Radiolysis of liquid nitrous oxide. Hydrocarbon additives

Sambrook, Terance E. M.; Freeman, Gordon R.

doi:10.1021/j100594a006

Cited by 6 publications

(2 citation statements)

References 8 publications

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“…0.5 was recently found to be valid for many hydrocarbons. 16 Values of £(N2)hc can now be obtained from previously published nitrogen yields.…”

Section: Plateau Values Of £(N2)hcmentioning

confidence: 99%

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Radiolysis of liquid hydrocarbon-nitrous oxide solutions. Precursors of nitrogen

Freeman¹,

Sambrook²

1974

J. Phys. Chem.

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When nitrous oxide is added to liquid alkanes, the yield of nitrogen g(N2)nc that results from energy initially absorbed in the hydrocarbon increases to a plateau value when the nitrous oxide concentration is increased. The plateau value £( 2) (: = 5.2 ± 0.2 has been observed to extend over a 40-fold range of concentration in liquid ethane. The same plateau value has been observed in propane, extending over a fivefold concentration range. Similar plateaus exist in cyclohexane and methylcyclopentane, and appear also to exist in cyclopropane and neopentane. Secondary reactions involving oxygen-containing anionic intermediates do not form nitrogen in these solutions. Nitrogen results from the reaction of nitrous oxide with primary radiolytic species. The primary species appear to be mainly electrons, but a small contribution from neutral excited molecules cannot be excluded. The yield of primary species that react with nitrous oxide to form nitrogen is g(primary species)HC = 5.2 ± 0.3 in ethane, propane, cyclopropane, neopentane, methylcyclopentane, and cyclohexane.

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“…0.5 was recently found to be valid for many hydrocarbons. 16 Values of £(N2)hc can now be obtained from previously published nitrogen yields.…”

Section: Plateau Values Of £(N2)hcmentioning

confidence: 99%

“…Points 3-5 are evaluated below, with reference to a study of the radiolysis of liquid nitrous oxide. 16…”

Section: Introductionmentioning

confidence: 99%

Radiolysis of liquid hydrocarbon-nitrous oxide solutions. Precursors of nitrogen

Freeman¹,

Sambrook²

1974

J. Phys. Chem.

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Is there a hydride transfer between N2OH+ and saturated hydrocarbons?

et al. 1995

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PHOTOVOLTATC EFFICIENCIES OF MICROCRYSTALLINE AND ANHYDROUS CHLOROPHYLL a

Dodelet

Brich

Leblanc

1979

Photochem & Photobiology

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A thin layer of chlorophyll a (around 2000A). a p-type organic semiconductor. was sandwiched between two different metals. aluminum and silver. We used the photovoltaic effect in order to study the efficiency of light conversion by the crystalline and anhydrous forms of Chla. When the photovoltaic cell is illuminated through thc semi-transparent aluminum electrode. an action spectrum similar to the visible absorption spectrum of Chla is obtained. The anhydrous form. always shows a maximum, in the red, at 672 nm and the crystalline one at 746 nm to 738 nm depending on the amount of water vapor present in the measuring area. The light conversion efficiency has been measured at the maximum absorption in the rcd for both forms of Chlu. For the anhydrous form, we found values as high as 0.036"<, which is very significant even compared to 0.21'),,. the highest value found for the crystalline form. In both cases. the incident light power was approximately IOpW on the cell. The light conversion efficiency of both forms of Chla cells was found to depend on a combine effect of the nature of the gas (O1. N2. air. Ar. N,O. SF,. HZ) and the amount of water vapor present in the measuring area. The best conversion efficiency was obtained with 0, or air saturated with water. This combined effect was very large for the crystalline form whereas the anhydrous form was only slightly affected. INTRODUCITON

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Radiolysis of liquid nitrous oxide. Hydrocarbon additives

Cited by 6 publications

References 8 publications

Radiolysis of liquid hydrocarbon-nitrous oxide solutions. Precursors of nitrogen

Radiolysis of liquid hydrocarbon-nitrous oxide solutions. Precursors of nitrogen

Is there a hydride transfer between N2OH+ and saturated hydrocarbons?

PHOTOVOLTATC EFFICIENCIES OF MICROCRYSTALLINE AND ANHYDROUS CHLOROPHYLL a

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