165.    BAUKLOH, W., AND HIEBER, G.  [Influence of Various Metals and Metallic Oxides Upon Carbon Monoxide Decomposition.]  Ztschr. anorg. Chem., vol. 226, 1936, pp. 321-332; Chem. Abs., vol. 30, 1936, p. 5139.

                  Reaction 2CO=CO₂+C was studied by passing CO gas over Fe₂O₃, Fe₃O₄, Fe, Co₃O₄, Co, Ni₂O₃, NiO, Ni, Cr₂O₃, Cr, Mn₃O₄, Mn, Al₂O₃, Al, ZnO, Zn, and Cu at 350° to 850°.  The extent of the reaction is measured by weighing the C produced.  The quantity of C separated rises to a maximum and then decreases, the maximum being at 550° for Fe and Fe oxides, at 650° for Co and Co oxides, at 450° for Ni oxides but at 750° for Ni, at 650° for Cr, and at 850° for Mn.  No C separates with Mn₃O₄, Al₂O₃, Zn or ZnO, nor with CuO.  It is concluded that not the oxides but metals produced from them cause the CO decomposition