Experimental determination of the OH product yield from NH/sub 2/ + NO at 300 K
Conference
·
· J. Phys. Chem.; (United States)
OSTI ID:6953186
The branching ratio, ..cap alpha.. = k/sub 1b//k/sub 1a/, has been experimentally determined at 300 K for two product channels of the NH/sub 2/ + NO reaction: ..-->.. N/sub 2/H + OH (k/sub 1b/) and ..-->.. N/sub 2/H + OH (k/sub 1b/. The reaction was studied in a fast-flow tube reactor coupled to a modulated-beam mass spectrometer. CO was added to scavenge hydroxyl radicals via OH + CO ..-->.. CO/sub 2/ + H. Separate experiments and kinetic modeling results confirm that the scavenging efficiency is near unity so that (CO/sub 2/) is a good measure of (OH). The branching ratio, ..cap alpha.. = (OH)/(H/sub 2/O) = (CO/sub 2/)/(H/sub 2/O), was determined from CO/sub 2//sup +/ and H/sub 2/O/sup +/ ion intensities to be <0.15 at 300 K. This result is discussed as it relates to previous measurements and to the atmospheric chemistry of ammonia.
- Research Organization:
- General Motors Research Labs., Warren, MI
- OSTI ID:
- 6953186
- Conference Information:
- Journal Name: J. Phys. Chem.; (United States) Journal Volume: 90:25
- Country of Publication:
- United States
- Language:
- English
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Wed Mar 17 23:00:00 EST 1999
· Journal of Physical Chemistry A: Molecules, Spectroscopy, Kinetics, Environment, amp General Theory
·
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Fri Dec 30 23:00:00 EST 1994
·
OSTI ID:93226
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NITROGEN COMPOUNDS
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NUMERICAL DATA
ORGANIC COMPOUNDS
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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AMIDES
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
DATA
EXPERIMENTAL DATA
HYDROXYL RADICALS
INFORMATION
KINETICS
MASS SPECTROSCOPY
MEDIUM TEMPERATURE
NITRIC OXIDE
NITROGEN COMPOUNDS
NITROGEN OXIDES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
RADICALS
REACTION KINETICS
SPECTROSCOPY
YIELDS