
Developing RWGS technology with a proprietary catalyst for producing renewable carbon monoxide from CO2.

Sisyphus
Leoben, AustriaNew on Amplifa
About Sisyphus
Sisyphus is a technology company from Leoben (Austria) that develops a thermochemical reverse water-gas-shift (RWGS) technology. Carbon dioxide is converted with hydrogen into carbon monoxide; the result is renewable CO with purity above 99% or a synthesis gas mixture with hydrogen. The process is based on a proprietary, selective catalyst with low-temperature operation and dynamic electric heating that can use inexpensive off-peak green power; over 95% of the CO2 feedstock is utilized. Target markets are the chemical industry (chemicals, polymers, specialty materials) as well as the production of renewable e-fuels for aviation, shipping and heavy transport; hybrid BtL/PtL concepts with biomass gasification are also being pursued. The founding team combines expertise in catalysis, materials science and process engineering and is affiliated with Montanuniversität Leoben, whose laboratory resources are used. Sisyphus sees itself as a provider of an integrable technology for a circular carbon economy.
- Site
- Leoben
- Processes
- Reverse Water-Gas-Shift (RWGS) – thermochemical conversion of CO2 with H2 into renewable CO, RWGS technology for CO2-to-CO conversion with a proprietary catalyst, Production of renewable carbon monoxide / synthesis gas, Hybrid BtL/PtL concepts (integration with biomass gasification)
- Materials
- Carbon monoxide (renewable CO), CO2 (feedstock), Hydrogen (H2), Syngas, Reverse Water-Gas-Shift (RWGS), Carbon dioxide (feedstock), Hydrogen, Renewable carbon monoxide
- Industries
- Chemical industry, Polymers and specialty materials, Aviation, Shipping, Heavy transport, E-fuels
- 01
CO2 as feedstock
- 02
RWGS conversion with H2 on the proprietary catalyst
- 03
Dynamic electric heating with green power
- 04
Renewable CO or syngas
- 05
Utilization in chemicals, polymers and e-fuels
Materials and Processes
Reverse Water-Gas-Shift (RWGS)
Thermochemical conversion of CO2 with hydrogen into renewable carbon monoxide based on a proprietary catalyst.
Carbon dioxide (feedstock)
Serves as the carbon source; over 95% of the feedstock is utilized in the process.
Hydrogen
Reaction partner in the RWGS process and a component of the produced synthesis gas.
Renewable carbon monoxide
Product with purity above 99% for existing industrial applications of the chemical industry.
Synthesis gas
CO-H2 mixture as a starting material for e-fuels for aviation, shipping and heavy transport.
Sites

Leoben
ATSite with access to the laboratories of Montanuniversität Leoben
- Materials
- CO2, H2, CO, synthesis gas
Technology and Applications


Inside the production



Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Reverse Water-Gas-Shift (RWGS) – thermochemical conversion of CO2 with H2 into renewable COEngineering | – | – | – | – | CO2, H2, CO, Syngas |
Additional services
History
- 2023
CTO Lorenz Lindenthal was named one of TU Vienna's "30 under 30".