Essay on Synthesis And Recrystallization Of Adipic Acid
The current experiment sought to prepare 1,6-hexanedioic acid (adipic acid) by catalytic oxidation of cyclohexene in the presence of a phase-transfer catalyst (Aliquat 336), using sodium tungstate as a catalyst and hydrogen peroxide as an oxidant.
The carbon-carbon double bond of alkenes represents a site that has a high electron intensity. This site is susceptible to oxidation. Depending on the conditions or reagents used to initiate the oxidation of alkenes, various products can be obtained. With relative mild oxidation, it is only the pi bond of an alkene that is cleaved resulting in the production of 1,2-diols or epoxides. However, when there is more vigorous oxidation, the carbon-carbon double bond is completely cleaved resulting in the formation of carbonyl compounds. The compound produced can give specific products depending on the nature of the oxidant and substitution pattern on the alkene.
On the one hand, in most laboratory procedures, production of adipic acid is mainly achieved using hot basic potassium permanganate, a harsh oxidizer that produces large amounts of manganite oxide waste. On the other hand, nitric oxide is used in industrial production of adipic acid and being a strong oxidizer it possesses potential safety hazards and environmental risks. The process also releases nitric oxide which is a greenhouse gas that contributes to global warming and ozone depletion.