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O2(b1 Σg+) removal by I2 and NO at temperatures of 297–750 K. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2019.136774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Starik AM, Loukhovitski BI, Sharipov AS, Titova NS. Physics and chemistry of the influence of excited molecules on combustion enhancement. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2015; 373:rsta.2014.0341. [PMID: 26170425 PMCID: PMC4528432 DOI: 10.1098/rsta.2014.0341] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 05/06/2015] [Indexed: 06/04/2023]
Abstract
The paper addresses detailed analysis of kinetic processes in the H(2)-O(2), CO-O(2) and CH(4)-O(2)-reactive systems upon the presence of singlet oxygen molecules O(2)(a(1)Δg) and [Formula: see text] and the influence of the activation of oxygen molecules in electric discharge on the acceleration of ignition in the H(2)-O(2) and CH(4)-O(2) mixtures. The possibility of the intensification of CO oxidation due to excitation of O(2) and N(2) molecule vibrations and generation of singlet oxygen molecules is also considered. It is shown that the effect of accelerating the ignition strongly depends on the reduced electric field and, as a consequence, on the composition of discharge plasma as well as on the features of chain mechanism development in oxy-fuel systems. It is revealed that the most effective approach for the intensification of CO oxidation both in the moist air and in the products of hydrocarbon combustion in air is the generation of O(2)(a(1)Δg) molecules by electric discharge. Computations showed that the presence of 1% O(2)(a(1)Δg) in the total oxygen allowed one to convert CO to CO(2) even at the temperature T=850-900 K in the time of 10(-2) s. The excitation of O(2) and N(2) molecule vibrations is less effective for such a conversion.
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Affiliation(s)
- A M Starik
- Scientific Educational Centre 'Physical and Chemical Kinetics and Combustion', Central Institute of Aviation Motors, Moscow 111116, Russia
| | - B I Loukhovitski
- Scientific Educational Centre 'Physical and Chemical Kinetics and Combustion', Central Institute of Aviation Motors, Moscow 111116, Russia
| | - A S Sharipov
- Scientific Educational Centre 'Physical and Chemical Kinetics and Combustion', Central Institute of Aviation Motors, Moscow 111116, Russia
| | - N S Titova
- Scientific Educational Centre 'Physical and Chemical Kinetics and Combustion', Central Institute of Aviation Motors, Moscow 111116, Russia
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Deminskii MA, Chernysheva IV, Umanskii SY, Strelkova MI, Baranov AE, Kochetov IV, Napartovich AP, Sommerer T, Saddoughi S, Herbon J, Potapkin BV. Low-temperature ignition of methane-air mixtures under the action of nonequilibrium plasma. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2013. [DOI: 10.1134/s1990793113040040] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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An abnormal phenomenon on O2(a1Δ) deactivation by deuterated alcohols. Chem Phys Lett 2013. [DOI: 10.1016/j.cplett.2013.07.064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Wang J, Leng J, Yang H, Sha G, Zhang C. Study on gas phase collisional deactivation of O2(a1Δg) by alkanes and alkenes. J Chem Phys 2013; 138:024320. [DOI: 10.1063/1.4774402] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Du S, Leng J, Wang J, Yang H, Sha G, Zhang C. A quasi-static method for measuring the deactivation rate constants of O2(a1Δg) in gas phase by IR radiation decay. Chem Phys Lett 2011. [DOI: 10.1016/j.cplett.2011.01.078] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Gillis KA, Havey DK, Hodges JT. Standard photoacoustic spectrometer: model and validation using O2 A-band spectra. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2010; 81:064902. [PMID: 20590262 DOI: 10.1063/1.3436660] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
We model and measure the absolute response of an intensity-modulated photoacoustic spectrometer comprising a 10 cm long resonator and having a Q-factor of approximately 30. We present a detailed theoretical analysis of the system and predict its response as a function of gas properties, resonance frequency, and sample energy transfer relaxation rates. We use a low-power continuous wave laser to probe O(2) A-band absorption transitions using atmospheric, humidified air as the sample gas to calibrate the system. This approach provides a convenient and well-characterized method for calibrating the absolute response of the system provided that water-vapor-mediated relaxation effects are properly taken into account. We show that for photoacoustic spectroscopy (PAS) of the O(2) A-band, the maximum conversion efficiency of absorbed photon energy to acoustic energy is approximately 40% and is limited by finite collision-induced relaxation rates between the two lowest-lying excited electronic states of O(2). PAS also shows great potential for high-resolution line shape measurements: calculated and experimental values for the PAS system response differ by about 1%.
