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Author: Subject: Oxidation of potassium cyante (KOCN) to nitrate?
John paul III
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[*] posted on 2-1-2022 at 08:48
Oxidation of potassium cyante (KOCN) to nitrate?


Is it possible to oxidize KOCN to KNO3 other than with bacteria? I dont mind if it's uneconomical, as long as it can be done in days or hours
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Bedlasky
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[*] posted on 2-1-2022 at 19:09


https://sci-hub.se/https://doi.org/10.1016/0013-4686%2894%29...



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AJKOER
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[*] posted on 3-1-2022 at 14:11


In place of TiO2, one can prepare ZnO photocatalyst, see "Improving photocatalytic activity of ZnO nanorods: A comparison between thermal decomposition of zinc acetate under vacuum and in ambient air" at https://www.sciencedirect.com/science/article/abs/pii/S13698... .

Also consider a dye related photocatalyst like riboflavin (B12), see "Vitamin B12-Catalyzed Dicarbofunctionalization of Bromoalkenes Under Visible Light Irradiation" at https://www.thieme.de/en/thieme-chemistry/synform-news-vitam... that works in visible light.

The mechanic here is actually not that hard. The photocatalyst electron hole (h+) at pH 10 resulted in the .OH radical, which can attack NH3 from NH4+ created from the hydrolysis of CNO-:

h+ + OH- -> .OH

2 H2O + CNO- -> NH4+ + CO3(2-)

NH4+ = H+ + NH3

OH- + H+ = H2O

.OH + NH3 -> .NH2 + H2O

.NH2 + O2 -> Products
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