The Mechanism of Electrochemical Oxidation of Organic Fuels

Piersma, Bernard J.; Gileadi, E.

doi:10.1007/978-1-4684-0913-0_2

Cited by 8 publications

(6 citation statements)

References 185 publications

(155 reference statements)

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“…The existence of adsorbed hydrogen and oxygen has definitely been confirmed in many experiments [5]. For the case of platinum, for example, the surface area measured from the charge calculated in anodic stripping of ads H , and that obtained from cathodic stripping of ads O agree well, and both agree with the surface area determined from measurement of capacitance in the double layer region, where no Faradaic reaction takes place.…”

Section: Adsorption Of Hydrogen and Oxygensupporting

confidence: 60%

“…Stepwise Deposition of a Divalent Ion Consider the deposition of a divalent ion, such as Fe 2+ , from a simple solution that does not contain any complexing agents. This is usually written in two steps such as [5] The subscript in s Fe cry indicates that the atom has now become part of the crystal lattice of the electrode. Now, it is well known that monovalent iron does not exist in an aqueous solution, because it would be highly unstable.…”

Section: The Formation Of Adsorbed Intermediatesmentioning

confidence: 99%

“…The adsorption of atomic hydrogen on platinum and some of the platinum-group metals has been observed by many investigators since the early days of electrochemistry (c.f. ref [5] and further references therein). The adsorption process involves the discharge of a proton, in a reaction that can be written in simplified form as…”

Section: Adsorption Of Hydrogen and Oxygenmentioning

confidence: 99%

“…The amount of hydrogen adsorbed on platinum and similar metals has been determined by anodic stripping [5]. Full coverage can be related to the number of sites (i.e.…”

Section: Adsorption Of Hydrogen and Oxygenmentioning

confidence: 99%

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Time-Resolved Kinetics of Electrode Reactions

Gileadi

2006

ECS Trans.

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Tribute is given to the personality and the work of Dr. S. Srinivasan. A discussion of the different time scales at which electrode processes take place, and the consequence of this on the interpretation of the mechanism of electrode reactions are discussed. One of the tenets of the Marcus theory of electron transfer is the Born-Oppenheimer approximation, namely the fact that electron transfer if extremely fast compared to the movement of nuclei. The consequence of this principle is discussed for complex electrode reactions. of primarily two types: (a) the formation of unstable intermediates, which are assumed to be stabilized by adsorption (b) metal deposition and dissolution. In both cases electron transfer would lead to the formation of highly unstable intermediates. Thus, although the final state can be quite stable, a mechanism involving electron transfer is not likely to be followed.

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Section: Adsorption Of Hydrogen and Oxygensupporting

confidence: 60%

Section: The Formation Of Adsorbed Intermediatesmentioning

confidence: 99%

Section: Adsorption Of Hydrogen and Oxygenmentioning

confidence: 99%

“…The amount of hydrogen adsorbed on platinum and similar metals has been determined by anodic stripping [5]. Full coverage can be related to the number of sites (i.e.…”

Section: Adsorption Of Hydrogen and Oxygenmentioning

confidence: 99%

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Time-Resolved Kinetics of Electrode Reactions

Gileadi

2006

ECS Trans.

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“…ref. (16)]. The present results indicate that such a mechanism cannot continue at potentials negative to 0.3v in H2SO4 at Pt electrodes at 25~ After sufficient interaction of Had and CO2 the formic acid dissociation could not proceed on a major fraction of the electrode surface, because of the blocking effect of CO2.…”

Section: This Work Gives Qualitative Confirmation Of the Experimental...mentioning

confidence: 67%

Interaction of Carbon Dioxide with Hydrogen Chemisorbed on a Platinum Electrode

Piersma

Warner²,

Schuldiner³

1966

J. Electrochem. Soc.

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The effect of CO2 on the oxidation of hydrogen atoms chemisorbed on a Pt electrode has been examined with potentiostatic and transient galvanostatic techniques. The results indicate that CO2 is not reduced, but that Hnormalad oxidation is inhibited by CO2 , or possibly HCO3− . Under these conditions the inhibited or blocked Had is stable at potentials negative to 0.3v (vs. NHE). Dissociation of formic acid to Hnormalad and CO2 may inhibit the further oxidation of HCOOH by a similar Hnormalad‐CO2 blocking mechanism.

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