Process 1: Electricity to create H2O2

 

Many users want to avoid costly storage and security logistics; they would prefer to produce H2O2 locally on demand and use it immediately. A process has been developed for electrochemical production of H2O2 in an aqueous reaction system (both cathodic and anodic), including coupling it to subsequent chemical processes. H2O2 is produced continuously, which allows for immediate forward integration in the form of prepared aqueous solutions. The process can take place locally and on a small scale, and under ideal conditions it uses 100 percent renewable energy. It includes upstream processing (providing reactants, electricity, and auxiliary agents), the electrochemical cell with a catalyst and a gas diffusion electrode as a central reactor unit for H2O2 synthesis, downstream processing (H2O2 with the required product purity and concentration) as well as a connection to the subsequent chemical processes (selective oxidation, demonstrated here using the example of fuel desulfurization).

The “Electricity to create H2O2” process has created the following innovative solutions for industrial applications:

  • Catalyst systems for cathodic H2O2 synthesis
  • Diamond electrodes for anodic H2O2 synthesis
  • Electrode, cell, and stack designs
  • Innovative ion-conducting membranes with low fluorine content and high ionic conductivity
  • Real-time-capable process analytics
  • Continuous separation and concentration processes
  • Application examples for chemical synthesis, material processing, and hygiene/purification