Description
Key Properties & Advantages
ZIF-8 (KAR-F02)’s superior performance stems from its sodalite-like structure and zinc-imidazolate chemistry:
Sodalite-Like Framework: Features a well-defined porous network with uniform pores (~3.4 Å) and a large BET surface area (typically 1400–1900 m²/g), enabling efficient molecular sieving and high-capacity gas adsorption.
Exceptional Chemical Stability: Maintains structural integrity in organic solvents, aqueous solutions (pH 4–12), and moderate temperatures (up to 250°C under inert conditions), outperforming many MOFs in harsh operational environments.
Hydrophobic Nature: Repels water molecules, preserving adsorption efficiency in humid environments—critical for applications like flue gas carbon capture, where moisture is present.
Tunable Pore Size & Surface Chemistry: Supports post-synthetic modification to adjust pore dimensions and functional groups, enhancing selectivity for target molecules (e.g., CO₂ over N₂, H₂ over CH₄).
Uniform Particle Size: Solution-based synthesis ensures consistent particle morphology, facilitating reliable packing in industrial columns and uniform dispersion in composite materials (e.g., membranes, catalytic supports).
Core Applications
Gas Adsorption & Storage
ZIF-8 (KAR-F02)’s porosity and stability make it ideal for gas-related applications:
CO₂ Capture: Selectively adsorbs CO₂ from flue gases, biogas, and ambient air, with high capacity and reversible adsorption—supporting carbon reduction efforts.
Hydrogen (H₂) Storage: Efficiently captures and releases H₂ at low temperatures, enabling compact, safe storage for hydrogen fuel technologies.
Small Molecule Storage: Adsorbs other small gases (e.g., CH₄, N₂) with high selectivity, supporting fuel storage and industrial gas separation.
Molecular Sieving
Precision Separation: ~3.4 Å pores enable size-based separation of small molecules (e.g., CO₂ vs. N₂, H₂ vs. CH₄), critical for purifying industrial gas streams and fuel mixtures.
Solvent Purification: Removes impurities from organic solvents via selective adsorption, enhancing purity in pharmaceutical and fine chemical synthesis.
Heterogeneous Catalysis
Catalytic Support & Active Site: Zinc nodes act as Lewis acid sites, promoting reactions like esterification, cycloadditions, and CO₂ conversion. Its porous structure confines reactants, enhancing catalytic selectivity.
Stable Catalyst Platform: Withstands reaction conditions (e.g., high temperatures, organic solvents) without degradation, enabling repeated use in industrial catalytic cycles.
Technical Specifications
Parameter Details
CAS Number 59061-53-9
Chemical Composition Zinc 2-methylimidazolate (Zn(C₄H₄N₂)₂)
Appearance White to off-white crystalline powder
BET Surface Area 1400–1900 m²/g
Pore Size ~3.4 Å (uniform micropores)
Thermal Stability Up to 250°C (inert atmosphere)
pH Stability 4–12 (aqueous solutions)
Hydrophobicity Water-repellent, maintains activity in humid environments
Quality Assurance
Each batch of ZIF-8 (KAR-F02) undergoes rigorous testing:
X-ray Diffraction (XRD): Confirms crystallinity and sodalite-like structure.
Nitrogen Adsorption-Desorption: Verifies surface area and pore size distribution.
Scanning Electron Microscopy (SEM): Ensures uniform particle size and morphology.
Gas Adsorption Testing: Measures CO₂ and H₂ uptake to validate performance.
A certificate of analysis (CoA) is provided with each order, documenting batch-specific properties.
