Authors:Anna Fajdek, Agnieszka Wróblewska, and Eugeniusz Milchert
/H 2 O 2 1:1–5:1, solvent concentration (methanol) of 5–90 wt%, catalyst content of 0–5.0 wt%, reaction time of 5–300 min and the intensity of stirring 0–500 rpm.
In order to calculate the mass balance for the syntheses performed, the post
Authors:Maria Kulawska, Henryk Moroz, and Aleksandra Kasprzyk
of initial mole ratios of alcohol to phthalic anhydride, b = c 0 ALC / c 0 PHT , equal to 3:1, 5:1, 10:1. The effect of temperature on the reaction rate was determined at b = 5:1, in the range of temperatures 413–453 K. The concentration of
Authors:Natasza Krawczyk, Stanisław Karski, and Izabela Witońska
bubbled through at 0.2 dm 3 /min. No rise in the temperature due to the heat of the reaction was observed in any of the runs since the reactor was operated with low concentration of nitrate ions ( 100 mg/dm 3 NO 3 − ). No pressure control was required as
compound/H 2 O 2 = 1:1, methanol concentration 40 wt%, catalyst concentration 3 wt%, the reaction time 2 h and intensity of stirring 500 rpm. The process was carried out in a glass vial with the capacity of 12 cm 3 equipped with a rubber septum and a
Authors:Joanna Wiśniewska, Grzegorz Wrzeszcz, Stanisław Koter, and Tomasz Ligor
direct one-electron transfer between many organic compounds in noncatalytic and catalytic processes, the relatively low oxidation rate and the strong influence of the concentration of sulfate(VI) and the H + ion concentrations on both the rate of
Authors:Magdalena Janus, Ewelina Kusiak-Nejman, and Antoni Waldemar Morawski
temperatures (20, 30, 40, 50, and 60 °C) for 90 min (samples were taken every 10 min). 0.02 g of the photocatalyst was added to 100 mL of terephthalic acid solution with a concentration of 830 mg/L (5 × 10 −4 M). The • OH radicals are generated by means of UV
of NaOH solutions of suitable concentrations and assayed. To each sample, 1.0 mL of the internal standard (theophylline 0.1 mg mL −1 ) was added.
HPLC chromatograms of: solution of doripenem at t