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  • 1
    Electronic Resource
    Electronic Resource
    Thermodynamics of Ferrous Sulphide (1951)
    [s.l.] : Nature Publishing Group
    Nature 168 (1951), S. 661-662 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The procedure adopted was to measure the composition of gas mixtures of hydrogen and hydrogen sulphide in equilibrium with powdered iron and ferrous sulphide heated to temperatures ranging from 720 to 1,258 K. The gases were circulated over the solids in a closed system, at such a rate that the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/168661b0
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Solution Thermodynamics in Metallic and Ceramic Solid Systems (1971)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Materials Research 1 (1971), S. 219-252 
    Details
    ISSN: 0084-6600
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ms.01.080171.001251
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  • 3
    Electronic Resource
    Electronic Resource
    Free Energy Functions and Deviations in Thermochemical Data Storage for Inorganic Compounds (1966)
    [s.l.] : Nature Publishing Group
    Nature 209 (1966), S. 198-199 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In considering means for preserving the results, the twin aspects of ease of access and accuracy of presentation often work against one another, and the earlier methods of using polynomial equations with temperature as a variable are becoming superseded by tables of the so-called free-energy ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/209198a0
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  • 4
    Electronic Resource
    Electronic Resource
    Solid oxide solutions as catalysts —A comparison with supported Pt (1990)
    Springer
    Catalysis letters 4 (1990), S. 43-48 
    Details
    ISSN: 1572-879X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Solid oxide solutions (SOS) of La, Sr and Cr of the formula La1-xSrxCrO3-β (where δ is the deviation from stoichiometry and 0 〈x 〈 0.5) exhibit catalytic activity for oxidation (CO-oxidation) which rivals that of a highly dispersed 0.5% Pt/alumina fume abatement catalysts. Hydrogenation (of propylene) activity is also manifest with the SOS formulation. Exposure of the SOS catalyst to H2S does not reduce catalytic activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00764869
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  • 5
    Electronic Resource
    Electronic Resource
    Electrolytic removal of oxygen from gases by means of solid electrolyte (1972)
    Springer
    Journal of applied electrochemistry 2 (1972), S. 289-299 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Nitrogen gas, containing controlled amounts of free oxygen and water or carbon dioxide, was de-oxidized by means of a solid oxide electrolyte tube at temperatures from 800 to 1000°C and at applied voltages of 0.5–3.0 V. The oxygen potential of the resulting gas mixture was measured simultaneously. The efficiency of the removal of oxygen, present in free or combined state, is shown as a function of the initial oxygen content $$P_{H_2 O}$$ , $$P_{CO_2 }$$ temperature and applied voltage. The electrolysing current/applied voltage relationships obtained indicate that the resistance of the electrolysing circuit is mainly determined by the initial free oxygen content of the gas mixture. The behaviour of solid oxide electrolytes with externally applied potentials corresponding to pure ionic and mixed conduction is also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00615276
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  • 6
    Electronic Resource
    Electronic Resource
    Effect of surface area on CO oxidation by the perovskite catalysts La1−x Sr x MO3-δ (M = Co, Cr) (1993)
    Springer
    Catalysis letters 18 (1993), S. 337-343 
    Details
    ISSN: 1572-879X
    Keywords: Surface area ; CO oxidation ; perovskites
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The catalytic oxidation of carbon monoxide by two compounds in the system La0.8 Sr0.2MO3-δ (M = Co, Cr) was measured at different BET surface areas of the oxide materials. The light-off temperature was found to decrease with increasing surface area up to a certain level beyond which it remained constant for the cobalt-containing compound. This limiting value could not be attained for the chromium-containing compound because of equilibration problems in the preparation. As the active catalytic area as distinct from the total (BET) catalyst area was not clarified, these preliminary results show the need for further inquiry.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00765279
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  • 7
    Electronic Resource
    Electronic Resource
    The production of refractory crystals by vapour transport reactions (1968)
    Springer
    Journal of materials science 3 (1968), S. 635-642 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A thermodynamic analysis is made of the conditions under which compounds of high melting point can be efficiently transported in the gas phase by means of volatile compounds of limited stability. The possibilities of transporting silicon carbide, tantalum silicides, and uranium borides by this means are discussed to illustrate the method of calculation. A simple graphical method of constructing simultaneous tangents to three matched integral free energy diagrams is illustrated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00757911
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