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Title: Electrochemical oxidation of C3 saturated alcohols on Co3O4 in alkaline
Authors: Sun, Shengnan
Sun, Libo
Xi, Shibo
Du, Yonghua
Anu Prathap, M.U.
Wang, Zilong
Zhang, Qichun
Fisher, Adrian
Xu, Zhichuan Jason
Keywords: Co3O4
C3 Saturated Alcohol
Issue Date: 2017
Source: Sun, S., Sun, L., Xi, S., Du, Y., Anu Prathap, M. U., Wang, Z., et al. (2017). Electrochemical oxidation of C3 saturated alcohols on Co3O4 in alkaline. Electrochimica Acta, 228, 183-194.
Series/Report no.: Electrochimica Acta
Abstract: In this work, we present a systematic study on the electrochemical oxidation of C3 saturated alcohols (propanetriol, 1,2-propanediol, 1,3-propanediol, 1-propanol, and 2-propanol) on Co3O4 in alkaline. Co3O4 electrode was prepared by electrodeposition of Co(OH)2 on graphite paper followed with a calcination step. The electro-oxidation of C3 saturated alcohols were investigated by a combination of cyclic voltammetry, multi-step chronoamperometry, and electrochemical impedance spectroscopy techniques in KOH solution. The electro-oxidation studies at Co3O4 electrode followed an activity trend in the following order: propanetriol (GLY) > 1,2-propanediol (1,2-P) > 1,3-propanediol (1,3-P) > 1-propanol (1-P) > 2-propanol (2-P). The NMR analysis of the oxidized products showed that C-C bond cleavage occurred faster in alcohols having adjacent hydroxyl groups. X-ray absorption near-edge structure (XANES) spectroscopy study showed that there was no significant difference in Co oxidation state in the absence and the presence of glycerol. It was also found that the KOH concentration influenced electro-oxidation of those alcohols bearing secondary hydroxyl group (GLY, 1,2-P, and 2-P) more dramatically than that of those primary alcohols (1.3-P and 1-P).
ISSN: 0013-4686
DOI: 10.1016/j.electacta.2017.01.086
Rights: © 2017 Elsevier Ltd.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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