Abstract: A catalyst for hydrogenolysis of N,N-dimethyl-3,5-ditert.butyl-4-hydroxybenzylamine which comprises an alloy of nickel, aluminum, chromium, molybdenum and palladium. The components are contained in said alloy in the following proportions, percent by weight:Nickel -- 39.0 to 47.7;Chromium -- 0.3 to 2.0;Molybdenum -- 0.5 to 4.0;Palladium -- 0.01 to 0.20;Aluminum -- the balance.The catalyst for hydrogenolysis of N,N-dimethyl-3,5-ditert.butyl-4-hydroxybenzylamine according to the present invention makes it possible to reduce the process duration and lower the content of impurities of stilbenequinone in the final product of the hydrogenolysis (agidol).

Abstract: The method of dimerization of alpha-olefins consists in mixing at least one alpha-olefin with a two-component catalyst consisting of organic compounds of titanium, having the general formula Ti (OR).sub.4, and of aluminum, having the general formula AlR.sub.3, where R is an alkyl having from 1 to 6 carbon atoms, or an aryl, in a medium of a hydrocarbon solvent, at a temperature of 0.degree. to 100.degree. C and a pressure from 1 to 30 atm. Said constituents of the catalyst are pretreated with an ethylene-hydrogen mixture, containing from 5 to 95 percent by volume of hydrogen, at a temperature of from 0.degree. to 100.degree. C and a pressure of the ethylene-hydrogen mixture from 0.2 to 15 atm., for a period of time from 1 to 120 minutes. The method ensures high yields of butene-1 and hexenes, and high selectivity of the catalyst to said products. The butene-1 content of the butane mixture obtained in the process of ethylene dimerization is as high as 99 percent.