Process 4: two steps with electricity to create loang-chain alcohols


Long-chain alcohols are used for producing plastics, cosmetics and laundry detergents as well as fuel additives. Because of their advantageous properties, higher alcohols are valuable raw materials. A coupled process involving high-temperature electrolysis (solid oxide electrolysis cell – SOEC) and Fischer-Tropsch synthesis was developed for producing long-chain alcohols (C4-C20) from CO2 and water. It is the first time that such a synthesis has been technically realized using a two-step electrolysis-based process.
CO2 is directly converted within the SOEC. New, cost-effective iron-based catalysts and a novel reactor were developed for alcohol synthesis, shifting the product spectrum towards long-chain alcohols.

The “Two steps with SOEC and Fischer-Tropsch synthesis” process makes the following innovative solutions available for industrial applications:

  • Highly durable SOEC modules optimized for syngas production via co-electrolysis
  • Iron-based catalysts, support structures and reactors for Fischer-Tropsch synthesis to long-chain alcohols
  • Development of sustainable synthesis processes
  • Scale-up to demonstration scale