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  • 1
    Electronic Resource
    Electronic Resource
    A study of the reactions of fluorine with hydrogen and methane in the initiation phase using a miniature tubular reactor (1981)
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 13 (1981), S. 39-58 
    Details
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A small tubular reactor having an inner diameter of 1-2 mm andused as the source in a molecular beam apparatus is described in detail. This arrangement allows the study of fast reactions with reaction times smaller than 1 msec. The preexplosive reaction phase between F2 and H2 and CH4, respectively, is investigated to find out the initiation reactions. In the F2/H2 reaction, initiation is brought about by heterogeneous generation of F atoms or some other surface reaction. Evidence is also obtained for chain branching reactions. In the F2/CH4 case the dominant initiation reaction is the homogeneous reaction CH4 + F2 → CH3 + HF + F. The rate constant for the reaction between 300 and 400 K is 1012.3±0.3 exp[-47 ± 8 kJ/mol/RT] cm3/mol sec. The analysis of the experimental data also yields the rate constant for the propagation reaction CH3 + F2 → CH3 F + F, which is 1012.3±0.3 exp[-4.6 ±2.1 kJ/mol/RT] cm3/mol sec.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/kin.550130105
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Erratum (1981)
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 13 (1981), S. 693-693 
    Details
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/kin.550130709
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Direct detection of CF2 and computer modeling of its appearance in the fluorination of CH2F2 (1982)
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 14 (1982), S. 457-469 
    Details
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The branched chain reaction between CH2F2 and F2 is studied in a miniature tubular reactor having a diameter of 1.1 mm. The gases at the end of the tube expand into a low-pressure chamber and are analyzed by molecular beam detection. The branching intermediate CF2 is detected directly at low ionization energies. An approximate quantitative reaction model for the fluorination of CH2F2 is proposed and discussed. The influence of the unknown rate constants in this scheme on the course of the reaction is examined. For the most reasonable set of rate constants the unknown rate constant for the branching reaction CF2 + F2 → CF3 + F at 550 K is found to be log k = 10.7 [cm3/mol·s].
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/kin.550140503
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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