The Antioxidant Properties of Oxygen

Michael M. Silaev

doi:doi:10.11648/j.ajpc.20130202.12

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The Antioxidant Properties of Oxygen

Michael M. Silaev

Published in American Journal of Physical Chemistry (Volume 2, Issue 2)

Published: 2 April 2013

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Abstract

New reaction scheme is suggested for the initiated nonbranched-chain addition of free radicals to the multiple bond of the molecular oxygen. The scheme includes the reaction competing with chain propagation reactions through a reactive free radical. The chain evolution stage in this scheme involves a few of free radicals, one of which (tetraoxyl) is relatively low-reactive and inhibits the chain process by shortening of the kinetic chain length. Based on the proposed scheme rate equations (containing one to three parameters to be determined directly) are deduced using quasi-steady-state treatment. The kinetic description with use the obtained rate equations is applied to the γ-induced nonbranched-chain processes of the free-radical oxidation of liquid o-xylene at 373 K and hydrogen dissolved in water containing different amounts of oxygen at 296 K. In these processes the oxygen with the increase of its concentration begins to act as an oxidation autoingibitor (or an antioxidant), and the rate of peroxide formation as a function of the dissolved oxygen concentration has a maximum. The energetics of the key radical-molecule reactions is considered.

Published in	American Journal of Physical Chemistry (Volume 2, Issue 2)
DOI	10.11648/j.ajpc.20130202.12
Page(s)	33-43
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2013. Published by Science Publishing Group

Keywords

Competition, Low-Reactive Radical, Autoinhibitor, Thermochemical Data, Energy, Hydrogen

