywhere?

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#5

Re: Renewable Hydrogen from Ethanol by Autothermal Reforming

12/24/2007 4:54 PM

The idea is to reform ethanol, on location as needed, into H2 for energy.

The exothermic reaction creates a 700Co energy source to start with.

The residual 160% H2 and mainly CO2 works well for fuel cells and or Internal Combustion Engines.

Ethanol is made from any organic starch or sugar by yeast. Wasting corn squeezings for fuel is alcohol abuse. How many tons of organic waste goes to landfills every year? Digest it into ethanol and use the dredges for compost.

Electricity is hard to store and distribution losses are high. As much as 90% is lost as heat before reaching your house where an incandescent bulb turns 5-10% of whats left into light.

Gas is a whole other political ball of wax. Biodiesel is as good a fuel as any but has some storage issues that will be or have been overcome.

Bio fuels are CO2 neutral.

This technology was available in 2004 and not heard from since. Any barnyard mechanics could make one for hydrogen production from organic trash.

Brad

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