It is shown by XRD that mixed oxide phases Cu 0.92 Co 2.08 O 4 and Cu 4 MgO 5 are formed along with the oxides CuO, Co 3 O 4 , MgO, and CaO under certain conditions. The positive catalytic effect of individual oxides (CuO and Co 3 O 4 ) and mixed oxide systems (CuO-Cu 0.92 Co 2.08 O 4 , CuO-CaO, and Cu-MgO-Cu 4 MgO 5 ) on the oxidation of diesel soot at 280–580°C is established, and a series of catalytic activities CuO-Cu 0.92 Co 2.08 O 4 > CuO-MgO-Cu 4 MgO 5 > CuO-CaO = CuO > Co 3 O 4 is revealed. Using TEM, the surface micromorphology of crystallites that form oxide systems is characterized. It is found that a catalytic system’s activity increases as the size and surface smoothness of crystallites diminishes. According to data from X-ray photoelectron spectroscopy, a considerable increase in the concentration of O 2 in soot with CuO and Co 3 O 4 additives after its oxidation by oxygen is observed without changing the oxidation state of Cu and Co oxidation. The promoting effect of potassium additives in the form of K 2 CO 3 on the investigated catalytic systems during soot oxidation is revealed.

The morphology of 2D films of fullerene C60 on interfaces has been studied by Brewster angle microscopy and atomic force microscopy. Fullerene C60 tends to aggregate, forming supramolecular structures with a surface area per C60 molecule from 21.6 to 2900 Å2. As the area per C60 molecule decreases, monomolecular clusters gradually transform into multiplayer structures. The introduction of an electrolyte into the system prevents the formation of fullerene globules and favors the formation of more homogeneous films.

The effect of ammonium sulfate on the parameters of surface pressure isotherms (surface pressure and area per fullerene molecule) of 2D films of fullerene C60 on the water/air interface has been studied by the Langmuir method. The possibility of regulation of the structure of 2D fullerene films has been shown. The maximal A 0 value is achieved at an ammonium sulfate concentration of 1 × 10−4 mol/L. Brewster angle microscopy shows that the presence of the electrolyte ensures the formation of a monomolecular 2D film with a lower content of defects.

A comparative study of the oxidative destruction of the monomer face-centered cubic (FCC) lattice and various polymer [dimeric ( D ), orthorhombic ( O ), tetragonal ( T ), and rhombohedral ( R )] phases of C 60 in an atmosphere of oxygen has been performed in the temperature range of 100–500°C with the use of a flow microunit connected to a gas chromatograph. From direct measurements of the content of CO 2 in the gaseous products of destruction, the temperature dependences of oxidation rates are measured for the materials under study. It has been established that, with respect to stability against oxidative destruction, different forms of C 60 may be arranged as follows: the monomer FCC phase of C 60 > D > O > T > R . The reasons behind this tendency are discussed.

Sodium hydroxide catalytically accelerated and P2O5, PCl5, and AlCl3 strongly inhibited oxidation of fullerene C-60 by molecular oxygen. Acid admixtures deposited by vaporization at 573 K on crystalline fullerene increased the temperature of the onset of oxidation by 60-80 K. Hydroxylation of fullerene by dilute H2SO4 With the formation of C-60(OH)(x) had virtually no effect on the rate of its oxidation, whereas hydrogenation with hydrogen at 393 K to C-60(H)(y) sharply decelerated the reaction at temperatures up to 753 K and accelerated it at higher temperatures the apparent activation energy (578 kJ/mol, i.e., close to the dissociation energy of aromatic C-C bonds), however, remained constant.

The influence of compounds of alkali and alkaline-earth metals on the kinetics and composition of the products of oxidation of highly pure graphite GMZ-OSCh in the temperature interval of 350-550 °C in an excess of oxygen was established. In addition to CO 2 , the oxidation products were found to contain polycyclic aromatic hydrocarbons (PAH): diphenyl, naphthalene, phenanthrene, pyrene, chrysene, and perylene. A mechanism is proposed of the oxidative fragmentation of the molecular graphite layers with the participation of metal hydroxides and traces of water via the formation of intermediate polycyclic polycarboxylic acids whose decarboxylation leads to the formation of CO 2 and PAH.

Changes in the functional coating of natural diamond modified by hydrogen, methane, and oxygen have been studied by diffuse reflectance IR spectroscopy at 20-900°C