摘要:

This short communication presents a simple asymptotic analysis of a coupled heat and mass transfer problem which models certain reacting fluid-solid systems. The calculation, which is an extension of earlier work on moving boundary problems, provides an analytical solution to the governing equations. This solution may be useful since it can provide quick analytical estimates of nonisothermal behavior in such systems.

ISSN:0098-6445    

DOI:10.1080/00986449308936171

出版商:Taylor & Francis Group    

年代:1993

数据来源: Taylor

摘要:

Anodic oxidation and paired electrochemical oxidation of anthracene to anthraquinone in an undivided cell were carried out. The factors affected on the paired electrochemical oxidation of anthracene to anthraquinone were explored. The results revealed that oxygen flow rate, concentration of sulfuric acid and agitation rate were the major factors, and concentration of mediator, temperature, and current density were the minor factors. The reaction mechanism of paired electro-oxidation of anthracene was proposed. Oxygen was cathodically reduced to generate H2O2which chemically reacted with V4+to produce both OH free radical and V5+. Which then oxidized anthracene to anthraquinone. The results also showed that the total current efficiency of anthraquinone was higher than 100%.

ISSN:0098-6445    

DOI:10.1080/00986449308936172

出版商:Taylor & Francis Group    

年代:1993

数据来源: Taylor