References

[1]	M. M. Silaev and L. T. Bugaenko, "Mathematical Simulation of the Kinetics of Radiation Induced Hydroxyalkylation of Aliphatic Saturated Alcohols", Radiation Physics and Chemistry, 1992, vol. 40, no. 1, pp. 1–10.
[2]	V. Vereshchinskii and A. K. Pikaev, "Vvedenie v radiatsionnuyu khimiyu" ("Introduction to Radiation Chemistry"), Spitsyn, V.I., Editor, Akademiya Nauk SSSR, Moscow, 1963, p. 190.
[3]	M. M. Silaev, "Applied Aspects of the γ-Radiolysis of C1–C4 Alcohols and Binary Mixtures on Their Basis", Khimiya Vysokikh Energii, Vol. 36, No. 2, 2002, pp. 97–101, English Translation in: High Energy Chemistry, 2002, vol. 36, no. 2, pp. 70–74.
[4]	K. Pikaev, "Sovremennaya radiatsionnaya khimiya. Radioliz gazov i zhidkostei" ("Modern Radiation Chemistry: Radiolysis of Gases and Liquids"), Nauka, Moscow, 1986.
[5]	N. M. Emanuel, E. T. Denisov, and Z. K. Maizus, "Tsepnye reaktsii okisleniya uglevodorodov v zhidkoi faze" ("Chain Oxidation Reactions of Hydrocarbons in the Liquid Phase"), Nauka, Moscow, 1965.
[6]	S. W. Benson, "Thermochemical Kinetics: Methods for the Estimation of Thermochemical Data and Rate Parameters", 2nd Edition, Wiley, New York, 1976.
[7]	Ch. Walling, "Free Radicals in Solution", Wiley, New York, 1956.
[8]	L. Bateman, "Olefin Oxidation", Quarterly Reviews, 1954, vol. 8, no. 2, pp. 147–167.
[9]	V. Ya. Shtern, "Mekhanizm okisleniya uglevodorodov v gazovoi faze (Mechanism of the Gas-Phase Oxidation of Hydrocarbons)", Akademiya Nauk SSSR, Moscow, 1960.
[10]	H. L. J. Bäckström, "Der Kettenmechanismus bei der Autoxydation von Aldehyden", Zeitschrift für physikalische Chemie (B)", 1934, Bd. 25, № 1–2, Sn. 99–121.
[11]	A. Aliev, and V. V. Saraeva, "Isomerization of Peroxy Radicals Resulting from the Radiation-Induced Oxidation of o-Xylene", Vestnik Moskovskogo Universiteta, Ser. 2: Khimiya, 1983, vol. 34, no. 4, pp. 371–374.
[12]	E. J. Badin, "The Reaction between Atomic Hydrogen and Molecular Oxygen at Low Pressures. Surface Effects", Journal of the American Chemistry Society, 1948, vol. 70, no. 11, pp. 3651–3655.
[13]	M. M. Silaev, "A New Competitive Kinetic Model of Radical Chain Oxidation: Oxygen as an Autoinhibitor", Biofizika, 2001, vol. 46, no. 2, pp. 203–209, English Translation in: Biophysics, 2001, vol. 46, no. 2, pp. 202–207.
[14]	M. M. Silaev, "Simulation of the Initiated Addition of Hydrocarbon Free Radicals and Hydrogen Atoms to Oxygen via a Nonbranched Chain Mechanism", Teoreticheskie Osnovy Khimicheskoi Tekhnologii, 2007, vol. 41, no. 6, pp. 634–642, English Translation in: Theoretical Foundation of Chemical Engineering, 2007, vol. 41, no. 6, pp. 831–838.
[15]	M. M. Silaev and L. T. Bugaenko, "Kinetics of the Addition of α-Hydroxyalkyl Radicals to 2-Propen-1-ol and Formaldehyde", Kinetics and Katalysis, 1994, vol. 35, no. 4, pp. 509–513.
[16]	L. V. Gurvich, G. V. Karachevtsev, V. N. Kondrat'ev, Yu. A. Lebedev, V. A. Medvedev, V. K. Potapov, and Yu. S. Khodeev, "Energii razryva khimicheskikh svyazei. Potentsialy ionizatsii i srodstvo k elektronu"("Bond Dissociation Energies, Ionization Potentials, and Electron Affinity"), V. N. Kondrat'ev, Editor, Nauka, Moscow, 1974.
[17]	Yu. D. Orlov, Yu. A. Lebedev, and I. Sh. Saifullin, "Termokhimiya organicheskikh svobodnykh radikalov" ("Thermochemistry of Organic Free Radicals"), A. M. Kutepov, Editor., Nauka, Moscow, 2001.
[18]	J. B. Pedley, R. D. Naylor, and S. P. Kirby, "Thermochemical Data of Organic Compounds", 2nd Edition, Chapman & Hall, London, 1986.
