Hydrogen peroxide decomposition catalyzed by Ti-MWW in a fixed-bed reactor

H₂O₂ can be decomposed severely at low H₂O₂ weight hourly space velocity (WHSV) in the system of H₂O₂/Ti-MWW in a fixed-bed reactor. It was found that the tetrahedrally coordinated Ti in the titanosilicate molecular sieve was the main reason to arise H₂O₂ decomposition as well as the effect of acid centers of the catalyst. The octahedral Ti and anatase in the catalyst had a weaker influence on the decomposition of H₂O₂ than the tetrahedrally coordinated Ti. These results could give a guide to design highly effective titanosilicate molecular sieves eliminating the factors that caused the invalid decomposition of H₂O₂. H₂O₂ was the oxygen donor in the reaction. These results also improved the conversion of substrate. The study of H₂O₂ decomposition in a fixed-bed reactor provided a new way to examine the catalytic activity of titanosilicate molecular sieves.