Deuterium-isotope Effects in the Autoxidation of Aralkyl Hydrocarbons. Mechanism of the Interaction of PEroxy Radicals<sup>1</sup>

Russell, Glen A.

doi:10.1021/ja01571a068

Cited by 1,090 publications

(473 citation statements)

References 8 publications

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“…Secondary peroxyl radicals are expected to self-react by the Russell reaction (2) to give equivalent yields of ketones and sec. alcohols [29]. However, it has been previously reported that less sec.…”

Section: Discussionmentioning

confidence: 94%

Antioxidant effectiveness of vitamin E in HDPE and tetradecane at 32°C

Mallégol

Carlsson

Deschênes

2001

Polymer Degradation and Stability

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Vitamin E was found to be a very effective antioxidant both in a model, liquid alkane, (teradecane) and in HDPE when oxidations at close to room temperature were initiated with g-radiation. FTIR was used to follow changes in vitamin E in oxidising tetradecane and HDPE, even at very low concentrations of the antioxidant. Formation of isolated hydroperoxide groups as a direct result of the vitamin E-peroxyl radical reaction were clearly visible. Quinone products from vitamin E were formed during g-irradiation, but different quinones were formed depending on the vitamin E concentrations. Vitamin E quite effectively retarded the oxidation of HDPE during g-irradiation and so should be useful in polyethylene intended for radiation sterilisation, as packaging materials or medical devices. Crown

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Section: Discussionmentioning

confidence: 94%

Antioxidant effectiveness of vitamin E in HDPE and tetradecane at 32°C

Mallégol

Carlsson

Deschênes

2001

Polymer Degradation and Stability

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“…43,44 The oxidation reaction is usually written as a more complex scheme 20 but simulations show that under the conditions accessed in the experiments 16 only the reactions in Eqs. 2-4 are active.…”

Section: Rh + Oh → R• + H2o (2)mentioning

confidence: 99%

Oxidation of a model alkane aerosol by OH radical: the emergent nature of reactive uptake

Houle

Hinsberg

Wilson

2015

Phys. Chem. Chem. Phys.

155

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An accurate description of the evolution of organic aerosol in the Earth's atmosphere is essential for climate models. However, the complexity of multiphase chemical and physical transformations has been challenging to describe at the level required to predict aerosol lifetimes and changes in chemical composition. In this work a model is presented that reproduces experimental data for the early stages of oxidative aging of squalane aerosol by hydroxyl radical (OH), a process governed by reactive uptake of gas phase species onto the particle surface. Simulations coupling free radical reactions and Fickian diffusion are used to elucidate how the measured uptake coefficient reflects the elementary steps of sticking of OH to the aerosol as a result of a gas-surface collision, followed by very rapid abstraction of hydrogen and subsequent free radical reactions. It is found that the uptake coefficient is not equivalent to a sticking coefficient or an accommodation coefficient: it is an intrinsically emergent process that depends upon particle size, viscosity, and OH concentration. An expression is derived to examine how these factors control reactive uptake over a broad range of atmospheric and laboratory conditions, and is shown to be consistent with simulation results. Well-mixed, liquid behavior is found to depend on the reaction conditions in addition to the nature of the organic species in the aerosol particle.

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“…Alternatively, Yang et al (2008) suggested that hydroxyacids are formed by the photooxidation through the Russell mechanism (Russell, 1957). Warneck (2003) proposed that glycolic acid is an intermediate in the photochemical production of oxalic acid from ethene in marine cloud.…”

Section: Possible Sources Of Low Molecular Weight Monocarboxylic Acidmentioning

confidence: 99%

Low molecular weight (C1–C10) monocarboxylic acids, dissolved organic carbon and major inorganic ions in alpine snow pit sequence from a high mountain site, central Japan

Kawamura

Matsumoto

Tachibana

et al. 2012

Atmospheric Environment

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Low molecular weight (C 1 -C 10 ) monocarboxylic acids, dissolved organic carbon and major inorganic ions in alpine snow pit sequence from a high mountain site, central Japan AbstractSnowpack samples were collected from a snow pit sequence (6 m in depth) at the Murodo-Daira site near the summit of Mt. Tateyama, central Japan, an outflow region of Asian dusts. The snow samples were analyzed for a homologous series of low molecular weight normal (C 1 -C 10 ) and branched (iC 4 -iC 6 ) monocarboxylic acids as well as aromatic (benzoic) and hydroxy (glycolic and lactic) acids, together with major inorganic ions and dissolved organic carbon (DOC). The molecular distributions of organic acids were characterized by a predominance of acetic (range 7.8-76.4 ng/g-snow, av. 34.8 ng/g) or formic acid (2.6-48.1 ng/g, 27.7 ng/g), followed by propionic acid (0.6-5.2 ng/g, 2.8 ng/g). were found to account for 1-6% of DOC (270-1500 ng/g, 630 ng/g) in the snow samples.

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Deuterium-isotope Effects in the Autoxidation of Aralkyl Hydrocarbons. Mechanism of the Interaction of PEroxy Radicals¹

Cited by 1,090 publications

References 8 publications

Antioxidant effectiveness of vitamin E in HDPE and tetradecane at 32°C

Antioxidant effectiveness of vitamin E in HDPE and tetradecane at 32°C

Oxidation of a model alkane aerosol by OH radical: the emergent nature of reactive uptake

Low molecular weight (C1–C10) monocarboxylic acids, dissolved organic carbon and major inorganic ions in alpine snow pit sequence from a high mountain site, central Japan

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Deuterium-isotope Effects in the Autoxidation of Aralkyl Hydrocarbons. Mechanism of the Interaction of PEroxy Radicals1

Cited by 1,090 publications

References 8 publications

Antioxidant effectiveness of vitamin E in HDPE and tetradecane at 32°C

Antioxidant effectiveness of vitamin E in HDPE and tetradecane at 32°C

Oxidation of a model alkane aerosol by OH radical: the emergent nature of reactive uptake

Low molecular weight (C1–C10) monocarboxylic acids, dissolved organic carbon and major inorganic ions in alpine snow pit sequence from a high mountain site, central Japan

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Deuterium-isotope Effects in the Autoxidation of Aralkyl Hydrocarbons. Mechanism of the Interaction of PEroxy Radicals¹