Molecular sieve membrane systems for industrial gas separation, carbon capture and emission control
UniSieve AG
Zurich · SwitzerlandNew on Amplifa
About UniSieve
UniSieve AG is a Swiss deep-tech company based in Zurich that develops high-precision membrane solutions for industrial gas separation and carbon capture. At the core of the technology is a membrane cartridge with porous, crystalline sieves based on metal-organic frameworks (MOFs), whose pore size is tailored to the respective separation task – down to molecules that differ by only fractions of an ångström. The company produces its membranes in its own manufacturing facility and delivers complete, containerized turnkey systems including integration, commissioning and service at the customer's site. Three core applications are hydrocarbon separation (off-gas and flare gas recovery), point-source carbon capture, and specialty gases and emission control, such as refrigerant recovery, PFAS emission control and process gas recovery in semiconductor fabs. The technology was developed at ETH Zurich and validated on demanding process gas streams with more than five demonstration units.
- Site
- Zurich
- Processes
- Membrane gas separation (molecular sieving), CO2 capture / point-source CO2 capture, Hydrocarbon separation (off-gas recovery, flare gas recovery, hydrocarbon capture), Specialty gases & emission control (refrigerant recovery, PFAS emission control, semiconductor, Pilot validation on flue gas / system integration & on-site commissioning (containerized, Engineering of complete gas separation systems, Pilot demonstrations on customer gas streams, Containerized turnkey delivery
- Materials
- Metal-organic frameworks (MOFs)
- Founded
- 2018
- Industries
- Hydrocarbon processing (petrochemicals), Carbon capture / decarbonisation, Refrigerant recovery, PFAS emission control, Semiconductor manufacturing, Semiconductor fabs (process gas recovery)
- 01
Identify separation opportunity in the process
- 02
In-house membrane production
- 03
Pilot validation on customer gas streams
- 04
Engineering of the complete system
- 05
Containerized turnkey delivery
- 06
On-site integration and commissioning
- 07
Service and licensing
Materials & Processes
Metal-organic frameworks (MOFs)
Crystalline sieve material used as a molecular sieve in the membrane cartridges, specifically tailored to the respective separation task.
Locations
Zurich
CHHeadquarters, engineering, membrane production
- Materials
- MOFs
- In-house membrane production
- Demonstration units (containerized)
Systems & Applications
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Membrane gas separation (molecular sieving)Engineering | – | – | – | – | Metal-organic frameworks (MOFs) |
| CO2 capture / point-source CO2 captureEngineering | – | – | – | – | Metal-organic frameworks (MOFs) |
| Hydrocarbon separation (off-gas recovery, flare gas recovery, hydrocarbon capture)Engineering | – | – | – | – | Metal-organic frameworks (MOFs) |
| Specialty gases & emission control (refrigerant recovery, PFAS emission control, semiconductorEngineering | – | – | – | – | Metal-organic frameworks (MOFs) |
| Pilot validation on flue gas / system integration & on-site commissioning (containerizedEngineering | – | – | – | – | – |
1 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Demonstration units (containerized, 5+) | UniSieve | 5+ | – | – | Customer site (directly installed on plant) |
Additional services
History
- 2018
Founded as UniSieve AG, developed at ETH Zurich
- 2025
MOF material class (basis of the technology) awarded the Nobel Prize in Chemistry; website mentions more than 5 demonstration units