An alternative method for the oxidation of nitrotoluenes is described, using air with a cobalt catalyst in basic medium. Different process parameters were studied to realize the true kinetics of the process. At 28 °C and 16 atm air pressure, 96% selectivity at a conversion level of 40% for p -nitrotoluene was achieved in 18 h using cobalt phthalocyanine. For a given initial concentration of p -nitrotoluene, the reaction was found to be of first-order kinetics.
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Chandalia et al. (1999) studied this question.
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