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Electrosynthesis of 4,4′-dinitroazobenzene on PbO2 electrodes

Authors:	S Abaci U Tamer K Pekmez A Yildiz

Affiliation:	(1) Faculty of Science, Department of Chemistry, Hacettepe University, 06532 Beytepe-Ankara, Turkey;(2) Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Gazi University, 06330 Etiler-Ankara, Turkey

Abstract:	Parameters which affect the electrosynthesis of 4,4-dinitroazobenzene from p-nitroaniline on platinum and PbO₂ electrodes were investigated and optimum conditions were determined. Maximum conversion efficiency for electrosynthesis was 95% with a pure -PbO₂ electrode. It was found that the electrocatalytic activity of a PbO₂ electrode depends upon its / ratio and its degree of crystallinity. The effects of the added base and water on the conversion efficiency were also elucidated.

Keywords:	-PbO₂" target="_blank">gif" alt="agr" align="BASELINE" BORDER="0">-PbO₂ -PbO₂" target="_blank">gif" alt="beta" align="MIDDLE" BORDER="0">-PbO₂ 4 4-dinitroazobenzene" target="_blank">gif" alt="prime" align="BASELINE" BORDER="0">-dinitroazobenzene electrooxidation p-nitroaniline
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