The reactions of hydrogen and deuterium atoms with four ketenes.
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概要
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The rate constants of the reactions of hydrogen and deuterium atoms with four ketenes have been measured using a pulse radiolysis-resonance absorption technique. For hydrogen atoms, the temperature dependence was also examined in the range of 240–440 K. The rate constants were well expressed by these Arrhenius equations: <I>k</I>(H+ketene)=3.9×10<SUP>6</SUP>exp(−975⁄<I>T</I>); <I>k</I>(H+methylketene)=74×10<SUP>6</SUP>exp(−881⁄<I>T</I>); <I>k</I>(H+ethylketene)=4.4×10<SUP>6</SUP>exp(−728⁄<I>T</I>); <I>k</I>(H+dimethylketene)=6.0×10<SUP>6</SUP>exp(−773⁄<I>T</I>), in units of m<SUP>3</SUP> mol<SUP>−1</SUP> s<SUP>−1</SUP>. No isotope effect between H and D atoms could be observed except for the gas-kinetic-collision frequency.
- 公益社団法人 日本化学会の論文
著者
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Umemoto Hironobu
Department Of Chemical Materials Science Japan Advanced Institute Of Science And Technology
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WASHIDA Nobuaki
Division of Atmospheric Environment, The National Institute for Environmental Studies
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Hatakeyama Shiro
Division of Atmospheric Environment, The National Institute for Environmental Studies
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Sato Shin
Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
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Tsunashima Shigeru
Department of Applied Physics, Tokyo Institute of Technology
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Umemoto Hironobu
Department of Applied Physics, Tokyo Institute of Technology
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Hatakeyama Shiro
Division of Atmospheric Environment, National Institute for Environmental Studies
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