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Article
Methane oxidative coupling on the Au/La2O3/CaO catalyst in the presence of hydrogen peroxide
Methane oxidative coupling in the presence of the catalyst 1% Au/5% La2O3/CaO and gas-phase initiator hydrogen peroxide at the temperature 700–800°C under normal pressure has been studied. It has been shown that ...
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Article
Effect of quenching on the methane coupling reaction
The effect of reaction mixture quenching on C2 product formation in the methane coupling reaction on La2O3/CaO is disclosed. For reaction with the mixture (vol. %): 54.5 CH4, 9.1 O2 and 36.4 N2 at 973 K, quenchin...
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Article
Oxygen diffusion at surface reduction in catalysts for selective oxidation
The coefficient of oxygen diffusion and the activation energy for diffusion have been measured for the series of oxide catalysts of selective oxidation of organic compounds (Sm-Mg-O, Sm-O; V-P-O, Sn-Sb-O, Sn-B...
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Article
A novel approach to selective oxidation of gaseous hydrocarbons
Selective oxidation of hydrocarbons can be performed by some microorganisms possessing monooxygenase activity. Biocatalytic activities of some strains of methanotrophic bacteria (which utilize methane as a sol...
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Article
Role of oxygen diffusion in catalysts for selective oxidation
The effective coefficients of oxygen diffusion for the series of oxide catalysts for the selective oxidation of organic compound (V−Mo−O, Bi−Mo−O, Ga−Sb−O, Mg−O) have been measured. Diffusion coefficients in d...
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Article
Temperature-programmed reaction of methane with Re- and Pt-containing oxide contacts
Mass-spectrometric data for the products of temperature-programmed reaction of methane with Re- and Pt-containing Al2O3 contacts show that the active sites for methane conversion to benzene over these systems are...
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Article
Study of oxygen diffusion in MgO in the process of surface reduction
We have defined the coefficient of oxygen diffusion in MgO (S spec = 55 m2/g) at 750 ° and 780 °C, the activation energy for diffusion by measuring oxygen diffusion rates at different degrees of surface reduction...
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Article
Mass-spectrometric an EPR studies of methane interaction with Re−Al−O oxide catalysts
The effect of oxidative-reductive pretreatment of Re−Al−O catalysts on their activity in methane aromatization has been established. Paramagnetic centers have been identified and their contribution to the conv...
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Article
Electrocatalytic methane coupling in the absence of oxygen on a high-temperature proton-conducting electrolyte
Electrocatalytic reaction of methane on the La0.6Sr0.4MnO3 (LSM) anode of electrochemical cells based on SrO(CeO2)0.95(YbO1.5)0.05 (SCY) as a high-temperature, proton-conducting solid-electrolyte yields ethane an...
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Article
FT-IR spectroscopic study of cyclohexane adsorption on Ti−Sb−O catalysts
Adsorption of C6H12 and C6D12 at 290–673 K over Ti−Sb−O catalysts has been studied by using infra-red Fourier spectroscopy. Besides a slightly perturbed complex of cyclohexane, one with a strong shift of ν C-H (D...
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Article
Pulse studies of cyclohexane oxidative ammonolysis to adiponitrile over Ti−Sb−O catalysts
The catalytic activities in ammoxidation of cyclohexane to adiponitrile (ADN) was compared with the phase compositions of Ti−Sb−O catalysts. It was shown that the reaction is limited by the step of ADN desorpt...
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Article
IR spectroscopic studies of adiponitrile and ammonia adsorption over Ti−Sb−O catalyst
The adsorption of adiponitrile (ADN), NH3 and ADN+NH3 and NH3+O2 mixtures over Ti−Sb−O catalyst has been studied. In the presence of NH3 ADN is polymerized over the catalyst. NH3 contribution to the polymerizatio...
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Article
IR spectra of methane adsorbed on MgO
Methane adsorbed on MgO is activated to form CH3 fragments stabilized on cations and OH groups.
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Article
Peculiarities in oxidative conversion of methane to C2 hydrocarbons over CaO−CaCl2 catalysts
Experimental data for the oxidative dimerization of methane over CaO−CaCl2 systems indicate that C2 hydrocarbons are formed with the participation of chlorine generated by the catalyst surface under the effect of...
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Article
Electrocatalytic oxidation of cyclohexane by molecular oxygen in non-aqueous solvents in the presence of perchloric acid and perchlorates
Several new electrocatalytic systems are described for the oxidation of cyclohexane by molecular oxygen at room temperature. The solvent is acetonitrile. Perchloric acid and perchlorates are used as supporting...
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Article
Propane dehydrogenation by SO2 in the presence of carbon
The oxidative condensation products of the title reaction are catalytically active, presumably because sulfur enters into their composition.
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Article
Mechanism of catalysis and factors responsible for oxide catalyst activity in deep oxidation reactions
A general scheme for the deep oxidation mechanism on oxide catalysts including stepwise and concerted mechanisms as well as their mutual transformations is suggested. The principal factor responsible for the a...
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Article
Electrocatalytic oxidation of cyclohexane by molecular oxygen in the presence of tertiary alkylammonium salts in non-aqueous solvents
A new electrocatalytic system (acetonitrile, quaternary ammonium salt, graphite cathode) for oxidizing cyclohexane to cyclohexanol by molecular oxygen at room temperature has been discovered.
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Article
Some principles of choosing catalysts for selective conversions of organic compounds at C−H bonds
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Article
Contribution of one-electron acceptor centers to oxidative dimerization of methane
The ESR method was used to identify paramagnetic centers in the Pb−Mg oxide system and to study its catalytic properties in oxidative dimerization of methane. Reaction rate is shown to correlate well with the ...
