Improved Operating Parameters for Hydrogen Peroxide‐Generating Gas Diffusion Electrodes
| Autor: | Thorben Muddemann, Ulrich Kunz, Michael Sievers, Dennis Haupt |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Electrolysis
Materials science Gas diffusion electrode 010405 organic chemistry Electrolytic cell General Chemical Engineering article Separator (oil production) 02 engineering and technology General Chemistry Carbon black Electrolyte Electrolysis -- Gas diffusion electrode -- Hydrogen peroxide -- H2O2 synthesis 01 natural sciences Industrial and Manufacturing Engineering 0104 chemical sciences law.invention 020401 chemical engineering Chemical engineering law Gaseous diffusion 0204 chemical engineering ddc:600 Current density |
| Zdroj: | Chemie Ingenieur Technik. 92:505-512 |
| ISSN: | 1522-2640 0009-286X |
| DOI: | 10.1002/cite.201900137 |
| Popis: | The influence of process parameters on the H2O2 yield of gas diffusion electrodes (GDE) are investigated. The investigated GDEs consist of Vulcan XC72 carbon black and PTFE on gold‐plated nickel wire cloth. An electrolysis cell is used to evaluate the influence of various process parameters, such as temperature, pH value, oxygen pressure and stoichiometric factor, electrolyte flow regime, current density and separator material at steady‐state conditions. It is found that the investigated GDE enables current efficiencies greater than 90 % at up to 2 kA m−2, whereby lower electrolyte temperatures and higher pH values contribute to higher H2O2 yields above 90 % current efficiency. |
| Databáze: | OpenAIRE |
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