ZfN: Search Results

1	Author	Dietrich Wabner, Fritz Hindelang, Rainer Huss	Requires 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

2	Author	HeinzP. Fritz, JordanisC G Thanos, DietrichW. Wabner	Requires 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

3	Author	Hans-Werner Frühauf, ErnstA. Koerner, Von Gustorf	Requires 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