2732.     POURBAIX, M.  [Heterogeneous Catalysis of Reactions Between Gases, on Reactions Between Gases and Nongaseous Substances, and on the Poisoning of Catalysts.]  Bull. soc. belge ing. ind., 1934, pp. 783-817; Chem. Abs., vol. 29, 1935, p. 402.

        With the help of the Nernst approximation formula equilibrium calculations are presented for the reaction of O₂, H₂, N₂, Cl₂, and S₂ with metals to form, respectively, oxides, hydrides, nitrides chlorides, and sulfides; the reaction of H₂O, CO₂, and SO₃ with metal oxides to form hydrates, carbonates, and sulfates, respectively; and of O₂ with metal sulfides to form sulfates and oxides, respectively.  Values for the heats of these various reactions are tabulated for many metals.  Similarly, equilibrium calculations are presented for the reduction of metal oxides by H₂, CO, and hydrocarbons; particular attention is paid to the reduction of ZnO.  The poisoning of catalysts is considered from the standpoint of the partial pressures or ratios of partial pressures of various reactants necessary to convert the catalyst into some noncatalytic compound.