Sulfur anodes, sacrificial

Other methods of preparing tertiary bismuthines have been used only to a limited extent. These methods iaclude the electrolysis of organometaUic compounds at a sacrificial bismuth anode (54), the reaction between a sodium—bismuth or potassium—bismuth alloy and an alkyl or aryl haUde (55), the thermal elimination of sulfur dioxide from tris(arenesulfiaato)bismuthines (56), and the iateraction of ketene and a ttis(dialkylainino)bismuthine (57). 

Foods such as meat, fish, and some vegetables contain sulfur-bearing amino acids that form volatile sulfur compounds during processing and storage. When these compounds react with iron, a black precipitate forms on the container and in most instances darkens the food. A small piece of aluminum welded to the tinplate can has been used to prevent container corrosion and sulfide staining in commercially canned hams. In this case, the aluminum acts as a sacrificial anode and stops the reaction with tin and iron that otherwise could occur at the small exposed tinplate areas (14). 

Although it does not deal with the direct redox processes of sulfur organic compounds, the use of sacrificial electrodes, both cathodes and anodes producing... 

The use of sulfur sacrificial anodes readily allows the activation of sulfur, principally in methylene chloride. The reaction takes place at rather positive potentials (at... 

Fig. 56 Photoaction spectra of WO3 in the presence of sacrificial electron doncHs (a) 20% methanol in 1 M sulfuric acid (b) 1 M formic acid/1 M sodium formate squares and circles anodically grown WO3 films in the presence of a bias equal to, respectively, 1.5 and 1 V vs SCE compared to a sol/gel WO3 film biased at 1.5 V vs SCE (triangles)...

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