A convenient method for improving the conversion and selectivity of aniline to azoxybenzene by adjusting the ratio of silicon to titanium of TS-1 is reported. Over TS-1 (80), aryl anilines are transformed into the corresponding azoxybenzenes in good yields with H 2 O 2 as the oxidant. The effect of different reaction parameters like molar ratio of H 2 O 2 to aniline, solvent and the activity in catalyst recycling has been studied.
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