Hi Bruce
Here's a link with info about hydrazine.
Ken
http://www.asi.org/adb/04/03/09/hydrazine-info.html
...Chemical Properties
Hydrazine is a powerful reducing agent. It is
attractive as a reducing agent due to its high
hydrogen content, and friendly by-product of nitrogen.
It will reduce a number of important metal salts to
the element, including silver and nickel.
Producing 148.6 kcal/mol in its oxidation reaction,
hydrazine has an impressive affininty for oxygen:
N2H4 + O2 = N2 + 2 H2O
It is used in this capacity to remove oxygen from
boiler systems, and as an additive to many substances
to prevent oxidative deterioration...
--- Bruce Crowder [EMAIL PROTECTED] wrote:
Hi Ken,
Any idea what the energy content is of a kg of
hydrazine would be?
-Bruce
*~*~*~*~*~*~*~*~*
Date: Tue, 10 Feb 2004 02:28:28 -0800 (PST)
From: Ken Gotberg [EMAIL PROTECTED]
Subject: Re: Solar to Noncarbon Fuels Other Than H2
Hi Murdoch, Greg, and April
Hydrazine is a liquid at normal temps (mp 2C, bp
113C)
and while no longer used as a rocket booster fuel,
it
is used for positioning/microcontroller jets. The
technology is fairly developed now and could make
sense as an earthbound vehicle fuel. Nitrogen
compounds are used in explosives due to high
energy/power densities and Im not sure how big a
potential problem this is, perhaps on the same order
as H2 without the storage problems. People
developing
rockets face the same problems as, more so, trying
to
get the most useful energy out of a fuel with the
least amount of mass. Noncarbon fuel alternatives
at
this juncture are in electric storage (batteries,
ultracapacitors,?), mechanical storage in things
like
flywheels, and various fuel cells. Probably others
that list members may know about.
One more possibility to look at and N2 is available
everywhere, ~800,000 ppm in the atmosphere versus
~350
ppm for CO2 used in biofuels. There are other
nitrogen fuels besides hydrazine that may also be
potential candidates. Heres a link to rocket fuels
And about hydrazine
http://www.astronautix.com/props/hydazine.htm
Fuel: Hydrazine. Fuel Density: 1.01 g/cc. Fuel
Freezing Point: 2.00 deg C. Fuel Boiling Point:
113.00
deg C.
Hydrazine (N2H4) found early use as a fuel, but it
was
quickly replaced by UDMH. It is still used as a
monopropellant for satellite station-keeping motors.
Hydrazine marketed for rocket propellant contains a
minimum of 97 per cent N2H4, the other constituent
being primarily water. Hydrazine is a clear,
water-white, hygroscopic liquid. The solid is white.
Hydrazine a toxic, flammable caustic liquid and a
strong reducing agent. Its odour is similar that of
ammonia, though less strong. It is slightly soluble
in
ammonia and methyl-amine. It is soluble in water,
methanol, ethanol, UDMH, and ethylenediamine.
Hydrazine is manufactured by the Raschig process,
which involves the oxidation of ammonia to
chloramine,
either indirectly with aqueous sodium hypochlorite
or
directly with chlorine, and subsequent reaction of
chloramine with excess ammonia. Raw materials
include
caustic, ammonia, and chlorine; these are
high-tonnage, heavy chemicals. The cost of anhydrous
hydrazine in drum quantities in 1959 was $ 7.00 per
kg. The projected price, based on large-scale
commercial production, was expected to be $ 1.00 per
kg. Due to environmental regulations, by 1990 NASA
was
paying $ 17.00 per kg.
Best regards,
Ken
__
Do you Yahoo!?
Yahoo! Finance: Get your refund fast by filing online.
http://taxes.yahoo.com/filing.html
Biofuel at Journey to Forever:
http://journeytoforever.org/biofuel.html
Biofuels list archives:
http://archive.nnytech.net/index.php?list=biofuel
Please do NOT send Unsubscribe messages to the list address.
To unsubscribe, send an email to:
[EMAIL PROTECTED]
Yahoo! Groups Links
* To visit your group on the web, go to:
http://groups.yahoo.com/group/biofuel/
* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]
* Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
