3884.  WEBB, G. M., AND MOEHL, R. W. Catalyst. United States Patent Appl. 584,728, no date. Official Gaz., vol. 665, 1952, p. 1313: Chem. Abs., vol. 47, 1953, p. 11603.

Shaped catalysts of good physical strength, useful in hydrogenation-dehydrogenation reactions, are produced by forming an aqueous slurry of a carrier (kieselguhr, clay, or silica gel) with at least 1 H₂O-soluble metal salt (NiNO₃ or NiSO₄) and at least 1 H₂O-soluble metal salt whose metal in the oxide form is difficult to reduce (Cr, Al, Mg, or Ca nitrate or sulfate), precipitating the metal carbonates with (NH₄)₂CO₃, separating and drying at 100°-250° F., and calcining at 300°-800° F. The calcined material is mixed with 5 percent by wt. of soap and formed into pellets which are reduced in a H₂ atmosphere at 575°-750° F.