Abstract: A catalyst and process are described for hydrofining petroleum wax comprising contacting the wax with hydrogen in the presence of a catalyst comprising at least one metal hydrogenating component on a porous alumina/silica carrier containing from about 0.2 to 5 wt.% of an alkali metal component, the catalyst having a specific surface area of about 200 to 300 m.sup.2 /g and being further characterized in that (a) the volume of pores having a diameter in the range of 60 to 150 A is greater than 80% of the volume of pores having a diameter in the range of 0 to 150 A and (b) the volume of pores having a diameter in the range of 0 to 600 A is in the range of about 0.45 to 0.60 ml/g.

Abstract: A method for reactivating the catalyst used in the mild hydrotreating of petroleum crude scale wax comprises contacting the catalyst with the feedstream at a temperature in excess of the normal operating temperature for the particular feedstream for a time sufficient to reactivate the catalyst and produce effluent having satisfactory color and stability characteristics. Operation at a temperature in excess of the normal operating temperature may follow conventional air-stream catalyst regeneration.

Abstract: This invention relates to isocyanated polyvalent metal salts of oxidized non-benzenoid hydrocarbon waxes; and to uses thereof, particularly in carbon paper inks.

Abstract: Aromatic hydrocarbons are hydrogenated in the presence of a catalyst obtained by admixing an aluminous carrier with a group VIII noble metal compound and a reducing agent of the formula Al X.sub.y R.sub.3-y where y is 1, 3/2 or 2, X is halogen and R is a monovalent hydrocarbon radical.