1977 年 19 巻 2 号 p. 119-123
The addition reaction of carbon monoxide with ethylene in aqueous hydroiodic acid was investigated under high pressure in the range of 30 to 90kg/cm2. The yield of propionic acid was fairly high and the overall rate equation was:
Namely, the apparent reaction was a pseudo first order with respect to carbon monoxide and ethylene, and the apparent rate constants mere 3.0×10-5, 13.1×10-5 and 26.8×10-5sec-1 at 100, 120 and 140°C, respectively. From these values, K/PCO's calculated were 0.05×10-5, 0.21×10-5 and 0.43×10-5kg-1•cm2•sec-1 comparable to 0.08×10-5, 0.20×10-5 and 0.30×10-5kg-1•cm2•sec-1 obtained in the reaction of carbon monoxide with ethyl iodide. The overall activation energy has been found to be 16.6kcal/mole, as opposed to that of the latter reaction, i. e., 13kcal/mole. From these results the authors concluded that ethyl iodide was formed as an intermediate product in the reaction of carbon monoxide with ethylene.