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  • Polymer and Materials Science  (65)
  • Chemical Engineering  (10)
  • 1
    Electronic Resource
    Electronic Resource
    The correlation of vapor-liquid equilibria of light hydrocarbons in paraffinic and in aromatic solvents at low temperatures and elevated pressures (1968)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 14 (1968), S. 92-100 
    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 correlational procedure was developed to predict the vapor liquid equilibrium behavior of light hydrocarbons in heavier hydrocarbon solvents at low temperatures and elevated pressures. The method is applicable to paraffinic as well as aromatic solvents.The method employed the Benedict-Webb-Rubin equation of state to predict the vapor phase fugacities. Methane liquid fugacities in the various hydrocarbon solvents were based upon Henry's law which included terms to account for compositional and pressure effects. The liquid fugacities for ethane and propane were calculated using infinite dilution data to modify empirically the Scatchard-Hildebrand equation. Excellent agreement between the correlated and low-temperature data available on this class of systems was obtained.
    Additional Material: 14 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690140118
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  • 2
    Electronic Resource
    Electronic Resource
    Perturbation chromatography in chemically reactive systems (1970)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 16 (1970), S. 426-435 
    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 one-dimensional column is considered in which a number of chemical reactions with arbitrary kinetics may take place among an arbitrary number of components. Initially, the column is in complete chemical and physical equilibrium. A localized small perturbation is introduced in the column at time t = 0. It is shown that, in general, this initial perturbation separates into a definite number of peaks which move with different velocities. Each peak broadens according to an asymptotic relation, depending on a characteristic dispersion coefficient. If n is the number of components, m the number of independent reactions, and σ the number of equations of state to be considered, there are n-m-σ peaks. These peaks do not correspond to single substances as in classical chromatography, but each peak has an eigencomposition. The velocities of the peaks are derived as functions of stoichiometry and equilibrium data. The dispersion coefficients depend, in addition, on the kinetics of the chemical reactions and on the rate of mass transfer. Thus, perturbation chromatography offers a means of determining both equilibrium and rate data. The theory is illustrated by means of two examples.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690160320
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  • 3
    Electronic Resource
    Electronic Resource
    Improvement of the performance of a fixed-bed catalytic reactor by relaxed steady state operation (1971)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 17 (1971), S. 550-553 
    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: The relaxed steady state operation of a tubular fixed-bed catalytic reactor under control of the inlet composition is investigated. It is shown that the performance of such a reactor can be improved under certain conditions by periodically varying inlet concentrations rather than keeping these concentrations time invariant.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690170313
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  • 4
    Electronic Resource
    Electronic Resource
    Thin liquid films: Fundamentals and applications. I. B. Ivanov, Ed., Marcel Dekker, Inc., New York, 1988, 1160 pp., $195.00 (1989)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 35 (1989), S. 1403-1404 
    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.690350825
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  • 5
    Electronic Resource
    Electronic Resource
    Induced transport in pulsating flow (1971)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 17 (1971), S. 621-626 
    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: The dispersion coefficient is evaluated in a general linear chromatographic system in which the velocity field is time periodic. Computations are carried out in detail for two examples. In the first example there are two phases and the flow pattern is simple. In the second example there is only one phase and the flow pattern is complex. The latter example is closely related to Taylor diffusion. Depending on the relative size of certain dimensionless parameters, one can distinguish four regions of different qualitative behavior of the system: molecular diffusion region, Taylor region, constant amplification region, and boundary transport region.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690170326
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  • 6
    Electronic Resource
    Electronic Resource
    Cyclic operation of reaction systems: Effects of heat and mass transfer resistance (1971)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 17 (1971), S. 818-825 
    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: No. Abstract.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690170410
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  • 7
    Electronic Resource
    Electronic Resource
    Calculation of dispersion coefficients by means of moments (1971)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 17 (1971), S. 613-620 
    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: The problem of evaluating the coefficient of dispersion in a general linear two-component chromatographic system is equivalent to a steady state source problem in multidimensional Euclidean space. The equivalence of the two physical problems provides an intuitive insight into the contributions of different transport processes to dispersion. For a wide class of systems the dispersion coefficient can be expressed as the maximum of a functional. This can be utilized in the numerical evaluation of dispersion coefficients and in the application of perturbation techniques.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690170325
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  • 8
    Electronic Resource
    Electronic Resource
    Auslegung, Konstruktion und Erprobung einer kathodisch zu schützenden Kreiselpumpe aus G-SnBZ 10Herrn Professor Dr. Otto Bayer zum 70. Geburtstag gewidmet (1972)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 23 (1972), S. 967-973 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Sizing, design and testing of a centrifugal pump of tin bronze G-SnBZ 10 to be cathodically protectedThe well-known method of cathodic corrosion protection is applied to centrifugal pumps. A one-stage centrifugal pump is described to which impressed current is applied for the protection of the casing, a special rotor serving as the anode; a second anode is accommodated in the pressure side connection. Protection current data are shown for a pump casing of tin bronze and a rotor of platinized titanium under 0.1 N hydrochloric acid; potential applications ase discussed.
