Kinetics of the dehydrogenation of isopropyl and ethyl alcohols over manganous oxide

Abstract

1. A study was made of the kinetics of the dehydrogenation of isopropyl alcohol over manganous oxide. It was shown that this reaction obeys the kinetic Equation 4. 2. The relative adsorption coefficientsz of acetone and hydrogen were determined. In the temperature range 330–400° the relative adsorption coefficient of acetone is close to unity. For hydrogen it varies from 0.10 to 0.36, increasing with rise in temperature from 317° to 345°. 3. From the values found for the relative adsorption coefficients, the thermodynamic quantities ΔF, ΔH and ΔS were determined for the displacement of isopropyl alcohol by acetone and hydrogen. 4. The rate constants and the true activation energy were determined for the dehydrogenation of isopropyl alcohol ( e = 23,650 cal/mole).