Carbon Capture Sorbent Technology — CALF-20 Advantages & Performance

Advanced Sorbents for Industrial Carbon Capture

Existent is the authorized source for CALF-20 sorbents, a metal-organic framework (MOF) material that offer step-change performance for CO₂ adsorption in industrial gas streams. 

CALF-20 sorbents provide a combination of performance features that matter for real-world carbon capture:

• High CO₂ selectivity: Preferentially adsorbs CO₂ even in humid flue gas

• Moisture tolerance: Maintains performance with water-containing streams

• Energy-efficient regeneration: Lower energy required to release captured CO₂

• Stability & durability: Proven robustness across many adsorption/desorption cycles

• Scalability: Manufacturable at multi-tonne scale for industrial deployment

Unlike traditional sorbents (zeolites, activated carbon, amines), our materials sustain high performance without complex gas-preconditioning that adds cost and downtime.

How it works:

Our sorbents operate via physisorption, meaning they attract and hold CO₂ molecules through physical interactions that are:

• Strong enough to capture efficiently,

• Weak enough to release with lower heat or pressure,

• Resilient under real-gas conditions like moisture and impurities.

This yields lower regeneration energy and lower total cost of capture — critical for heavy industries evaluating carbon management options.

Deeper technical insights:​

High Selectivity and Capacity: CALF-20 demonstrates excellent CO₂ adsorption capacity over a wide temperature range and high selectivity for CO₂ over water, which is crucial for post-combustion capture where flue gases are humid.​

Moisture Tolerance: Unlike traditional adsorbents such as zeolites and activated carbon, CALF-20 maintains its performance in the presence of water vapor. Beyond co-adsorption of CO2 in water, CALF-20 has a unique ability to suppress water sorption making regeneration easier and giving higher purity CO2 upon release.​

Energy-Efficient Regeneration: CALF-20 operates via physisorption, which means CO₂ is captured through weak interactions that require less energy to reverse. This results in lower energy consumption during the regeneration (desorption) process, reducing operational costs. ​

Stability and Durability: The material exhibits remarkable stability over a wide temperature range (-20 to 99 degrees Celcius) and maintains its structural integrity and adsorption efficiency over multiple cycles, ensuring long-term, reliable performance.​

Rapid Cycling and Small Footprint: The synergy between CALF-20’s properties and standard gas separation process designs enables streamlined deployment, allowing carbon capture systems to be more compact and cost-effective.​

Scalability and Sustainability: CALF-20 can be responsibly produced at multi-ton scale, aligning with sustainability goals.​

CALF-20 is a zinc-based metal-organic framework (MOF) created by researchers at the University of Calgary and developed for efficient carbon dioxide (CO₂) capture in
industrial processes. Learn more about CALF-20 developments and emerging MOF technologies.​

What others are saying:​

– Advanced Science News: CALF-20 A Carbon Capture Success Story​
– Thunder Said Energy: Metal Organic Frameworks: sorting hat?​
– Science Daily: Understanding Carbon Traps​

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