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1979 (1)
1978 (1)
1976 (1)
1Author    Dietrich Wabner, Fritz Hindelang, Rainer HussRequires cookie*
 Title    Eine Bleidioxid-Bezugselektrode A Lead Dioxide Reference Electrode  
 Abstract    For research work in nitric acid and during the deposition of lead dioxide from nitric baths a reference electrode has proven its value, which consists of a lead dioxide layer on a titanium carrier. Its potential against n.h.e. lies at 1.455 + 0.002 V in IN Pb(N03)2 + 0.1 N HNO3 at 295 K. This space-saving electrode can be used in the same electrolyte. It is stable against temperature variations and electronic control currents. 
  Reference    Z. Naturforsch. 33b, 1357—1359 (1978); eingegangen am 24. Juli 1978 
  Published    1978 
  Keywords    Reference Electrode, Lead Dioxide, Nitric Acid 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-1357.pdf 
 Identifier    ZNB-1978-33b-1357 
 Volume    33 
2Author    HeinzP. Fritz, JordanisC G Thanos, DietrichW. WabnerRequires cookie*
 Title    Electrochemical Syntheses, XVII [1] Ozone Synthesis by Electrolysis of Water  
 Abstract    Dimensionally stable lead dioxide anodes on a titanium substrate [2, 3] were tested for application in ozone electrosynthesis in a variety of aqueous electrolytes. At room tem-perature an ozone concentration of up to 13% by weight in the anodic gas composed of O3 and O2 is attained by using an aqueous phosphate electrolyte. 
  Reference    Z. Naturforsch. 34b, 1617—1627 (1979); received August 16 1979 
  Published    1979 
  Keywords    Ozone, Electrosynthesis, Lead Dioxide, Sulphate, Phosphate 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-1617.pdf 
 Identifier    ZNB-1979-34b-1617 
 Volume    34 
3Author    Hans-Werner Frühauf, ErnstA. Koerner, Von GustorfRequires cookie*
 Title    Elektronenübertragungsreaktionen, I Produktanalysen der Einelektronen-Oxidation von Olefinen mit Ferriin oder Bleidioxid in wäßriger und methanolischer Lösung Electron Transfer Reactions, I Product Analyses of One-Electron Oxidations of Olefins by Ferriin or Lead Dioxide in Aqueous and Methanolic Solutions  
 Abstract    The oxidation of the substituted ethylenes, 2,3-dimethylbutene-2 (1), 2-methylbutene-2 (8), and a-methylstyrene (13), by ferriin or lead dioxide in water and/or methanol has been studied. Product analyses of the reactions, which lead to kinetically controlled product distributions, showed that lead dioxide, just as ferriin, reacts as a one-electron-oxidant. The product distributions, which arise from further reactions of the primary intermediates. i.e. the radical cations formed via one-electron transfer, were found to depend on sub-stituents, acidity and solvent. The results are consistent with three separate reaction paths of the radical cation, each of which leads to specific products. The radical cation can either deprotonate, be nucleophilicly attacked by solvent, or lead to dimeric products. The first two possibilities only are observed in the oxidation of 1 and 8, while only the latter two are found in the oxidation of 13. 
  Reference    (Z. Naturforsch. 31b, 427—436 [1976]; eingegangen am 28. November 1975) 
  Published    1976 
  Keywords    One Electron Transfer, Ferriin, Lead Dioxide, Olefin Radical Cations, Product Analyses 
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 TEI-XML for    default:Reihe_B/31/ZNB-1976-31b-0427.pdf 
 Identifier    ZNB-1976-31b-0427 
 Volume    31