2001
DOI: 10.1590/s0100-40422001000100009
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Eletroxidação do etanol em eletrodos de Ti/IrO2

Abstract: Ribeirão Preto -SP Recebido em 7/12/99; aceito em 15/6/00 ELECTRO-OXIDATION OF ETHANOL IN Ti/IrO 2 . It has been carried out an investigation of ethanol electro-oxidation on Ti/IrO2 electrodes. The experimental results show a high selectivity towards acetaldehyde formation thus, offering potential advantages in cost and availability of raw material. It has been observed that the electrode is partially blocked by a film formed after the oxidation of the starting material which can be removed by pulse technique … Show more

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Cited by 4 publications
(7 citation statements)
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“…Furthermore, proper control of direct chemical oxidation of primary alcohols to aldehydes is difficult to obtain, since further oxidation of aldehyde ͑steps 2 and 4͒ is observed readily. 11 Moreover, total degradation of ethanol, step 5, needs high overvoltage anode material, and is seldom reported for type II anodes. [8][9][10][11] Nevertheless, evidence of a mixed situation with competition between steps 2 and 4 were found for Ni-P/SnO 2 /Ti 16 and Pt-Ru electrodes.…”
Section: Resultsmentioning
confidence: 99%
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“…Furthermore, proper control of direct chemical oxidation of primary alcohols to aldehydes is difficult to obtain, since further oxidation of aldehyde ͑steps 2 and 4͒ is observed readily. 11 Moreover, total degradation of ethanol, step 5, needs high overvoltage anode material, and is seldom reported for type II anodes. [8][9][10][11] Nevertheless, evidence of a mixed situation with competition between steps 2 and 4 were found for Ni-P/SnO 2 /Ti 16 and Pt-Ru electrodes.…”
Section: Resultsmentioning
confidence: 99%
“…11 Moreover, total degradation of ethanol, step 5, needs high overvoltage anode material, and is seldom reported for type II anodes. [8][9][10][11] Nevertheless, evidence of a mixed situation with competition between steps 2 and 4 were found for Ni-P/SnO 2 /Ti 16 and Pt-Ru electrodes. 7,13 The introduction of SnO 2 shows the activation of the ruthenium active sites as observed for the voltammetric parameters (i/q*;q f,N ) but, it is not sufficient for the reaction to proceed toward CO 2 formation.…”
Section: Resultsmentioning
confidence: 99%
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