    Notes: Das bekannte Verfahren des kathodischen Korrosionsschutzes wird auf Kreiselpumpen übertragen. Eine Fremdstrom-gespeiste einstufige Kreiselpumpe wird beschrieben, bei der das Gehäuse kathodisch geschützt wird und ein spezielles Laufrad als Anode dient. Eine weitere Anode befindet sich im Druckstutzen.Am Beispiel eines aus Zinnbronze bestehenden Pumpengehäuses und eines Laufrades aus platiniertem Titan werden die Schutzstromdaten bei Beaufschlagung mit warmer 0,1 n-Salzsäure mitgeteilt und Anwendungsmöglichkeiten aufgezeigt.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19720231103
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  • 9
    Electronic Resource
    Electronic Resource
    Entwicklung, Verarbeitung und Einsatz des stickstofflegierten, hochmolybdänhaltigen Stahles X 3 CrNiMoN 17 13 5Herrn Professor Dr. Otto Bayer zum 70. Geburtstag gewidmet (1972)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 23 (1972), S. 973-983 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Development, processing and use of nitrogen alloyed high molybdenum steel X3CrNiMoN 17 13 5Addition of 0,15% Ni to the steel X5-CrNiMo 17 13 delays the precipitation of intermetallic phases and chromium carbides. The nitrogen containing steel can be welded up to a plate thickness of 30 mm without precipitation; hot cracking has not been observed either. The weld metal corresponds to the base material with respect to ductility and corrosion resistance. It is resistant to pitting, crevice corrosion and stress corrosion cracking, in particular in mixed acids. Successful applications include textile industry (bleaching equipment, heating equipment), shipbuilding (driving shafts, exhaust gas coolers, waste gas condenser tubing), water desalination equipment, nuclear industry (evaporator for radioactive waste water, processing of radioactive waste in fluoride containing nitric acid), chemical industry (pressure container material, heat exchangers for brackish water).
    Notes: Zusatz von 0,15% N zum Stahl X5-CrNiMo 17 13 verzögert die Ausscheidung von intermetallischen Phasen und Cr-Carbiden. Der stickstoffhaltige Stahl läßt sich dann bis zu Blechdicken von etwa 30 mm schweißen, ohne daß Ausscheidungen auftreten; auch Warmrissigkeit wurde nicht beobachtet. Das Schweißgut entspricht hinsichtlich Zähigkeit und Korrosionsbeständigkeit dem Grundwerkstoff. Er ist gut beständig gegen Lochfraß, Spalt- und Spannungsrißkorrosion, besonders auch in Mischsäuren. Bisherige erfolgreiche Anwendungen umfassen die Textilindustrie (Bleichapparate, Dämpfapparate), den Schiffbau (Schiffswellen, Motorgaskühler, Abgaskondensatleitungen), Meerwasserentsalzungsanlagen, Atomtechnik (Eindampfer für radioaktive Abwässer, Aufbereitung radioaktiver Abfallprodukte in fluoridhaltiger Salpetersäure), chemische Industrie (Druckbehälterwerkstoff, Wärmeaustauscher für Brackwasser).
    Additional Material: 27 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19720231104
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  • 10
    Electronic Resource
    Electronic Resource
    Chemical imaging by scanning force microscopyWe thank R. Kranwctvogcl for support during the preparation of tip and sample. (1995)
    Weinheim : Wiley-Blackwell
    Advanced Materials 7 (1995), S. 549-551 
    Details
    ISSN: 0935-9648
    Keywords: Chemistry ; Polymer and Materials Science
    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
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/adma.19950070607
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