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H2O2 formation rates of reactions of H2 and O2 in a semibatch reactor using methanol, water, acetonitrile, and acetone as solvents (4.8 kPa H2, 4.8 kPa O2, 80 cm3 solvent, 100 mg of 2 nm Au–TiO2, 298 K). The dashed line shows the detection limit of the reactor. Figure S14 shows the transient concentration profiles fitted for these data.
