Reaction Kinetics and Catalysis Letters, Vol.87, No.1, 77-83, 2005
Increasing the propylene epoxidation activity of TS-1 catalysts by hydrothermal treatment of ammonia solution
Treating titanium silicalite (TS-1) with ammonia solution under hydrothermal conditions proves to be an effective post-synthesis modification method for improving TS-1 catalytic activity in propylene epoxidation. Characterizations indicate that the treated TS-1 did not change TS-1 composition and generate more Ti(IV)-superoxide species (g(z)= 2.0265, g(y) = 2.0090, g(x) = 2.0022) when interacting with aqueous H2O2 (30 wt.%) compared with the as-synthesized one.