AEROBIC OXIDATION OF A DIESEL PARAFFINIC-NAPHTHENIC FRACTION IN THE PRESENCE OF Co ASSISTED Fe-CONTAINING MULTI-WALLED CARBON NANOTUBES

Liquid-phase aerobic oxidation of hydrocarbons to produce valuable oxygen-containing compounds is one of the most important industrial processes. Traditionally, these processes are carried out using stoichiometric amounts of various toxic oxidants and homogeneous catalytically active salts and transition metal complexes, which leads to the formation of a huge amount of corrosive and harmful waste. Recently, due to their unprecedented properties, carbon nanotubes (CNT) have found wide application as catalysts and catalytic support in various, including oxidative, chemical processes. Of particular interest is the study of oxidation of mixed natural hydrocarbons, in particular, petroleum fractions. The new results obtained make it possible to accomplish necessary corrections in corresponding industrial petrochemical oxidation processes, and, on the other hand, to make some correlations with the natural oxidation of oil systems in the process of their metamorphic transformation in geological strata. This paper describes the results of the paraffin-naphthenic diesel fuel fraction aerobic oxidation in the presence of multi-walled carbon nanotubes (MWCNTs) containing inclusions of iron and cobalt atoms and compounds (M=Fe-Co@MWCNT). Some kinetic and conversion parameters of the process, as well as degree of catalytic activity of metallic CNT were determined. The redox ionic-radical mechanism of the catalytic action of M@MWCNTs was confirmed, which is very important for creating a plausible version, which is still actively discussed by researchers