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  • 1
    Electronic Resource
    Electronic Resource
    On the efficient generation of Arn–SH free-radical clusters via ultraviolet photolysis of closed-shell Arn–H2S complexes (1999)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 110 (1999), S. 5149-5158 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Detailed investigations are described for the generation of open-shell radical complexes formed by unimolecular photolysis of closed-shell van der Waals precursors. As a specific test case, ultraviolet photolysis of slit-jet cooled Arn–H2S (n≤2) complexes at both 248 and 193 nm are shown to yield Ar–SH and Ar2–SH radical cluster species with surprisingly high efficiencies. Analysis of the laser induced fluorescence (LIF) spectra indicates that the radical complexes are produced with extensive van der Waals stretch/bend and overall rotational excitation, which is consistent with a simple ballistic model of the dissociation dynamics. The LIF spectra obtained as a function of expansion distance downstream provide clear evidence for remarkably efficient cooling of the newly formed radical cluster species by low-energy collisions with jet-cooled inert gas atoms at (approximate)10 K. Spectrally resolved Ar–SH and Ar2–SH LIF signals have been investigated as a function of Ar composition, which yields information on relative branching ratios for fragmentary (e.g., Ar2–H2S→Ar–SH+H+Ar) and nonfragmentary (e.g., Ar2–H2S→Ar2–SH+H) photolysis events. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.478410
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  • 2
    Electronic Resource
    Electronic Resource
    "Gentle recoil'' synthesis of free-radical clusters via unimolecular photolysis of closed shell complexes (1996)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 105 (1996), S. 11360-11363 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: We describe a novel mechanism for efficient generation of open shell free-radical complexes via UV photolysis of the corresponding closed shell precursors. Ar–SH and Ar2–SH are detected following 248 nm excitation of Ar–H2S and Ar2–H2S. Of particular dynamical interest are the nonfragmentary channels in which no Ar atoms are ejected. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.472985
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  • 3
    Electronic Resource
    Electronic Resource
    Heat Transfer and Gas Holdup in a Sparged Contactor (1962)
    s.l. : American Chemical Society
    Industrial and engineering chemistry 1 (1962), S. 33-36 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/i260001a006
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  • 4
    Electronic Resource
    Electronic Resource
    DISTILLATION (1966)
    s.l. : American Chemical Society
    Industrial & engineering chemistry 58 (1966), S. 90-96 
    Details
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ie50683a013
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  • 5
    Electronic Resource
    Electronic Resource
    High Purity Propylene—A New Problem (1959)
    s.l. : American Chemical Society
    Industrial & engineering chemistry 51 (1959), S. 249-252 
    Details
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ie51394a025
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  • 6
    Electronic Resource
    Electronic Resource
    Mass transfer in a sparged contactor: Part I. Physical mechanisms and controlling parameters (1965)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 11 (1965), S. 73-79 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Studies of the air oxidation of aquoeus sodium sulfite solutions were made in simple bubble contacting columns of 3-, 4-, and 6-in. diameter. Superficial gas rates up to 300 lb./hr.-sq.ft. were used. Contacting action is described in detail, and comparisons with air-water data show the marked influence of small, ionic bubbles. Mass transfer and dynamic gas holdup data are presented, and the former are compared with mass transfer data for bubble-cap trays.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690110118
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  • 7
    Electronic Resource
    Electronic Resource
    Point efficiencies on sieve trays (1991)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 37 (1991), S. 1261-1264 
    Details
    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: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690370818
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  • 8
    Electronic Resource
    Electronic Resource
    A generalized correlation of diffusion coefficients (1956)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 2 (1956), S. 13-17 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Graphical correlations of binary gas diffusion coefficients are developed based on the Hirschfelder-Bird-Spotz diffusion equation and the theorem of corresponding states. A critical diffusion coefficient is defined and is used in turn for a definition of a “reduced” coefficient. The reduced diffusion coefficient is correlated graphically in generalized form in terms of the reduced properties of the diffusing gas. Using air as a reference “barrier” gas, the authors compared critical diffusion coefficients for various gases diffusing through a single barrier gas with the critical coefficients for these gases through air. This ratio, termed the barrier gas ratio, was found to be independent of the properties of the diffusing gas. A graphical correlation of the barrier gas ratio enables rapid estimation of a binary diffusion coefficient with a minimum of information.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690020104
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