The rate constants for H and D-atom additions to O2, NO, acetylene, and 1,3-butadiene.

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概要

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• Pulse radiolysis has been combined with Lyman-α absorption spectroscopy for the measurement of absolute rate constants for the addition reactions of H and D-atoms to oxygen, nitrogen monoxide, acetylene-<I>d</I><SUB>0</SUB> and -<I>d</I><SUB>2</SUB>, and 1,3-butadiene at room temperature. The rate constants obtained with O<SUB>2</SUB> and NO were in good agreement with the results previously reported and no H/D isotope effect was found. With acetylenes and 1,3-butadiene, the following rate constants were obtained (units of cm<SUP>3</SUP> molecule<SUP>−1</SUP> s<SUP>−1</SUP>): (3.8±0.4)×10<SUP>−13</SUP> for H+C<SUB>2</SUB>H<SUB>2</SUB>; (2.6±0.2)×10<SUP>−13</SUP> for D+C<SUB>2</SUB>H<SUB>2</SUB>; (3.8±0.2)×10<SUP>−13</SUP> for H+C<SUB>2</SUB>D<SUB>2</SUB>; (2.5±0.2)×10<SUP>−13</SUP> for D+C<SUB>2</SUB>D<SUB>2</SUB>; (8.5±1.5)×10<SUP>−12</SUP> for H+1,3-C<SUB>4</SUB>H<SUB>6</SUB>; (7.5±0.6)×10<SUP>−12</SUP> for D+1,3-C<SUB>4</SUB>H<SUB>6</SUB>. These results are compared to previous studies, and the H/D isotope effect discussed.

• 公益社団法人 日本化学会の論文

著者

• Ishikawa Yo-ichi

  Department of Applied Physics, Tokyo Institute of Technology

• Sugawara Ko-ichi

  Department of Applied Physics, Tokyo Institute of Technology

• Sato Shin

  Department of Applied Physics, Tokyo Institute of Technology

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