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  • 1
    Publication Date: 2005-11-27
    Description: Rate constant determination for ignition of hydrogen carbon monoxide oxygen system
    Keywords: THERMODYNAMICS AND COMBUSTION
    Type: ET. AND THERMODYN. IN HIGH TEMP. GASES 1970; P 105-117
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  • 2
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    In:  CASI
    Publication Date: 2004-12-03
    Description: The objective of this research is to demonstrate the feasibility of using a catalytic reactor as a tool to study soot formation from the fuel rich side of the soot limit (null set = 3 - 6). The experimental approach to be taken in the first phase of the research is to document that a hydrocarbon fuel can be burnt at very rich equivalence ratios without forming soot. A simple mono-component fuel, iso-octane, will be used as the test fuel. To insure that combustion is uniform across the catalyst bed, measurements will be made of the fuel-air equivalence ratio profile across the inlet and the temperature and product distribution across the outlet. Phase Two will be to use this environment as a testing ground for determining the effect the structure of a hydrocarbon fuel has on its tendency to form soot. Various amounts of organic compounds such as benzene will be added to the iso-octane and the reaction products studied. Other compounds to be tested will xylene, toluene, and naphthalene.
    Keywords: INORGANIC AND PHYSICAL CHEMISTRY
    Type: Oxidation Kinetics and Soot Formation: Research Review; p 35-38
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  • 3
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    In:  Other Sources
    Publication Date: 2011-08-11
    Keywords: unknown
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  • 4
    Publication Date: 2011-08-12
    Description: Scattered radiation effects on emission measurements in shock tubes, noting apparent dissociation rate of carbon dioxide
    Keywords: THERMODYNAMICS AND COMBUSTION
    Type: ; ADEMIE DES SCIENCES
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  • 5
    Publication Date: 2018-12-01
    Description: Recombination of carbon monoxide and atomic oxygen in expansion wave at high temperature in single pulse shock tube
    Keywords: CHEMISTRY
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  • 6
    Publication Date: 2019-05-24
    Description: Contact surface tailoring of reflected shock wave interaction with boundary layer in real shock tubes
    Keywords: FLUID MECHANICS
    Type: NASA-TN-D-3043
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  • 7
    Publication Date: 2019-05-21
    Description: Dissociation rate of carbon dioxide diluted with argon - shock tube determinations
    Keywords: FACILITIES, RESEARCH, AND SUPPORT
    Type: NASA-RP-51
    Format: application/pdf
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  • 8
    Publication Date: 2019-05-29
    Description: Equilibrium pressure measured after interaction of reflected shock with contact surface to determine tailored conditions in real shock tubes
    Keywords: FLUID MECHANICS
    Type: NASA-TM-X-56735
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  • 9
    Publication Date: 2019-06-28
    Description: Exponential free radical growth constants have been measured for ethane carbon monoxide oxygen mixtures by monitoring the growth of oxygen atom concentration as manifested by CO flame band emission. Data were obtained over the temperature range of 1200 to 1700 K. The data were analyzed using an ethane oxidation mechanism involving seven elementary reaction steps. Calculated growth constants were close to experimental values at lower temperatures, up to about 1400 K, but at higher temperatures computed growth constants were considerably smaller than experiment. In attempts to explain these results additional branching reactions were added to the mechanism. However, these additional reactions did not appreciably change calculated growth constants.
    Keywords: INORGANIC AND PHYSICAL CHEMISTRY
    Type: NASA-TM-87068 , E-2574 , NAS 1.15:87068
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  • 10
    Publication Date: 2019-06-28
    Description: An experimental program on the catalytic oxidation of iso-octane demonstrated the feasibility of the two-stage combustion system for reducing particulate emissions. With a fuel-rich (phi = 4.8 to 7.8) catalytic combustion preburner as the first stage the combustion process was soot free at reactor outlet temperatures of 1200 K or less. Although soot was not measured directly, its absence was indicated. Reaction products collected at two positions downstream of the catalyst bed were analyzed on a gas chromatograph. Comparison of these products indicated that pyrolysis of the larger molecules continued along the drift tube and that benzene formation was a gas-phase reaction. The effective hydrogen-carbon ratio calculated from the reaction products increased by 20 to 68 percent over the range of equivalence ratios tested. The catalytic partial oxidation process also yielded a large number of smaller-containing molecules. The fraction of fuel carbon in compounds having two or fewer carbon atoms ranged from 30 percent at 1100 K to 80 percent at 1200 K.
    Keywords: INORGANIC AND PHYSICAL CHEMISTRY
    Type: NASA-TP-2498 , E-2604 , NAS 1.60:2498
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