Kinetics of Ethanol Electrooxidation at a Modified Platinum Electrode in 0.1M Perchloric acid
Atef, Y., Abd El Wanees, S., Hefny, M. (2015). Kinetics of Ethanol Electrooxidation at a Modified Platinum Electrode in 0.1M Perchloric acid. EKB Journal Management System, 16(AEROSPACE SCIENCES & AVIATION TECHNOLOGY, ASAT - 16 – May 26 - 28, 2015), 1-19. doi: 10.21608/asat.2015.22943
Y. Atef; S. Abd El Wanees; M. M. Hefny. "Kinetics of Ethanol Electrooxidation at a Modified Platinum Electrode in 0.1M Perchloric acid". EKB Journal Management System, 16, AEROSPACE SCIENCES & AVIATION TECHNOLOGY, ASAT - 16 – May 26 - 28, 2015, 2015, 1-19. doi: 10.21608/asat.2015.22943
Atef, Y., Abd El Wanees, S., Hefny, M. (2015). 'Kinetics of Ethanol Electrooxidation at a Modified Platinum Electrode in 0.1M Perchloric acid', EKB Journal Management System, 16(AEROSPACE SCIENCES & AVIATION TECHNOLOGY, ASAT - 16 – May 26 - 28, 2015), pp. 1-19. doi: 10.21608/asat.2015.22943
Atef, Y., Abd El Wanees, S., Hefny, M. Kinetics of Ethanol Electrooxidation at a Modified Platinum Electrode in 0.1M Perchloric acid. EKB Journal Management System, 2015; 16(AEROSPACE SCIENCES & AVIATION TECHNOLOGY, ASAT - 16 – May 26 - 28, 2015): 1-19. doi: 10.21608/asat.2015.22943

Kinetics of Ethanol Electrooxidation at a Modified Platinum Electrode in 0.1M Perchloric acid

International Conference on Aerospace Sciences and Aviation Technology
Article 48, Volume 16, AEROSPACE SCIENCES & AVIATION TECHNOLOGY, ASAT - 16 – May 26 - 28, 2015, May 2015, Page 1-19  XML PDF (412.59 K)
Document Type: Original Article
DOI: 10.21608/asat.2015.22943
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Authors
Y. Atef1; S. Abd El Wanees2; M. M. Hefny3
1Author for correspondence. Chemistry Administration, Cairo, Egypt.
2Chemistry Department, Faculty of Science, Zagazig University, Zagazig, Egypt.
3Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt.
Abstract
The present paper reports cyclic voltammetry (CV) studies on electrooxidation of ethanol at a modified Pt electrode surface in 0.1M perchloric acid solution. The activity of Pt electrode towards ethanol oxidation increases with increasing number of cycles and concentration of ethanol. Cyclic voltammetry was also used to investigate the electrochemical and thermochemical parameters related to electrooxidation of ethanol under the influence of temperature. The effect of temperature was carried out for a temperature range of 283–303 K. Apparent activation energies of the oxidation reactions on a modified Pt electrode were determined. The enhancement is discussed and attributed to the mechanism of oxidation that is likely to be dissociative chemisorptions involving electron transfer. Kinetic and thermodynamic parameters values for the electrooxidation process Ea*, ΔG*, ΔH* and ΔS* have been computed and discussed. The high activation energy for the process suggests that C–C bond cleavage is the rate determining step.
Keywords
Ethanol electrooxidation; modified Pt electrode
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