Finally, chemical engineers and synthetic organic chemists
researched for alternatives. The “greener” method of adipic acid uses a new
generation of catalysts. The starting chemical is cyclohexene and its oxidation
is performed by 30% hydrogen peroxide (H2O2). The catalyst is dissolved in a
special organic solvent (Aliquat 336). The catalyst is a salt of the metal
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Volfram or Tungsten (W) [Tungsten catalysts (Na2WO4 /KHSO4/ Aliquat 336