Selective hydrogenation catalyst and process for producing same

Claim 1

A NICKEL-CHROME CATALYST SUITABLE UPON REDUCTION FOR THE SELECTIVE HYDROGENATION OF ACETYLENIC COMPOUNDS IN THE PRESENCE OF OLEFINS AND EXHIBITING EXCELLENT RESISTANCE TO HIGH TEMPERATURE STEAMING, SAID CATALYST COMPRISING A CALCINED MIXTURE OF NICKEL OXIDE AND CHROMIC OXIDE SUPPORTED UPON A CARRIER, THE AMOUNT OF NICKEL IN THE CATALYST BEING LESS THAN ONE PERCENT BY WEIGHT, THE CALCINED MIXTURE OF OXIDES CONTAINING HEXAVALENT CHROMIUM IN AN AMOUNT LESS THAN ONE PERCENT BY WEIGHT OF THE MIXTURE, THE CALCINED MIXTURE OF OXIDES CONSTITUTING BETWEEN ABOUT 2% AND ABOUT 15% BY WEIGHT OF THE CATALYST, AND SAID CARRIER BEING SELECTED FROM THE GROUP CONSISTING OF: (1) HIGH GRADE ALUMINIA CONTAINING LESS THAN 0.05% SODIUM ON A NA2O BASIS AND (2) CARRIER MIXTURES COMPRISING AT LEAST 20% HYDRAULIC CEMENT AND AT LEAST 10% CLAY.