PATENT

3413.  SOCIÉTÉ INTERNATIONALE DES CARBURANTS ET DES INDUSTRIES CHIMIQUES “BREVETS CONSALVO”.  [Mixture of Hydrogen and Carbon Monoxide.]  Belgian Patent 426,221, Mar. 31, 1938.  Chem. Abs., vol. 34, 1940, p. 2543.

ZnO, CO₂, and H₂O are treated with excess of CaC₂.  The CaC₂ is subsequently regenerated in the same chamber.