The kinetics of selective hydration of ethylene-and propylene oxides in concentrated aqueous solutions is studied during homogeneous catalysis by sodium bicarbonate. The mathematical model of the process with determined parameters adequately describing the rate of the reaction and products distribution is developed.

The ethylene oxide hydration process in a catalytic fixed bed tube reactor was studied. A cross-linked styrene-divinylbenzene anion-exchange resin in the HCO 3 -/CO 3 2--form was used as a catalyst. The deactivation and swelling of the catalyst during the process were detected. The mathematical model of the reactor with determined parameters adequately describing the rate of the reaction, product distribution and catalyst deactivation and swelling has been developed.

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Die Hydrolyse von Äthylenoxid in wäßrigen Lösungen von Naformiat, Na‐acetat oder K‐oxalat bei 20‐25°C liefert quantitativ Monoäthylenglykol; Polyäthylenglykole entstehen nur als Produkte von parallel verlaufenden alkalischen oder nichtkatalysierten Hydrolysereaktionen.