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Homogeneous isotope exchange reaction between hydrogen and deuterium

✍ Scribed by Martin J. Rabinowitz; William C. Gardiner Jr.

Publisher: Elsevier Science
Year: 1986
Tongue: English
Weight: 470 KB
Volume: 124
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(86)85014-x

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✦ Synopsis

The isotope exchange reaction between hydrogen and deuterium was studied in incident and reflected shock waves over the temperature range 120%1800 K by vacuum ultraviolet absorption spectroscopy. The observed exchange reaction ensued after long induction periods at rates that proved to account for the amounts of exchange previously seen in single-pulse shock-tube and reflected-wave mass-spectrometric investigations. From the absence of detectable reaction during the induction period, lower bounds of 70 and 45 kcal were placed on the barriers to molecular exchange in four-and six-center transition structures, respectively.

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