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  • 1
    Electronic Resource
    Electronic Resource
    Kinetics of the initial stage of isothermal gas phase formation (1993)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 98 (1993), S. 4690-4699 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: A theoretical description is proposed of the kinetics of the initial stage of gas phase formation in supersaturated liquids at constant temperature. General expressions are given for the time dependence of the number N of bubbles nucleated, of the probability P of appearance of at least one nucleus bubble and of the total volume Vg of the newly formed gas phase in the case of progressive or instantaneous bubble nucleation. Different definitions of the critical supersaturation for gas phase formation are considered and their experimental applicability is discussed. The general results are applied to the particular cases of gas phase formation at constant and steadily declining pressure and the corresponding time dependence of N, P, and Vg is obtained. Expressions for the critical supersaturation are also derived and it is found that this quantity can be rather sensitive to the rate of pressure decline when gas phase formation occurs via instantaneous bubble nucleation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.465065
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Thermodynamics of wax precipitation in petroleum mixtures (1996)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 42 (1996), S. 239-248 
    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: A thermodynamic framework is developed for calculating wax precipitation in petroleum mixtures over a wide temperature range. The framework uses the experimentally supported assumption that precipitated wax consists of several solid phases; each solid phase is described as a pure component or pseudocomponent that does not mix with other solid phases. Liquid-phase properties are obtained from an equation of state. Calculated wax-precipitation data are in excellent agreement with experimental results for binary and multicomponent hydrocarbon mixtures, including petroleum.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690420120
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Letters to the editor (1997)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 43 (1997), S. 1372-1374 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690430529
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    Paper (German National Licenses)
    Fulltext
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