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Ytterbium(II) as a mediator in organic electrosynthesis - possibilities and limitations
No full textThe kinetics of the Yb(III)/Yb(II) couple in aprotic solvents are rapid at several electrode materials and the reducing power of the Yb(II) may be modified substantially by choice of solvent and electrolyte. Electrogenerated Yb(II), when present in stoichiometric amounts, allows the stereoselective reduction of 1,3-dibenzoylpropane to the cis isomer of a cyclic diol. Ytterbium(III) is not, however, a straightforward 'mediator' because, after the reduction of 1,3-dibenzoylpropane by the Yb(H), the Yb(III) is bound to the organic product. Both use of an aluminium anode or addition of trimethylsilylbromide lead to release of the Yb(III); then the ytterbium acts as a catalyst. Such procedures, however, lead to loss in the stereoselectivity of the reduction and the reactions are slow so that the regeneration of the Yb(III) does not enhance the current density. The current density is always low, limited by mass transport of the catalyst
Industrial electrochemistry. 2nd edition
No full textThis book provides a background in electrochemistry and electrochemical engineering and reviews modern applications of electrochemical technology
Electrochemistry: Now and the Future
No full textFew scientists or engineers are aware of the importance of electrochemistry to either their own fields or modern technology. In fact, electrochemistry provides tools that probe problems and enhance understanding of subjects as diverse as medical diagnostics, biology, chemistry, the environment, materials and engineering. It is also the enabling technology behind a range of industries, spanning applications as diverse as chemicals manufacture, effluent treatment and medical monitoring (see Table 1). Although based on the same fundamental principles, the technology associated with these applications can be totally different. For example, the currents passing may vary between 10–9 and 106 amps and involve electrode areas between 10–12 and 104m2
A first course in ion permeable membranes
No full textThe book serves as an introduction to the manufacture, physical chemistry and applications of the ion permeable membranes that are used in electrochemical technolog
A Comparison of the Corrosion of Carbon and 13 % Chromium Steels in Oilfield Brines Containing Acetate
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