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  • 1
    Electronic Resource
    Electronic Resource
    Polymer electrolyte-type electrochemical ozone generator with an oxygen cathode (1994)
    Springer
    Journal of applied electrochemistry 24 (1994), S. 489-494 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract A new electrochemical ozone generator which has a proton exchange polymer membrane as an electrolyte, pure water as a source material and an oxygen diffusion electrode as a cathode was proposed to eliminate hydrogen evolution on the cathode and also to reduce electrolytic power consumption. The device was evaluated under varied operating conditions changing current density, temperature and oxygen flow rate. The water permeable high performance gas electrode enabled current density operation over 1.0 A cm−2 without generating hydrogen gas in the cathode side outlet gas. The power consumption was successfully reduced to two thirds of that of the hydrogen evolution type electrolyzer over a period of three months' operation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00249847
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    A molten salt electrolytic process for recovering chlorine and ammonia from ammonium chloride. I (1980)
    Springer
    Journal of applied electrochemistry 10 (1980), S. 419-425 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Various electrolytic methods were examined for recovering chlorine, hydrogen and ammonia from by-product ammonium chloride produced in the ammonium chloride-soda process. Two methods, one based on an aqueous electrolysis and the use of an ion exchange membrane, and the other employing a molten metal cathode were considered possible. This series of papers aims at a detailed description of the latter process, which seems more interesting from the viewpoint of industrial exploitation. This paper briefly reviews the other electrolytic processes before describing the principle of the molten salt process and the study of the reaction between ammonium chloride and liquid metals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00614074
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Estimation of optimum anode geometry in chlor-alkali membrane cells (1989)
    Springer
    Journal of applied electrochemistry 19 (1989), S. 90-94 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract In order to explore the dependence of cell voltage on electrode geometries, precious metal oxide anodes (DSA®) with the following three kinds of geometries were constructed: an assembled strip with a parallel array (louvre type), a circularly perforated plate and a flattened mesh. Voltages in the membrane cell of a laboratory scale were measured with chlorine gas evolution in NaCl solution. The cell voltages exhibited a linear relation to a unit cell characteristic dimension as well as to the square of the per cent open area of the anode, as predicted from the theoretical analysis of the primary current distribution in the two-dimensional rectangular model cell. Therefore, small sizes of the iterative pattern unit reduced cell voltages. Slopes of the linear relation gave the increase in solution resistivity caused by the gas bubbles, indicating the presence of a bubble curtain around the anode.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01039395
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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