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Affiliation(s)
- K A Gillis
- Process Measurements Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA.
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Du K, Krogh O, Setser DW. Generation of high O2 (a1Δg) concentrations in O2/H2 mixtures. INT J CHEM KINET 2006. [DOI: 10.1002/kin.20128] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Affiliation(s)
- Angelo J Alfano
- ERC, Inc. and Propulsion Sciences and Advanced Concepts Division, Air Force Research Laboratory, Edwards Air Force Base, CA 93524, USA
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Jirásek V, Špalek O, Kodymová J, Čenský M. Chemical generation of atomic iodine for chemical oxygen–iodine laser. I. Modelling of reaction systems. Chem Phys 2001. [DOI: 10.1016/s0301-0104(01)00358-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Hewett KB, Manke GC, Setser DW, Brewood G. Quenching Rate Constants of NCl(aΔ) at Room Temperature. J Phys Chem A 2000. [DOI: 10.1021/jp9921203] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Kevin B. Hewett
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506
| | - G. C. Manke
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506
| | - D. W. Setser
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506
| | - G. Brewood
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506
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Thorn RP, Nicovich JM, Cronkhite JM, Wang S, Wine PH. Kinetics of the reaction of O(3P) with CF3NO. INT J CHEM KINET 1995. [DOI: 10.1002/kin.550270408] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Thorn RP, Cronkhite JM, Nicovich JM, Wine PH. Laser flash photolysis studies of radical–radical reaction kinetics: The O(3PJ)+BrO reaction. J Chem Phys 1995. [DOI: 10.1063/1.468541] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Surface deactivation efficiencies for O2(1Δ)(g) on a range of materials. I. Pyrex, nickel, copper, nickel-copper alloy and inconel. Chem Phys 1993. [DOI: 10.1016/0301-0104(93)80083-l] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Perram G, Determan D, Dorian J, Lowe B, Thompson T. Radial diffusion between coaxial cylinders and surface deactivation of O2 (b 1Σ+g). Chem Phys 1992. [DOI: 10.1016/0301-0104(92)85019-q] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Fiedler E, Hack W. The reaction of 2,5-dimethylpyrrole with O2(a1?g) in the gas phase. INT J CHEM KINET 1991. [DOI: 10.1002/kin.550231007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Melton DW, Lowe BF, Perram GP, Roh WB. Singlet molecular oxygen excitation of BrFB 3Π(0+). J Chem Phys 1991. [DOI: 10.1063/1.461709] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Mayo I, Bachar J, Rosenwaks S, Martin F, Bacis R, Verges J. Kinetics and spectroscopy of electronically excited BiO obtained by energy transfer from metastable O2. I. Dependence of excitation on [O2]. J Chem Phys 1990. [DOI: 10.1063/1.459321] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kaye JA. Nonlocal thermodynamic equilibrium effects in stratospheric HF by collisional energy transfer from electronically excited O(2) and implications for infrared remote sensing. APPLIED OPTICS 1989; 28:4161-4166. [PMID: 20555842 DOI: 10.1364/ao.28.004161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A possible nonlocal thermodynamic equilibrium (non-LTE) effect involving stratospheric HF arising from the direct photochemical excitation of vibrationally excited HF by collisional energy transfer from electronically excited O(2) [O(2)((1)Delta), O(2)((1)Sigma)] is presented. Although this non-LTE effect is smaller than one associated with the direct solar excitation of both HF(nu= 1) and HF(nu= 2), calculations show that inclusion of the mechanism proposed here into retrieval algorithms is necessary if correct daytime upper stratosphere HF profiles are to be inferred in future infrared thermal emission measurements. Accurate determinations of the state-to-state rate constants of the reactions involved in these excitation processes and of the quenching rates of vibrationally excited HF are needed if IR thermal emission techniques are to be accurately employed in the measurement of stratospheric HF.
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