Re: Bright green gas

Posted by Fish'n Jim On 2019/5/14 14:26:30

Cu oxidation takes EtOH to acid ETOOH (acetic -aka vinegar) which typically is not colored. I suspect it's a CuO complex that's formed - maybe carbonyl origins - carboxylate. A UV/vis scan could tell. These cluster complexes absorb in the low end of the spectrum, 200-400 as well as the vis(green in this case). Dealt with many trying to decolorize stuff with low level metal contamination. I doubt it makes a difference to the combustion and it may clean up easily as no H2O.
Totally, not what my eyeballs expected but never is, that's why you do experiments.