2763.     RACINE, J.  [Study of the Reducing Properties of Methane.]  Compt. rend., vol. 220, 1945, pp. 823-825; Chem. Abs., vol. 40, 1946, p. 3672.

        Reduction of some metallic oxides by CH₄ was studied at temperatures up to 1,100°.  The following were reduced:  CuO, ZnO, CdO, HgO, PbO₂, Cr₂O₃, MoO₃, NiO, WO₃.  The following were not reduced:  MgO, CaO, Al₂O₃.  MnO is converted to a carbide at 800°.  C₂H₂ appears at 825°.  Fe₂O₃ is reduced to an unidentified oxide at 400°, and to Fe at 800°; a carbide is formed at 1,050°.  C₂H₂ is formed at 800°; C is deposited at 1,000°.  Co₂O₃ is reduced to CoO at 450°, and to Co at 800°; a carbide is formed at 1,000°.