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  • cupric oxide  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Electrochemical synthesis of cupric oxide powder Part I: Influence of pH (1998)
    Springer
    Journal of applied electrochemistry 28 (1998), S. 1405-1411 
    Details
    ISSN: 1572-8838
    Keywords: cupric oxide ; pH ; powder ; sodium sulfate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Electrochemical synthesis of cupric oxide powder (CuO) in alkaline sodium sulfate is of technological interest. As it is known that hydroxyl ions are needed for the formation of cupric oxide, according to the principal chemical reaction: Cu2+ + 2oH- → CuO+H2 The effect of pH (in the range from 7.50 to 10.80) on cupric oxide powder formation was investigated. Optimum conditions for cupric oxide powder synthesis, with respect to particle size, cell voltage, current efficiency and specific energy consumption were determined to be a pH7.5 and a current density of 4000Am−2. A significant effect of pH on the particle size and aggregation of the powder was confirmed by both galvanostatic measurements and particle size determination. The lowest powder particle sizes were obtained at pH7.5. Aggregation of powder particles at higher pH was also observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1003478412414
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Electrochemical synthesis of cupric oxide powder Part II: Process conditions (1999)
    Springer
    Journal of applied electrochemistry 29 (1999), S. 81-85 
    Details
    ISSN: 1572-8838
    Keywords: cupric oxide ; powder ; current density ; temperature ; sodium sulfate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Electrosynthesis of cupric oxide powder was carried out on a laboratory scale in an electrochemical cell under various experimental conditions. The electrolysis was appraised in terms of the particle size of the cupric oxide product and the anodic dissolution of the copper electrode. Using a previously determined pH value of 7.50, the other optimum electrolysis operating conditions established were a current density of 4000Am−2, temperature of 353K, and Na2SO4 concentration of 0.5m. The optimum values of current efficiency, cell voltage and specific energy consumption for the electrochemical synthesis of cupric oxide powder were determined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1003464914657
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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