The role of single-phase free convection in mass transfer at gas evolving electrodes—I. Theoretical

✍ Scribed by H. Vogt

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 578 KB
• Volume: 38
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(93)80079-f

✦ Synopsis

Ah&act-The catalogue of known mass transfer mechanisms acting at gas evolving electrodes has to be extended by a mechanism which has obviously been ignored so far. Under certain conditions, free convection owing to density gradients within the liquid phase (single-phase convection) exerts the controlling effect on mass transfer. Generally, the mechanism competes with other mass transfer mechanisms which have been investigated for a long time and are rather well understood. Available mass transfer equations for these mechanisms are extended to fit the special conditions of gas evolving electrodes. A general mass transfer equation for single-phase free convection is derived.