Natural Science Forum / Chemistry / Organic Synthesis / July 2003

Urea + H2O2 --> urea peroxyde (NH2-CO-NH2.H2O2) --> No NOx!

PH Z

HNO3 conc + H2SO4 conc + urea --> mononitrourea + dinitrourea
NH2-CO-NH-NO2 --> N2 + NH3 + H2O + NOx + CO2 + NH2-NO2
O2N-NH-CO-NH-NO2 --> idem but easier since much more unstable

Beware! Those are explosive when dry or when in large amounts!
The second one is a shock and heat sensitive exlosive.

PH Z

Not easily.

There are microorganisms that will hydrolise the urea and others that
will oxidise the ammonia to nitrite.  The oxidant is, ultimately,
atmospheric oxygen.  You could set up columns containing bound
bacteria to do this, but you would end up with a dilute solution of
nitrite or nitrate.

The other approach was used by one of the Kaisers, I believe.  This
involves reacting oxygen and nitrogen in an electrical discharge.  I
know this is nitrogen, not urea, but you can get from one to the other
by burning in oxygen.

It looks like you are researching background for a work of fiction
with these odd questions.  Commendations for taking the effort.

its possible to make N2O :)
urea nitric and sulfuric :)

Avy <chris2003@shaw.ca> wrote in message news:<beels6$hea@panther.Gsu.EDU>...

Yes, but the N2O comes from the added nitrate.