Description
Key Properties & Advantages
CALF-20 (KAR-F33)’s superior CO₂ capture performance stems from its zinc-based structure and optimized design:
Exceptional CO₂ Adsorption Capacity & Selectivity: Features a pore geometry (typically 0.5–0.8 nm) and surface chemistry tailored to strongly interact with CO₂ molecules, enabling high adsorption capacity (even at low CO₂ concentrations) and selective separation from flue gas components (e.g., N₂, O₂, H₂O).
Humid Condition Stability: Maintains structural integrity and adsorption efficiency in moist environments—critical for post-combustion systems, where flue gases often contain high water vapor content.
Thermal Stability at Moderate Temperatures: Withstands temperatures up to 200°C, ensuring durability in industrial capture processes without compromising adsorption performance.
Low-Energy Regeneration: Requires relatively low temperatures for CO₂ desorption, reducing energy consumption compared to traditional adsorbents (e.g., amines, zeolites)—a key advantage for large-scale, cost-effective carbon capture.
Zinc-Based Safety: Zinc’s low toxicity and environmental compatibility make it suitable for applications requiring minimal ecological impact, distinguishing it from heavy metal-based MOFs.
Core Applications
Post-Combustion Carbon Capture
CALF-20 (KAR-F33) is ideally suited for capturing CO₂ from industrial flue gases:
Flue Gas Treatment: Efficiently removes CO₂ from emissions of power plants, cement factories, and steel mills, even in the presence of water vapor and other impurities.
Industrial Stream Purification: Separates CO₂ from process streams (e.g., biogas, natural gas) to enhance fuel quality or meet emission regulations.
Carbon Capture from Dilute Sources
Ambient Air Capture: Demonstrates potential for direct CO₂ capture from atmospheric air, supporting efforts to reduce legacy carbon emissions.
Low-Concentration CO₂ Streams: Effective at capturing CO₂ from dilute industrial exhausts, where traditional adsorbents often underperform.
Technical Specifications
Parameter Details
CAS Number 2589928-73-2
Product Name CALF-20
Model KAR-F33
Metal Node Zinc (Zn²⁺)
Appearance White to off-white crystalline powder
BET Surface Area Typically 800–1200 m²/g
Pore Size Optimized for CO₂ (≈0.5–0.8 nm)
CO₂ Adsorption High capacity (varies by conditions; typically ≥3 mmol/g at 25°C, 1 bar)
Stability Resistant to humidity and moderate temperatures (up to 200°C)
Regeneration Low-energy requirement (desorption at ≤120°C)
Quality Assurance
Each batch of CALF-20 (KAR-F33) undergoes rigorous testing to ensure reliability:
X-ray Diffraction (XRD): Confirms structural integrity and phase purity.
CO₂ Adsorption Testing: Validates capacity and selectivity under simulated flue gas conditions (including humidity).
Thermogravimetric Analysis (TGA): Verifies stability under humid and elevated temperature conditions.
Particle Size Analysis: Ensures uniform powder consistency for industrial packing.
A certificate of analysis (CoA) is provided with each order, documenting batch-specific performance metrics.
Packaging & Storage
Packaging Options: Available in 1g, 5g, 10g, 50g, and bulk quantities, packaged in airtight, moisture-resistant containers to preserve adsorption capacity.
Storage Conditions: Store at room temperature in a dry environment. Avoid prolonged exposure to strong acids or reducing agents. Shelf life is ≥12 months under proper storage.
Why Choose CALF-20 (KAR-F33)?
CALF-20 (KAR-F33) combines high CO₂ adsorption efficiency, humid stability, and low-energy regeneration—making it a standout choice for:
Industrial Carbon Capture: Cost-effective integration into post-combustion systems.
Research on Carbon Reduction: Reliable performance for developing next-generation capture technologies.
Sustainable Emission Management: Low environmental impact via zinc-based chemistry.
With its consistent quality and tailored design, CALF-20 delivers actionable solutions for addressing global carbon emission challenges.
Contact our technical team for bulk pricing, custom testing, or application-specific data.
For research and industrial use only.