[19]	L. Buchachenko, "Kompleksy radikalov i molekulyarnogo kisloroda s organicheskimi molekulami" ("Complexes of Radicals and Dioxygen with Organic Molecules"), I. P. Beletskaya, Editor, Nauka, Moscow, 1984.
[20]	J. S. Francisco and I. H. Williams, "The Thermochemistry of Polyoxides and Polyoxy Radicals", International Journal of Chemical Kinetics, 1988, vol. 20, no. 6, pp. 455–466.
[21]	V. N. Kokorev, N. N. Vyshinskii, V. P. Maslennikov, I. A. Abronin, G. M. Zhidomirov, and Yu. A. Aleksandrov, "Electronic Structure and Chemical Reactions of Peroxides: I. MINDO/3 Calculation of the Geometry and Enthalpy of Formation of the Ground States of Organic and Organoelement Peroxides", Zhurnal Strukturnoi Khimii, 1981, vol. 22, no. 4, pp. 9–15.
[22]	F. Dmitruk, V. V. Lobanov, and L. I. Kholoimova, "Role of Tetroxide Conformation in the Mechanism of Peroxy Radical Recombination", Teoreticheskaya i Eksperimental’naya Khimiya, 1986, vol. 22, no. 3, pp. 363–366.
[23]	V. A. Belyakov, R. F. Vasil'ev, N. M. Ivanova, B. F. Minaev, O. V. Osyaeva, and G. F. Fedorova, "Electronic Model of the Excitation of Chemiluminescence in the Oxidation of Organic Compounds", Izvestiya Akademii Nauk SSSR, Ser.: Fizika, 1987, vol. 51, no. 3, pp. 540–547.
[24]	P. Ase, W. Bock, and A. Snelson, "Alkylperoxy and Alkyl Radicals. 1. Infrared Spectra of CH3O2 and CH3O4CH3 and the Ultraviolet Photolysis of CH3O2 in Argon + Oxygen Matrices", The Journal of Physical Chemistry, 1986, vol. 90, no. 10, pp. 2099–2109.
[25]	G. C. Pimentel and A. L. McClellan, "The Hydrogen Bond", L. Pauling, Editor, Freeman, San Francisco, 1960, p. 200.
[26]	G. A. Russell, "Deuterium-Isotope Effects in the Autooxidation of Aralkyl Hydrocarbons: Mechanism of the Interaction of Peroxy Radicals", Journal of the American Chemical Society, 1957, vol. 79, no. 14, pp. 3871–3877.
[27]	M. M. Silaev, "The Competition Kinetics of Nonbranched Chain Processes of Free-Radical Addition to Double Bonds of Molecules with the Formation of 1:1 Adducts and the Inhibition by the Substrate", Oxidation Communication, 1999, vol. 22, no. 2, pp. 159–170.
[28]	M. M. Silaev, "The Competition Kinetics of Radical-Chain Addition", Zhurnal Fizicheskoi Khimii, Vol. 73, No. 7, 1999, pp. 1180–1184, English Translation in: Russian Journal of Physical Chemistry, 1999, vol. 73, no. 7, pp. 1050–1054.
[29]	P. Darmanyan, D. D. Gregory, Y. Guo, W. S. Jenks, L. Burel, D. Eloy, and P. Jardon, "Quenching of Singlet Oxygen by Oxygen- and Sulfur-Centered Radicals: Evidence for Energy Transfer to Peroxy Radicals in Solution", Journal of the American Chemistry Society, 1998, vol. 120, no. 2, pp. 396–403.
[30]	J. R. Kanofsky, "Singlet Oxygen Production from the Reactions of Alkylperoxy Radicals. Evidence from 1268-nm Chemiluminescence", The Journal of Organic Chemistry, 1986, vol. 51, no. 17, pp. 3386–3388.
[31]	N. N. Semenov, "Tsepnye reaktsii" ("Chain Reactions"), Goskhimtekhizdat, Leningrad, 1934, pp. 241, 203.
[32]	M. Reznikovskii, Z. Tarasova, and B. Dogadkin, "Oxygen Solubility in Some Organic Liquids", Zhurnal Obshchei Khimii, 1950, vol. 20, no. 1, pp. 63–67.
[33]	J. A. Howard and K. U. Ingold, "Absolute Rate Constants for Hydrocarbon Autooxidation. VI. Alkyl Aromatic and Olefinic Hydrocarbons", Canadian Journal of Chemistry, 1967, vol. 45, no. 8, pp. 793–802.
[34]	N. F. Barr and A. O. Allen, "Hydrogen Atoms in the Radiolysis of Water", The Journal of Physical Chemistry, 1959, vol. 63, no. 6, pp. 928–931.
[35]	H. A. Smith and A. Napravnik, "Photochemical Oxidation of Hydrogen", Journal of the American Chemistry Society, 1940, vol. 62, no. 1, pp. 385–393.
