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Direct synthesis of and in situ oxidative desulfurization of model fuel over Au/Ti-HMS and Au/TS-1 catalysts has been comparatively investigated in water or methanol. Maximum amount (82%) of active species for synthesis was obtained. Au/Ti-HMS and Au/TS-1 exhibited the contrary performances in synthesis as ratio of solvent changed. decomposition and hydrogenation in water was inhibited by the introduction of methanol. Effect of ratio on concentration, conversion and selectivity revealed a relationship between generation and consumption. The highest dibenzothiophene removal rate (83.2%) was obtained over Au/Ti-HMS in methanol at 1.5 of ratio and . But removal of thiophene over Au/TS-1 should be performed in water without heating to obtain a high removal rate (61.3%). Meanwhile, conversion and oxidative desulfurization selectivity of were presented.

bulletin of the korean chemical society

Direct Synthesis of H2O2over Ti-Containing Molecular Sieves Supported Gold Catalysts: A Comparative Study for In-situ-H2O2-ODS of Fuel