901.    ---------------[FESTER, G., AND BRUDE, G.]  [Reactions of Carbon Monoxide.]  Brennstoff-Chem., vol. 5, 1924, pp. 49-53; Chem. Abs., vol. 18, 1924, p. 2480.

     During various attempts to reduce CO by H2 catalytically, it has been observed that at low temperatures appreciable amounts of CO2 are formed.  A study is made of the formation of CO2 from CO-H2 mixtures and CO alone at temperatures 35-240 with Pd precipitated on active C and on silica gel as catalysts.  2 reactions were considered:  2CO=CO2+C and CO+H2O=CO2+H2.  Both were found to take place to a limited extent.  Concentrations of 1 to 55% CO2 in exit gases were obtained, the higher results being obtained at 240, corresponding to 71% of the pure CO used.  With CO:H2 mixtures 1:1 the H2 appeared to have no reducing action, presumably because of strong preferential adsorption of CO by active C and silica gel.  Moist CO gave higher concentrations of CO2, indicating that CO+H2O→CO2+H2 took place.  Preferential oxidation of CO in mixtures of H2, O2, and small amounts of CO with V2O5 as catalyst was tried without success, although with equal concentrations of CO and H2, 2 times as much CO as H2 was oxidized.

      FETTERLY, L. C.  See abs. 2441, 2442.

      FIELD, J. H.  See abs. 647, 648.