[36]	P. B. Pagsberg, J. Eriksen, and H. C. Christensen, "Pulse Radiolysis of Gaseous Ammonia–Oxygen Mixtures", The Journal of Physical Chemistry, 1979, vol. 83, no. 5, pp. 582–590.
[37]	M. M. Silaev, "Competitive Mechanism of the Non-branched Radical Chain Oxidation of Hydrogen Involvingthe Free Cyclohydrotetraoxyl Radical [ОО···Н···ОО]•, which Inhibits the Chain Process", "Khimiya Vysokikh Energii, 2003, vol. 37, no. 1, pp. 27–32, English Translation in: High Energy Chemistry, 2003, vol. 37, no. 1, pp. 24–28.
[38]	M. M. Silaev, "Simulation of Initiated Nonbranched Chain Oxidation of Hydrogen: Oxygen as an Autoinhibitor", Khimiya Vysokich Energii, 2008, vol. 42, no. 2, pp. 124–129, English Translation in: High Energy Chemistry, 2008, vol. 42, no. 1, pp. 95–100.
[39]	D. J. McKay and J. S. Wright, "How Long Can You Make an Oxygen Chain?", Journal of the American Chemistry Society, 1998, vol. 120, no. 5, pp. 1003–1013.
[40]	N. P. Lipikhin, "Dimers, Clusters, and Cluster Ions of Oxygen in the Gas Phase", Uspekhi Khimii, 1975, vol. 44, no. 8, pp. 366–376.
[41]	S. D. Razumovskii, "Kislorod – elementarnye formy i svoistva" ("Oxygen: Elementary Forms and Properties"), Khimiya, Moscow, 1979.
[42]	K. M. Dunn, G. E. Scuceria, and H. F. Schaefer III, "The infrared spectrum of cyclotetraoxygen, O4: a theoretical investigation employing the single and double excitation coupled cluster method", The Journal of Chemical Physics, 1990, vol. 92, no. 10, pp. 6077–6080.
[43]	L. Brown and V. Vaida, "Photoreactivity of Oxygen Dimers in the Ultraviolet", The Journal of Physical Chemistry, 1996, vol. 100, no. 19, pp. 7849–7853.
[44]	V. Aquilanti, D. Ascenzi, M. Bartolomei, D. Cappelletti, S. Cavalli, M. de Castro-Vitores, and F. Pirani, "Molecular Beam Scattering of Aligned Oxygen Molecules. The Nature of the Bond in the O2–O2 Dimer", Journal of the American Chemistry Society, 1999, vol. 121, no. 46, pp. 10794–1080.
[45]	F. Cacace, G. de Petris, and A. Troiani, "Experimental Detection of Tetraoxygen", Angewandte Chemie, Internation Edition (in English), 2001, vol. 40, no. 21, pp. 4062–4065.
[46]	H. S. Taylor, "Photosensitisation and the Mechanism of Chemical Reactions", Transactions of the Faraday Society, 1926, vol. 21, no. 63(3), pp. 560–568.
[47]	B. Nalbandyan and V. V. Voevodskii, "Mekhanizm okisleniya i goreniya vodoroda" ("Mechanism of Hydrogen Oxidation and Combustion"), V. N. Kondrat'ev, Editor, Akad. Nauk SSSR, Moscow, 1949.
[48]	S. N. Foner and R. L. Hudson, "Mass spectrometry of the HO2 free radical", The Journal of Chemical Physics, 1962, vol. 36, no. 10, p. 2681.
[49]	C. J. Hochanadel, J. A. Ghormley, and P. J. Ogren, "Absorption Spectrum and Reaction Kinetics of the HO2 Radical in the Gas Phase", The Journal of Chemical Physics, 1972, vol. 56, no. 9, pp. 4426–4432.
[50]	P. D. Lightfoot, B. Veyret, and R. Lesclaux, "Flash Photolysis Study of the CH3O2 + HO2 Reaction between 248 and 573 K", The Journal of Physical Chemistry, 1990, vol. 94, no. 2, pp. 708–714.
[51]	P. Smith, "The HO3 and HO4 Free Radicals", Chem. & Ind., 1954, no. 42, pp. 1299–1300.
[52]	J. B. Robertson, "A Mass Spectral Search for H2O4 and HO4 in a Gaseous Mixture Containing HO2 and O2", Chem. & Ind., 1954, no. 48, p. 1485.
[53]	D. Bahnemann and E. J. Hart, "Rate Constants of the Reaction of the Hydrated Electron and Hydroxyl Radical with Ozone in Aqueous Solution", The Journal of Physical Chemistry, 1982, vol. 86, no. 2, pp. 252–255.
[54]	"Vodorodnaya svyaz’: Sbornik statei" ("The Hydrogen Bonding: Collection of Articles") N. D. Sokolov, Editor, Nauka, Moscow, 1981.
