✦ LIBER ✦

Rate coefficients for O + H2 → OH + H and O + D2 → OD + D by kinetic laser absorption spectroscopy in shock waves

✍ Scribed by Hui-Xing Yang; Kuan Soo Shin; William Gardiner

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 521 KB
Volume: 207
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(93)85013-e

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✦ Synopsis

Rate coefficient expressions for O+H,-+OH+H (5H) and O+D+OD+D (5D) over the temperature ranges 1600-2250 and 2370-3390 K, respectively, of &,=3.7x 10L4exp( -65 k.l/RT) and k5~=4.7~ lO'*exp( -74 kJ/RT) cm3 mol-' s-i were derived from laser absorption spectroscopic measurements in shock-heated H2-02-Ar, HTN20-Ar and D2-02-Ar mixtures. The expression ksD= 1.2 x 10' T *.72 exp ( -4880/T) cm3 mol-' s-' was derived for the temperature range 340-3390 K by combining our measurements with those of earlier studies. The isotope effect kSH/ksD was found to be in agreement with theoretical expectation in the temperature range studied

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