Studies of the mechanism of the anodic oxidation of ethylene in acid and alkaline media

Wroblowa, H.; Piersma, Bernard J.; Bockris, J. O'm.

doi:10.1016/0022-0728(63)85009-3

Cited by 62 publications

(47 citation statements)

References 14 publications

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“…Their work, however, might be considered a forerunner to the present water discharge mechanism for the electrochemical oxidation of unsaturated hydrocarbons as suggested by Wroblowa, Pier sma and Bocknis. 32 , 33 Glasstone and Hickling also contributed one of several books on the subject of organic electrochemistry34 (others are by Fichter, 35 Allen,6 and Brockman 36 ).…”

Section: )mentioning

confidence: 98%

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The Mechanism of Electrochemical Oxidation of Organic Fuels

Piersma¹,

Gileadi²

1966

Modern Aspects of Electrochemistry No. 4

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Section: )mentioning

confidence: 98%

“…Then, (32) and E2 = E~ -/lX + ReE (33) where E'1 and E~ are the non-field dependent interactions of water in its two positions with the metal surface, e is a coordination number on the surface, E is the energy of interaction between dipoles, and R is given by…”

Section: Potential Dependence Of Adsorptionmentioning

confidence: 99%

The Mechanism of Electrochemical Oxidation of Organic Fuels

Piersma¹,

Gileadi²

1966

Modern Aspects of Electrochemistry No. 4

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“…J. Chem. Downloaded from www.nrcresearchpress.com by 34.214.212 obtained in reductive transients may also be analyzed theoretically (10,28). In particular, the variations of the magnitude and position of the pseudocapacitance maximum C,,, as a function of sweep rateg or current density gives information on polarization in the surface charging or discharging reactions (8,9).…”

Section: T I M E ( 5 )mentioning

confidence: 99%

Surface oxidation and reduction of platinum electrodes: Coverage, kinetic and hysteresis studies

Gilroy¹,

Conway²

1968

Can. J. Chem.

148

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Studies on the electrochemical formation and reduction of surface oxide at platinum electrodes have been carried out with particular reference to polarization and hysteresis effects in these processes. Comparisons between the results of galvanostatic and potential sweep techniques have been made for three types of surfaces of platinum electrodes prepared by: (a) heating in hydrogen; (6) heating in a flame; and (c) electrolytically forming platinum black surfaces. The dependence of the quantity of reducible oxide formed under prior steady-state potentiostatic conditions has been related to potential and time of anodic polarization. Polarization effects in the reduction of the surface oxide have been evaluated in terms of the potential dependence of the pseudocapacitance maximum for the oxide reduction process, and a mechanism for the reduction is suggested. The relative slowness of the reduction process is important in regard to the question of the role of oxide in the kinetics of electrocatalytic oxidations at platinum anodes. Hysteresis effects in anodic formation and cathodic reduction of the oxide are discussed in terms of a totally irreversible phase transition involving the ad-layer.

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“…The criterion for steadystate was that defined by Wroblowa et al (20), which tends to avoid complications that may arise due to long-term poisoning effects by intermediates and/or products of electrolysis. A typical current-potential relationship has been presented in Fig.…”

Section: Fig Imentioning

confidence: 99%

Anodic Oxidation of Ethylene Glycol on Platinum: a Mechanistic Study

Vijh¹

1971

Can. J. Chem.

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Anodic oxidation of ethylene glycol (EG) has been examined on platinum in 1 N HZSO, by means of potentiostatic and potentiodynamic techniques. Experimental results consist of steady-state, potentialcurrent relationships, reaction order derivatives, inhibition inflections, potentiodynamic profiles, and product analysis. Reaction mechanism has been proposed by combining these results with the previous information on the adsorption of EG on platinum, and on the p H effects in the anodic oxidation of EG. An analysis of these data has been presented in terms of kinetics under both Langmuir and Temkin conditions of electrode coverage. Inhibition inflections have been interpreted in terms of the kinetic theory of passivation effects proposed by Gilroy and Conway. It has been suggested that a chemical step of the type Pt.EG + Pt.OH -> Pt.R + HzO + Pt is the likely rate-determining-step (r.d.s.). The data indicate that quasi-equilibria prior to the r.d.s. are probably different in the ascending and descending direction of potentials (on the potentialxurrent curves), owing to the presence of different extents of oxygenated (Pt.OH or Pt.0) adsorbed species and the associated effects of coverage on kinetics.

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Studies of the mechanism of the anodic oxidation of ethylene in acid and alkaline media

Cited by 62 publications

References 14 publications

The Mechanism of Electrochemical Oxidation of Organic Fuels

The Mechanism of Electrochemical Oxidation of Organic Fuels

Surface oxidation and reduction of platinum electrodes: Coverage, kinetic and hysteresis studies

Anodic Oxidation of Ethylene Glycol on Platinum: a Mechanistic Study

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