Preparation of N-oxidized pyridine catalyzed by TS-1 zeolite catalyst

N-oxidized pyridine was synthesized from the oxidation of pyridine with TS-1 as catalyst. The influences of catalyst amount, the amount of H₂O₂, reaction temperature, and reaction time on conversion and selectivity were investigated. The optimal parameters for the oxidation of pyridine were obtained from the experimental results as follows: catalyst/pyridine= 1 : 10 (mass), pyridine / H₂O₂ = 1 : 2 (mol), optimal reaction temperature of 80°C with stirring and reaction time of 6 h. Under the optimal experimental condition, the highest conversion and selectivity were obtained as 92% and 97%, respectively.