[55]	J. Staehelin, R. E. Bühler, and J. Hoigné, "Ozone Decomposition in Water Studied by Pulse Radiolysis. 2. OH and HO4 as Chain Intermediates", The Journal of Physical Chemistry, 1984, vol. 88, no. 24, pp. 5999–6004.
[56]	F. Cacace, G. de Petris, F. Pepi, and A. Troiani, "Experimental Detection of Hydrogen Trioxide", Science, 1999, vol. 285, no. 5424, pp. 81–82.
[57]	R. F. Bühler, J. Staehelin, and J. Hoigné, "Ozone Decomposition in Water Studied by Pulse Radiolysis. 1. HO2/ O2– and HO3/ O3– as Intermediates", The Journal of Physical Chemistry, 1984, vol. 88, no. 12, pp. 2560–2564.
[58]	V. Trushkov, M. M. Silaev, and N. D. Chuvylkin, "Acyclic and Cyclic Forms of the Radicals , , and : Ab Initio Quantum Chemical Calculations", Izvestiya Akademii Nauk, Ser.: Khimiya, 2009, no. 3, pp. 479–482, English Translation in: Russian Chemical Bulletin, International Edition, 2009, vol. 58, no. 3, pp. 489–492.
[59]	Mansergas, J. M. Anglada, S. Olivella, M. F. Ruiz-López, "On the Nature of the Unusually Long OO Bond in HO3 and HO4 Radicals", Phys. Chem. Chem. Phys., 2007, vol. 9, no. 44, pp. 5865–5873.
[60]	W. Wong and D. D. Davis, "A Flash Photolysis Resonance Fluorescence Study of the Reactions of Atomic Hydrogen and Molecular Oxygen: H + O2 + M → HO2 + M", International Journal of Chemical Kinetics, 1974, vol. 6, no. 3, pp. 401–416.
[61]	Yagodovskaya, T.V. and Nekrasov, L.I., Zh. Fiz. Khim., 1977, vol. 51, no. 10, pp. 2434–2445.
[62]	X. Xu, R. P. Muller, and W. A. Goddard III, "The Gas Phase Reaction of Singlet Dioxygen with Water: a Water-Catalyzed Mechanism", Proceedings of the National Academy Sciences of the United States of America, 2002, vol. 99, no. 6, pp. 3376–3381.
[63]	E. T. Seidl and H. F. Schaefer III, "Is There a Transition State for the Unimolecular Dissociation of Cyclotetraoxygen (O4)?", The Journal of Chemical Physics, 1992, vol. 96, no. 2, pp. 1176–1182.
[64]	R. Hernández-Lamoneda and A. Ramírez-Solís, "Reactivity and Electronic States of O4 along Minimum Energy Paths", The Journal of Chemical Physics, 2000, vol. 113, no. 10, pp. 4139–4145.
[65]	J. C. Varandas and L. Zhang, "Test Studies on the Potential Energy Surface and Rate Constant for the OH + O3 Atmospheric Reaction", Chemical Physics Letters, 2000, vol. 331, nos. 5–6, pp. 474–482.
[66]	"Atmosfera. Spravochnik" ("Atmosphere: A Handbook"), Gidrometeoizdat, Leningrad, 1991.
[67]	H. Okabe, "Photochemistry of Small Molecules", Wiley, New York, 1978.
[68]	W. Boyd, C. Willis, and O. A. Miller, "A Re-examination of the Yields in the High Dose Rate Radiolysis of Gaseous Ammonia", Canadian Journal of Chemistry, 1971, vol. 49, no. 13, pp. 2283–2289.
[69]	M. M. Silaev, "Competition Mechanism of Substrate-Inhibited Radical Chain Addition to Double Bond", Neftekhimiya, 2000, vol. 40, no. 1, pp. 33–40, English Translation in: Petroleum Chemistry, 2000, vol. 40, no. 1, pp. 29–35.
[70]	M. M. Silaev, "Competition Kinetics of Nonbranched Chain Processes of Free Radical Addition to the C=C, C=O, and O=O Double Bonds of Molecules", Neftekhimiya, 2003, vol. 43, no. 4, pp. 302–307, English Translation in: Petroleum Chemistry, 2003, vol. 43, no. 4, pp. 258–273.
[71]	M. M. Silaev, "Low-reactive Free Radicals Inhibiting Nonbranched Chain Processes of Addition", Biofizika, 2005, vol. 50, no. 4, pp. 585–600, English Translation in: Biophysics, 2005, vol. 50, no. 4, pp. 511–524.
[72]	M. Silaev, "Reactions of the Free-Radical Addition: Heat Effects, Competition Kinetics of the Nonbranched-Chain Processes, Inhibition by Low-Reactive Radicals", Research Bulletin of the Australian Institute of High Energetic Materials, 2011, vol. 2, pp. 122–158.

