Reactions of Recoil Iodine Formed by the 123Xe → 123I System with Simple Hydrocarbons. II. Pressure Studies on the Methane and Ethane Systems

Michael D. Loberg; Kenneth A. Krohn; Michael J. Welch

doi:10.1021/ja00798a011

Reactions of Recoil Iodine Formed by the ¹²³Xe → ¹²³I System with Simple Hydrocarbons. II. Pressure Studies on the Methane and Ethane Systems

Michael D. Loberg, Kenneth A. Krohn, Michael J. Welch

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12 Scopus citations

Abstract

Recoil iodine species produced by the system ¹²³Xe → ¹²³I are reacted with methane and ethane, both with and without additives being present, over the density range 10^-4 to 0.5 g/cc. Qualitatively, major differences are observed between the behavior of methane and ethane. In methane the yield of organic products drops from ≃50 to ≃10%, while in ethane the yield increases over the same density range. The effects observed in the lower density region (10^-4 to ≃10^-1 g/cc) are interpreted in terms of an ion-molecule mechanism previously developed by us to explain the methane system at 1 atm. The trends observed at the higher densities are explained by the autoradiation hypothesis model.

Original language	English (US)
Pages (from-to)	5496-5503
Number of pages	8
Journal	Journal of the American Chemical Society
Volume	95
Issue number	17
DOIs	https://doi.org/10.1021/ja00798a011
State	Published - Aug 1 1973
Externally published	Yes

ASJC Scopus subject areas

Catalysis
General Chemistry
Biochemistry
Colloid and Surface Chemistry

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abstract = "Recoil iodine species produced by the system 123Xe → 123I are reacted with methane and ethane, both with and without additives being present, over the density range 10-4 to 0.5 g/cc. Qualitatively, major differences are observed between the behavior of methane and ethane. In methane the yield of organic products drops from ≃50 to ≃10%, while in ethane the yield increases over the same density range. The effects observed in the lower density region (10-4 to ≃10-1 g/cc) are interpreted in terms of an ion-molecule mechanism previously developed by us to explain the methane system at 1 atm. The trends observed at the higher densities are explained by the autoradiation hypothesis model.",

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AU - Krohn, Kenneth A.

AU - Welch, Michael J.

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AB - Recoil iodine species produced by the system 123Xe → 123I are reacted with methane and ethane, both with and without additives being present, over the density range 10-4 to 0.5 g/cc. Qualitatively, major differences are observed between the behavior of methane and ethane. In methane the yield of organic products drops from ≃50 to ≃10%, while in ethane the yield increases over the same density range. The effects observed in the lower density region (10-4 to ≃10-1 g/cc) are interpreted in terms of an ion-molecule mechanism previously developed by us to explain the methane system at 1 atm. The trends observed at the higher densities are explained by the autoradiation hypothesis model.

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Reactions of Recoil Iodine Formed by the ¹²³Xe → ¹²³I System with Simple Hydrocarbons. II. Pressure Studies on the Methane and Ethane Systems

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