In the oxidation of primary amines over titanium (TS-1) and vanadium (VS-1) silicalites, the solvent plays a significant role in determining the conversion of amine as well as product selectivity. When vanadium silicalite was used as a catalyst, the selectivity for oxime was low (20-40%) and one of the major products was imine (30-55%). However, over titanium silicalite, imines were formed only in the presence of chloroform. Chloroform also favors the formation of nitro-alkanes over both titanium and vanadium silicalites.
展开▼
