The kinetics of absorption of oxygen by n‐butyraldehyde dissolved in n‐butyric acid, in the range of concentrations up to 3·1 × 10−3 gmole/cm3 (25 wt.‐%), in the presence of manganese acetate, was studied in stirred cells and a bubble column. It was found that diffusion of oxygen is important. The reaction was found to be first‐order in oxygen and second‐order with respect to the aldehyde. The overall third‐order reaction rate constant was found to be about 4 × 106 (cm3/gmole)2 sec−1 at 20°. The effect of the catalysts, cobaltous acetate and (cobaltous + 4 cupric) acetates, on the specific rates of absorption of oxygen was also studied. Manganese acetate was found to be the best catalyst.
The kinetics of absorption of oxygen by 2‐ethylhexaldehyde dissolved in 2‐ethylhexanoic acid at concentrations up to 1.38 × 10−3 mole/cm3 (20 wt.‐%), in the presence of manganese acetate, was studied in a stirred cell and in bubble and packed bubble columns. Diffusion of oxygen was found to play a major role. The reaction was first order in oxygen and second order with respect to the aldehyde, and the overall third‐order rate constant was found to be 2.98 × 107 cm6 mole−2 sec−1 at 30°. The effect of cobaltous acetate on the specific rate of absorption of oxygen was also studied and manganese acetate was found to be the better catalyst.
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