๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

On the hydrogen evolution during the electrochemical oxidation of aldehydes at Ib metals

โœ Scribed by N.A. Anastasijevic; H. Baltruschat; J. Heitbaum

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
476 KB
Volume
38
Category
Article
ISSN
0013-4686

No coin nor oath required. For personal study only.

โœฆ Synopsis

The amount of hydrogen evolved during the oxidation of formaldehyde at Ib electrodes was determined as a function of the potential. The current efficiency (amount of H, per two anodic electrons) can exceed 100% suggesting a reaction sequence which involves the (non-electrochemical) dissociation of a formaldehyde molecule into H, and HCOO-. Further suppport for such a potential dependent and heterogeneously catalyzed chemical reaction is given by isotope experiments. Smaller amounts of hydrogen are also evolved during the oxidation of acetaldehyde and propionaldehyde, showing that the release of a hydrogen molecule can also be coupled to electrochemical oxidation.

๐Ÿ“œ SIMILAR VOLUMES

Evolution of molecular hydrogen during t
Evolution of molecular hydrogen during the atmospheric oxidation of coal
โœ Samuel L. Grossman; Shoshana Davidi; Haim Cohen ๐Ÿ“‚ Article ๐Ÿ“… 1991 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 227 KB

Coals from different provenances were oxidized at low temperatures (55-95ยฐC) under controlled conditions in small glass reactors. A detailed analysis of the gases produced revealed small but appreciable amounts of molecular hydrogen in addition to the more commonly reported products of coal oxidatio

The equivalent pressure of molecular hyd
The equivalent pressure of molecular hydrogen in cavities within metals in terms of the overpotential developed during the evolution of hydrogen
โœ J.O'M. Bockris; P.K. Subramanyan ๐Ÿ“‚ Article ๐Ÿ“… 1971 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 658 KB

In traditional electrochemistry, the pressure in cavities in equilibrium with surfaces on which HI is being evolved is (f=&t = exp (--ZW!RT), (1) where q is the hydrogen overpotential, a negative quantity. examined in terms of electrochemical kinetics. The problem of the internalfugaciry-f is It

On the performance of porous platinized
On the performance of porous platinized tungsten trioxide electrodes in the electrochemical oxidation of hydrogen
โœ J.A.R. van Veen; C. Visser ๐Ÿ“‚ Article ๐Ÿ“… 1981 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 673 KB

Ahtract-The performance of porous Pt-containing H, electrodes is found to be itiuenced by masstransport effects. Pt-WO, electrodes are about twice as active as electrodes containing commercial R-C fuel cell catalysts in hydrogen oxidation. From our catalytic hydrogenation studies it follows tba1 thi