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Michael M. Silaev. (2013). The Antioxidant Properties of Oxygen. American Journal of Physical Chemistry, 2(2), 33-43. https://doi.org/10.11648/j.ajpc.20130202.12

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Michael M. Silaev. The Antioxidant Properties of Oxygen. Am. J. Phys. Chem. 2013, 2(2), 33-43. doi: 10.11648/j.ajpc.20130202.12

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Michael M. Silaev. The Antioxidant Properties of Oxygen. Am J Phys Chem. 2013;2(2):33-43. doi: 10.11648/j.ajpc.20130202.12

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@article{10.11648/j.ajpc.20130202.12,
  author = {Michael M. Silaev},
  title = {The Antioxidant Properties of Oxygen},
  journal = {American Journal of Physical Chemistry},
  volume = {2},
  number = {2},
  pages = {33-43},
  doi = {10.11648/j.ajpc.20130202.12},
  url = {https://doi.org/10.11648/j.ajpc.20130202.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajpc.20130202.12},
  abstract = {New reaction scheme is suggested for the initiated nonbranched-chain addition of free radicals to the multiple bond of the molecular oxygen. The scheme includes the reaction competing with chain propagation reactions through a reactive free radical. The chain evolution stage in this scheme involves a few of free radicals, one of which (tetraoxyl) is relatively low-reactive and inhibits the chain process by shortening of the kinetic chain length. Based on the proposed scheme rate equations (containing one to three parameters to be determined directly) are deduced using quasi-steady-state treatment. The kinetic description with use the obtained rate equations is applied to the γ-induced nonbranched-chain processes of the free-radical oxidation of liquid o-xylene at 373 K and hydrogen dissolved in water containing different amounts of oxygen at 296 K. In these processes the oxygen with the increase of its concentration begins to act as an oxidation autoingibitor (or an antioxidant), and the rate of peroxide formation as a function of the dissolved oxygen concentration has a maximum. The energetics of the key radical-molecule reactions is considered.},
 year = {2013}
}

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TY  - JOUR
T1  - The Antioxidant Properties of Oxygen
AU  - Michael M. Silaev
Y1  - 2013/04/02
PY  - 2013
N1  - https://doi.org/10.11648/j.ajpc.20130202.12
DO  - 10.11648/j.ajpc.20130202.12
T2  - American Journal of Physical Chemistry
JF  - American Journal of Physical Chemistry
JO  - American Journal of Physical Chemistry
SP  - 33
EP  - 43
PB  - Science Publishing Group
SN  - 2327-2449
UR  - https://doi.org/10.11648/j.ajpc.20130202.12
AB  - New reaction scheme is suggested for the initiated nonbranched-chain addition of free radicals to the multiple bond of the molecular oxygen. The scheme includes the reaction competing with chain propagation reactions through a reactive free radical. The chain evolution stage in this scheme involves a few of free radicals, one of which (tetraoxyl) is relatively low-reactive and inhibits the chain process by shortening of the kinetic chain length. Based on the proposed scheme rate equations (containing one to three parameters to be determined directly) are deduced using quasi-steady-state treatment. The kinetic description with use the obtained rate equations is applied to the γ-induced nonbranched-chain processes of the free-radical oxidation of liquid o-xylene at 373 K and hydrogen dissolved in water containing different amounts of oxygen at 296 K. In these processes the oxygen with the increase of its concentration begins to act as an oxidation autoingibitor (or an antioxidant), and the rate of peroxide formation as a function of the dissolved oxygen concentration has a maximum. The energetics of the key radical-molecule reactions is considered.
VL  - 2
IS  - 2
ER  -

