Analysis and minimization of cell voltage in electro-organic syntheses using the solid polymer electrolyte technology

Autor:	H. Pütter, D. Hoormann, Jakob Jörissen, C Kubon, Lars U. Kröner
Rok vydání:	2001
Předmět:	Chemistry business.industry General Chemical Engineering Inorganic chemistry Electrolyte Conductivity Analytical Chemistry Anode Membrane Standard electrode potential Electrode Electrochemistry Equivalent circuit Optoelectronics business Voltage
Zdroj:	Journal of Electroanalytical Chemistry. 507:215-225
ISSN:	1572-6657
DOI:	10.1016/s0022-0728(01)00476-4
Popis:	Using an ion exchange membrane as a solid polymer electrolyte (SPE technology) electro-organic syntheses are possible in non-conductive fluids. In order to expand the application limits in non-aqueous media the methoxylation of p-methoxytoluene was investigated as an example of commercial interest. By means of specially adapted equipment, the electrode potentials and the membrane voltage drop have been determined. Via analysis of current interruption measurements, additional information about the electrode behaviour was available. On this basis, a combination of methods has been developed which enables a stationary operation with a minimized cell voltage. The remarkable result of the experiments is that the membrane achieves sufficient conductivity and that too high cell voltages, observed at the beginning of the investigations, are caused mainly by polymer layers on the anode. Ways to lessen their influence have been realized. The results demonstrate that the SPE technology could be extended to new applications in non-aqueous media.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f8b22e9a5ec3079fa26c49bbdaffbc88 https://doi.org/10.1016/s0022-0728(01)00476-4 Zobrazit plný text záznamu Full Text from ScienceDirect