LIQUID-PHASE AEROBIC OXIDATION OF PETROLEUM HYDROCARBONS IN THE CATALYTIC PRESENCE OF NANOSIZED COMPLEXES
V.M. Abbasov, L.M. Afandiyeva, L.H. Nuriyev, F.N. Seyidahmadova, B.M. Aliyev, E.Sh. Abdullayev
Abstract: Liquid-phase aerobic oxidation of hydrocarbons naphthenic-paraffinic concentrate 217-349оС of Azerbaijan oils blend diesel fraction in the presence of pentanuclear complexes of Cr, Co, Ni and their mixtures with Zn, Cr salts of natural petroleum acids (MeNPA) has been conducted. Dimensions of crystal structure of catalytic complexes was measured by diffractometer NONIUS CAD4 and calculated with aid of NRCVAX13 program. The surface of the crystals was analyzed by atomic-force (scanning probe type) microscope SZLM. There have been studied the dependence of yield of petroleum acids on the composition of the catalized. The largest yields of synthetic petroleum acids (SPA) are observed for the catalysts which was taken as mixture. The varying ratio of MeNPA:ComplexMe (Me-metal) significantly affects the performance of the process. Combined use of the catalysts leads to the synergetic effect. The most optimal ratio of catalysts is established as ZnNPA+comp.Co = 2 : 1 (0.1 + 0.05wt.%) and CrNPA+comp.Co= 2 : 1( 0.1 + 0.05wt.%), with yields 22.2% and 23.4% of SPA. Along with petroleum acids the SPA contain also fatty acids of isostructure. The results obtained are recommended for realization in an industrial scale for SPA production.
Keywords: Diesel fraction, petroleum hydrocarbons, liquid-phase oxidation, catalysts of oxidation, synthetic petroleum acids.
Pages: 90 – 96 | Full PDF Paper