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Michael M. Silaev

Department of Chemistry, Lomonosov Moscow State University, Vorob’evy Gory, Moscow 119991, Russia

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Michael M. Silaev. (2013). The Antioxidant Properties of Oxygen. American Journal of Physical Chemistry, 2(2), 33-43. https://doi.org/10.11648/j.ajpc.20130202.12

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Michael M. Silaev. The Antioxidant Properties of Oxygen. Am. J. Phys. Chem. 2013, 2(2), 33-43. doi: 10.11648/j.ajpc.20130202.12

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Michael M. Silaev. The Antioxidant Properties of Oxygen. Am J Phys Chem. 2013;2(2):33-43. doi: 10.11648/j.ajpc.20130202.12

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@article{10.11648/j.ajpc.20130202.12,
  author = {Michael M. Silaev},
  title = {The Antioxidant Properties of Oxygen},
  journal = {American Journal of Physical Chemistry},
  volume = {2},
  number = {2},
  pages = {33-43},
  doi = {10.11648/j.ajpc.20130202.12},
  url = {https://doi.org/10.11648/j.ajpc.20130202.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajpc.20130202.12},
  abstract = {New reaction scheme is suggested for the initiated nonbranched-chain addition of free radicals to the multiple bond of the molecular oxygen. The scheme includes the reaction competing with chain propagation reactions through a reactive free radical. The chain evolution stage in this scheme involves a few of free radicals, one of which (tetraoxyl) is relatively low-reactive and inhibits the chain process by shortening of the kinetic chain length. Based on the proposed scheme rate equations (containing one to three parameters to be determined directly) are deduced using quasi-steady-state treatment. The kinetic description with use the obtained rate equations is applied to the γ-induced nonbranched-chain processes of the free-radical oxidation of liquid o-xylene at 373 K and hydrogen dissolved in water containing different amounts of oxygen at 296 K. In these processes the oxygen with the increase of its concentration begins to act as an oxidation autoingibitor (or an antioxidant), and the rate of peroxide formation as a function of the dissolved oxygen concentration has a maximum. The energetics of the key radical-molecule reactions is considered.},
 year = {2013}
}

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TY  - JOUR
T1  - The Antioxidant Properties of Oxygen
AU  - Michael M. Silaev
Y1  - 2013/04/02
PY  - 2013
N1  - https://doi.org/10.11648/j.ajpc.20130202.12
DO  - 10.11648/j.ajpc.20130202.12
T2  - American Journal of Physical Chemistry
JF  - American Journal of Physical Chemistry
JO  - American Journal of Physical Chemistry
SP  - 33
EP  - 43
PB  - Science Publishing Group
SN  - 2327-2449
UR  - https://doi.org/10.11648/j.ajpc.20130202.12
AB  - New reaction scheme is suggested for the initiated nonbranched-chain addition of free radicals to the multiple bond of the molecular oxygen. The scheme includes the reaction competing with chain propagation reactions through a reactive free radical. The chain evolution stage in this scheme involves a few of free radicals, one of which (tetraoxyl) is relatively low-reactive and inhibits the chain process by shortening of the kinetic chain length. Based on the proposed scheme rate equations (containing one to three parameters to be determined directly) are deduced using quasi-steady-state treatment. The kinetic description with use the obtained rate equations is applied to the γ-induced nonbranched-chain processes of the free-radical oxidation of liquid o-xylene at 373 K and hydrogen dissolved in water containing different amounts of oxygen at 296 K. In these processes the oxygen with the increase of its concentration begins to act as an oxidation autoingibitor (or an antioxidant), and the rate of peroxide formation as a function of the dissolved oxygen concentration has a maximum. The energetics of the key radical-molecule reactions is considered.
VL  - 2
IS  - 2
ER  -

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