Electrolytic Synthesis of Peroxyacetic Acid Using In Situ Generated Hydrogen Peroxide on Gas Diffusion Electrodes

2004 ◽  
Vol 151 (9) ◽  
pp. D93 ◽  
Author(s):  
Madhu Sudan Saha ◽  
Yoshinori Nishiki ◽  
Tsuneto Furuta ◽  
Takeo Ohsaka
Keyword(s):  
Hydrogen Peroxide ◽  
Gas Diffusion ◽  
Peroxyacetic Acid ◽  
Gas Diffusion Electrodes

Synthesis of peroxyacetic acid using in situ electrogenerated hydrogen peroxide on gas diffusion electrode

2003 ◽  
Vol 5 (6) ◽  
pp. 445-448 ◽  
Author(s):  
Madhu Sudan Saha ◽  
Ao Denggerile ◽  
Yoshinori Nishiki ◽  
Tsuneto Furuta ◽  
Takeo Ohsaka
Keyword(s):  
Hydrogen Peroxide ◽  
Gas Diffusion ◽  
Gas Diffusion Electrode ◽  
Peroxyacetic Acid

scholarly journals Hydrogen Peroxide Production in an Electrochemical Flow-by Reactor using Gas Diffusion Electrodes Modified with Organic Redox Catalysts

2020 ◽  
Vol 8 (7) ◽  
pp. 152-170
Author(s):  
Juliane Forti ◽  
Mariana Matulovic ◽  
Mario Mollo Neto ◽  
Felipe Santos ◽  
Marcos Lanza ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Energy Consumption ◽  
Maximum Yield ◽  
Gas Diffusion ◽  
Gas Diffusion Electrodes ◽  
Redox Catalysts ◽  
Low Energy Consumption ◽  
Solubility Of Oxygen ◽  
Low Solubility

This paper presents a proposal to use an electrochemical flow-by reactor for hydrogen peroxide electrogeneration using cathodes formed from the incorporation of organic redox catalysts (2-ethylanthraquinone, 2-tert-butylanthraquinone, alizarin, and azobenzene) in the structure of gas diffusion electrodes. These electrodes help circumvent the low solubility of oxygen in aqueous solutions. Organic redox catalysts, which typically contain quinone or azo groups in their structure, were added to the electrode mass in a 10% proportion. The electrodes were used to study the electrogeneration of hydrogen peroxide in situ, in an acid medium (0.1 mol L-1 H2SO4 and 0.1 mol L-1 K2SO4, pH 1), inside an electrochemical flow-by reactor. Comparative analysis among the different catalysts indicated that the best electrode for hydrogen peroxide electrogeneration was the gas diffusion electrode modified with 10% of 2-ethylanthraquinone. With an underflow rate of 200 L h-1, hydrogen peroxide was formed with a maximum yield of 998.12 mg L-1 after 2 h at -2.0 V vs Pt//Ag/AgCl, for which the energy consumption was 11.21 kWh kg-1. The use of the electrochemical flow-by reactor was much more efficient, in that it yielded higher concentrations of hydrogen peroxide with extremely low energy consumption, compared to that obtained when using an electrochemical cell. In addition, for ensuring appropriate usage of the electrodes, optimizing their potential for the maximum generation of hydrogen peroxide, and obtaining the highest efficiency for the reduction of oxygen, a fuzzy algorithm was developed to help support the user’s decision.

Electrogeneration of hydrogen peroxide in gas diffusion electrodes modified with tert-butyl-anthraquinone on carbon black support

Carbon ◽  
2013 ◽  
Vol 61 ◽  
pp. 236-244 ◽  
Author(s):  
Ricardo B. Valim ◽  
Rafael M. Reis ◽  
Pollyana S. Castro ◽  
Alex S. Lima ◽  
Robson S. Rocha ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Carbon Black ◽  
Gas Diffusion ◽  
Gas Diffusion Electrodes ◽  
Tert Butyl
Sign in / Sign up

Export Citation Format

Share Document