627.    CORNUAULT, P.  [Adsorbed Phase on Catalysts.]  Jour. Chim. Phys., vol. 47, 1950, pp. 157-164; Chem. Abs., vol. 44, 1950, p. 8213.

     Kinetics of desorption of H₂, CO, CO₂, and CH₄ from a Ni-Al-Mn-kieselguhr Fischer-Tropsch catalyst reduced in H₂ at 475° was measured on a sample (I) sealed off at 450° immediately after reduction, on one (II) cooled from 475° to 175° and maintained 4 hr. in H₂ at this temperature, and on one (III) kept 113 hr. in H₂ at 175°.  Evolution of gas from (II) with increase of temperature is very similar to that from (III).  The energy of activation of desorption up to 200° is about 19 keal.  On both samples (II) and (I), the energy of activation of desorption is about 29 keal. at 450° Evolved gas contained 73-100% H₂; the other components were small amounts of CO₂, CO, and CH₄ coming from undecomposed carbonates of the original catalyst.  Composition of the gas evolved at each temperature is given for all samples.

     CORRELLI, R.  See abs. 1135.

     CORRIGAN, T. E.  See abs. 144a.