Персона: Власов, Павел Александрович
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Институт лазерных и плазменных технологий
Стратегическая цель Института ЛаПлаз – стать ведущей научной школой и ядром развития инноваций по лазерным, плазменным, радиационным и ускорительным технологиям, с уникальными образовательными программами, востребованными на российском и мировом рынке образовательных услуг.
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18 results
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- ПубликацияТолько метаданныеApplication of the Microwave Interferometry for Diagnostics of Chemical Ionization Reactions in Low-Temperature Plasma(2025) Vlasov, P.; Mikhailov, D.; Smirnov, V.; Arutyunov, V.; Власов, Павел Александрович
- ПубликацияТолько метаданныеAn experimental and kinetic modeling study of the autoignition of syngas mixtures behind reflected shock waves(2024) Vlasov, P. A.; Smirnov, V. N.; Shubin, G. A.; Arutyunov, A. V.; Власов, Павел Александрович
- ПубликацияТолько метаданныеInfluence of Soot Particles on the Gas-Phase Methane Conversion into Synthesis Gas: The Role of H2O and CO2 Additives(2023) Akhunyanov, A. R.; Vlasov, P. A.; Smirnov, V. N.; Arutyunov, A. V.; Власов, Павел Александрович
- ПубликацияТолько метаданныеINFLUENCE OF CO AND CO2 ADDITIVES ON SYNGAS FORMATION DURING STEAM CONVERSION OF METHANE FROM BIOMASS GASIFICATION PRODUCTS(2024) Akhunyanov, A. R.; Vlasov, P. A.; Smirnov, V. N.; Arutyunov, A. V.; Власов, Павел Александрович
- ПубликацияТолько метаданныеKinetic and thermochemical characteristics of the dissociation of Mo(CO)6 and W(CO)6(2019) Smirnov, V. N.; Vlasov, P. A.; Власов, Павел Александрович© 2019 Wiley Periodicals, Inc. The thermal dissociation of gaseous Mo(CO)6 and W(CO)6 in an argon carrier gas, Mo(CO)6 → Mo(CO)5 + CO (1) and W(CO)6 → W(CO)5 + CO (2), is studied over temperature ranges of ∼585–685 K for (1) and ∼690−810 K for (2) at a total gas concentrations of 4 × 10−6 and 4 × 10−5 mol/cm3 by using the shock tube technique in conjunction with absorption spectrophotometry. The measured rate constants are extrapolated to the high-pressure limit by means of a newly developed procedure, with the resultant expressions for the indicated temperature ranges reading as kd1,∞(T),[s−1] = 1016.12 ± 0.68exp[(−148.8 ± 8.1 kJ/mol)/RT] and kd2,∞(T),[s−1] = 1015.93 ± 0.63exp[(−171.7 ± 8.9 kJ/mol)/RT]. Comparison of the high-pressure dissociation rate constants with the published data revealed a considerable discrepancy, a tentative explanation of which is given. Based on the obtained high-pressure dissociation rate constants and the available data on the high-pressure room-temperature rate constants for the reverse reaction of recombination, the first bond dissociation energies for these molecules are evaluated and compared with previous determinations, both theoretical and experimental. The enthalpies of formation of Mo(CO)5 and W(CO)5 are determined: ΔfH°(Mo(CO)5, g, 298.15 K) = −644.1 ± 5.6 kJ/mol and ΔfH°(W(CO)5, g, 298.15 K) = −581.9 ± 6.6 kJ/mol. Based on the enthalpies of formation of Mo(CO)5, W(CO)5, Mo(CO)6, and W(CO)6, and the published molecular parameters of these four species, their thermochemical functions are calculated and presented in the form of NASA seven-term polynomials.
- ПубликацияТолько метаданныеMEASUREMENT AND MODELING OF PROPYLENE IGNITION DELAYS BEHIND REFLECTED SHOCK WAVES(2025) Smirnov, V. N.; Shubin, G. A.; Vlasov, P. A.; Zakharov, A. A.; Власов, Павел Александрович
- ПубликацияТолько метаданныеTwo-route formation of soot nuclei: experimental and modeling evidence(2024) Busillo, E.; Vlasov, P. A.; Smirnov, V. N.; Mikhailov, D. I.; Arutyunov, V. S.; Власов, Павел Александрович
- ПубликацияТолько метаданныеOxygen-Free Reforming of Methane into Synthesis Gas in the Presence of H2, H2O, CO, and CO2 Additives Taking into Account the Formation of Soot Particles(2024) Akhunyanov,A.R.; Vlasov,P.A.; Smirnov,V.N.; Arutyunov,A.V.; Власов, Павел Александрович
- ПубликацияТолько метаданныеDiagnostics of plasma formed during the oxidation of hydrocarbons in shock waves by electric probes with a conductive and dielectric surface(2021) Smirnov, V. N.; Malyshev, N. S.; Mikhailov, D. I.; Agafonov, G. L.; Vlasov, P. A.; Власов, Павел Александрович© 2021 Institute of Physics Publishing. All rights reserved.Experiments were carried out behind shock waves with recoding the electric current flowing through cylindrical probes with a conductive and dielectric surface under a negative (- 9V) potential relative to the walls of the shock tube, with the displacement and total currents measured, respectively. Simultaneously, the signals of chemiluminescent emission from electronically excited OH* (λ = 308 nm) and CH* (λ = 430 nm) radicals were recorded. Experiments were carried out with various lean mixtures of methane and acetylene with oxygen diluted in argon. Preliminary calculations were performed using a theoretical model of an electric probe with a dielectric and conducting surface. Simulations showed that the displacement current on a probe under a negative potential with a dielectric surface is controlled by the chemical ionization rate, the surface area of the probe, and the electric potential. A close correlation was observed between the times of reaching the maximum of the probe current and the maximum of the chemiluminescent emission signals from the electronically excited OH* and CH* radicals.
- ПубликацияТолько метаданныеCOMPARISON OF THE EFFECT OF H2 O AND CO2 ADDITIVES ON THE CONVERSION OF METHANE INTO SYNTHESIS GAS(2023) Akhunyanov, A. R.; Vlasov, P. A.; Smirnov, V. N.; Arutyunov, A. V.; Власов, Павел Александрович