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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 300 (1959), S. 130-141 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: By decomposition of mixed crystals of nickel oxalate and zinc oxalate in a hydrogen stream catalysts are obtained which are characterized by high activity for gas-phase reaction. Hydrogenation of acetone and benzene is complete at temperatures far below 100°. With a high content of zinc the catalysts can excellently be used for dehydrogenation of naphthenes without any losses. Since paraffines do not tend to be destructively hydrogenated, a dehydrogenation of gasoline fractions containing naphthenes is possible.
    Notes: Durch Zersetzung von Nickeloxalat-Zinkoxalat-Mischkristallen im Wasserstoffstrom werden Katalysatoren erhalten, die sich bei Reaktionen in der Gasphase durch hohe Aktivität auszeichnen. Die Hydrierung von Aceton und Benzol verläuft schon bei Temperaturen weit unter 100° vollständig. Bei hohem Zinkgehalt sind die Katalysatoren zur verlustlosen Dehydrierung von Naphthenen im Wasserstoffstrom vorzüglich geeignet. Da Paraffine nicht in nennenswertem Maße der destruktiven Hydrierung unterliegen, ist eine Dehydrierung von naphthenhaltigen Benzinfraktionen möglich.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 14 (1974), S. 717-723 
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: During an investigation of the time for ignition of polymeric materials under the influence of radiant heating, it was found that the polymer surface reflectance-absorptance characteristics were a major factor in the variance of the ignition times. A subsequent research study was made of the reflectance-absorptance characteristics of those polymers used in the ignition testing. Reflectance values were obtained over the wavelength of 0.3 to 2.5 microns using a double-beam Cary model 14 spectrophotometer with an integrating sphere reflectometer and over the wavelengths of 1.0 to 10.0 microns using a Gier-Dunkle Hohlraum with a Perkin-Elmer spectrophotometer. Absorptance values were obtained by means of Kirchoff's Law,Drawings and graphs are included which illustrate the test apparatus and type of data collected. A table of average absorptances of several polymers are given and listed according to the particular type of heat source used. \documentclass{article}\pagestyle{empty}\begin{document}$$ \alpha _\lambda + r_\lambda = 1 $$\end{document} Average absorptances of the polymers over the monochromatic wavelength span of the heat sources were calculated using the equation \documentclass{article}\pagestyle{empty}\begin{document}$$ \alpha _{{\rm av}} = \frac{{\int_{\lambda _1 }^{\lambda _2 } {\alpha _\lambda e_\lambda d\lambda } }}{{\int_{\lambda _1 }^{\lambda _2 } {e_\lambda {\rm d}\lambda}}} $$\end{document} Mathematical analyses were developed and are presented for both the integrating sphere reflectometer and Gier-Dunkle Hohlraum unit.Drawings and graphs are included which illustrate the test apparatus and type of data collected. A table of average absorptances of several polymers are given and listed according to the particular type of heat source used.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: One method of predicting vaporization equilibrium ratios for the components of a multicomponent mixture is through the use of standard state liquid fugacities, standard state vapor fugacities, liquid phase activity coefficients, and vapor phase activity coefficients. The relationship among these variables will be shown.It is the purpose of this paper to present a method for evaluating the fugacities of the components of a multicomponent liquid mixture which is in equilibrium with its vapors; to present a method for evaluating the standard state fugacities of hypothetical liquids and to disclose these values for methane and ethane up to a reduced temperature of 1.6 and values for propane up to a reduced temperature of 1.3; to present the coincident derived values of the vaporization equilibrium constants, Z factors, and solubility parameters; and to show correlations of these values.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 17 Ill.
    Type of Medium: Electronic Resource
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