Doktor


Doktor : Also spelled Doctor. A process for deodorizing oils by converting trace mercaptans to disulfides by the use of alkaline sodium plumbite and sulfur. The reactions are: 2RSH + Na2PbO2 + Pb(RS)2 + 2NaOH; Pb(RS)2 + S+ R2S2 + PbS. The spent solution is regenerated by blowing air through it: PbS + 2O2 + 4NaOH + Na2PbO2 + Na2SO4 + 2H2O. No longer used as a manufacturing process, but still used as a qualitative test for mercaptans in petroleum fractions. (Check source for accuracy of chemical formula)
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