Electrochemical mass spectrometry. Part 1.—Preliminary studies of propane oxidation on platinum

Bruckenstein, Stanley; Comeau, Joseph K.

doi:10.1039/dc9735600285

Cited by 31 publications

(14 citation statements)

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“…In this regard, the use of in situ Fourier transform infrared spectroscopy (FT‐IR) has been especially valuable 23–27. A very powerful, although less well‐known (compared to FT‐IR) technique is differential electrochemical mass spectrometry (DEMS), initially developed by Bruckenstein28 and later improved by Heitbaum 29, 30. This technique provides virtually unambiguous identification of transient species generated during an electrochemical reaction.…”

Section: Methodsmentioning

confidence: 99%

Electrocatalytic Oxidation of Formic Acid at an Ordered Intermetallic PtBi Surface

et al. 2003

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The electrocatalytic oxidation of formic acid at a PtBi ordered intermetallic electrode surface has been investigated using cyclic voltammetry, rotating disk electrode (RDE) voltammetry and differential electrochemical mass spectrometry (DEMS). The results are compared to those at a polycrystalline platinum electrode surface. The PtBi electrode exhibits superior properties when compared to polycrystalline platinum in terms of oxidation onset potential, current density, and a much diminished poisoning effect by CO. Using the RDE technique, a value of 1.4 x 10(-4) cm s-1 was obtained for the heterogeneous charge transfer rate constant. The PtBi surface did not appear to be poisoned when exposed to a CO saturated solution for periods exceeding 0.5 h. The results for PtBi are discussed within the framework of the dual-path mechanism for the electrocatalytic oxidation of formic acid, which involves formation of a reactive intermediate and a poisoning pathway.

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Section: Methodsmentioning

confidence: 99%

Electrocatalytic Oxidation of Formic Acid at an Ordered Intermetallic PtBi Surface

et al. 2003

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“…Bruckenstein and co-workers have shown that using electrochemical mass spectroscopy (EMS) it is possible to identify different adsorbate states of adsorbed organic species [15]. We have used differential electrochemical mass spectrometry (DEMS) in order to obtain quantitative information about ethene adsorbed on polycrystalline as well as on monocrystalline platinum surfaces [16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

The adsorption of ethene on vicinally stepped electrode surfaces and the effect of temperature

Löffler¹,

Bussar²,

Xiao³

et al. 2009

Journal of Electroanalytical Chemistry

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“…Compared to other techniques, mass spectrometry often offers higher sensitivity and more specific structural information concerning intermediates and final products of electrochemical reactions. The coupling of an electrochemical cell to a mass spectrometer (EC/MS) was first achieved by Bruckenstein et al. − Early EC/MS systems were limited to the determination of volatile species generated during electrochemical reactions. − In these devices, a porous membrane was used as the interface between the electrochemical cell and the mass spectrometer inlet. Gaseous species passing through the small pores were detected using electron ionization mass spectrometry.…”

mentioning

confidence: 99%

On-Line Linear Sweep Voltammetry−Electrospray Mass Spectrometry

Cole

1997

Anal. Chem.

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A three-electrode electrochemical cell coupled to an electrospray (ES) mass spectrometer has been developed and employed for on-line linear sweep voltammetry-ES mass spectrometry and electrochemical reaction studies. Generated in this type of electrochemistry/mass spectrometry (EC/MS) experiment are ion abundance vs potential profiles that provide molecular weight and structural information pertaining to intermediates and products of anodic oxidation of diphenyl sulfide, anodic pyridation of 9,10-diphenylanthracene, and reduction of nitrobenzene. Anodic oxidation of diphenyl sulfide in methylene chloride media at the platinum electrode yielded diphenyl sulfoxide and pseudodimer sulfonium ion along with products of further oxidation. The obtained ion abundance vs potential profiles offer additional evidence to corroborate previously proposed reaction mechanisms for pseudodimer sulfonium ion generation from diphenyl sulfide, as well as pyridine addition to DPA radical cation also in methylene chloride at the platinum electrode. From the latter experiment, a newly found reaction product, [DPA(py) - H](+), is reported. Despite the inherent tendency of ES devices to induce oxidation processes in the positive ion mode, intermediates and products of nitrobenzene reduction in nonaqueous and organic/water media were detected in both negative and positive ES modes.

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Electrochemical mass spectrometry. Part 1.—Preliminary studies of propane oxidation on platinum

Cited by 31 publications

References 0 publications

Electrocatalytic Oxidation of Formic Acid at an Ordered Intermetallic PtBi Surface

Electrocatalytic Oxidation of Formic Acid at an Ordered Intermetallic PtBi Surface

The adsorption of ethene on vicinally stepped electrode surfaces and the effect of temperature

On-Line Linear Sweep Voltammetry−Electrospray Mass Spectrometry

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