INVESTIGATION OF OXIDE NICKEL-CEMENT AND COPPER-CEMENT CATALYSTS IN THE THERMOCATALYTIC PROCESSING OF RESIDUAL OIL

An investigation has been made of the thermocatalytic processing of re sidual oil on oxide nickel- and copper-cement catalysts in the 480-650 degrees C temperature range. The optimum process conditions have been found. The activity of a nickel oxide-cement catalyst has been studie d The maximum yield of light fractions (gasoline and diesel) amounts t o 35.1% at a temperature of 500 degrees C with a mass feed rate of the feedstock v of 2.0 hr(-1). It has been shown that the activity of a n ickel oxide-cement catalyst is higher than that of a copper-cement-con taining catalyst. The laws governing the volumetric and surface proper ties of nickel- and copper-cement catalysts during the thermocatalytic processing of residual oil have been established. Stage I of the proc ess (cracking of the feestock) leads to the reduction of nickel and co pper oxides respectively to metallic Ni and Cu. Stage II (gasification owing to the oxidation of metallic Ni and Cu) forms solid solutions N iO . Al2O3 and CuO . Al2O3. (C) 1997 Elsevier Science Ltd.