Description
Key Properties & Advantages
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Exceptional Thermal & Chemical Stability: Maintains structural integrity at temperatures up to 380°C (under inert conditions) and resists degradation in acidic, basic, and organic solvent environments—ideal for harsh operational settings where many MOFs fail.
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Ordered Porous Structure: Features a well-defined 3D porous network with a large BET surface area (typically 750–1100 m²/g) and uniform pore size (~1.0 nm), enabling efficient molecular diffusion and high adsorption capacity.
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Hydroxyl-Enhanced Surface Reactivity: The -OH groups introduce:
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Strong hydrogen-bonding capabilities, improving selectivity for polar molecules (e.g., CO₂, water, alcohols).
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Lewis acid/base sites, enabling participation in acid-catalyzed or base-catalyzed reactions.
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Chelation with metal ions, facilitating functionalization for targeted catalysis or sensing.
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Tailored Selectivity: The density of hydroxyl groups can be controlled during synthesis, allowing customization of interactions with target molecules (e.g., adjusting affinity for specific gases or pollutants).
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Batch-to-Batch Consistency: KAR-F30-(OH)₂ ensures minimal variation in key properties (surface area, porosity, functional group density), a critical advantage for scaling from lab research to industrial applications.
Applications
Gas Storage & Separation
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Carbon capture from flue gases or industrial emissions (via selective CO₂ adsorption).
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Hydrogen purification and storage (supporting clean energy technologies).
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Mixed gas separation (e.g., CO₂/CH₄ in natural gas upgrading, H₂/CO₂ in syngas processing).
Liquid-Phase Adsorption
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Organic pollutants (e.g., phenols, dyes, pharmaceuticals) via hydrogen bonding and hydrophobic interactions.
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Heavy metal ions (e.g., Cr³⁺, Cu²⁺) through chelation with -OH groups, supporting wastewater purification.
Catalytic Applications
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Acid/Base Catalysis: Hydroxyl groups act as active sites for acid-catalyzed reactions (e.g., esterification, dehydration) and base-mediated processes (e.g., aldol condensation), leveraging their amphoteric nature.
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Catalyst Support: Serves as a stable platform for anchoring metal nanoparticles (e.g., Pt, Ru) or metal oxides, with -OH groups enhancing particle dispersion and catalytic activity in reactions like:
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CO₂ hydrogenation to value-added chemicals (e.g., methanol).
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Oxidation of organic compounds (e.g., alcohol oxidation to aldehydes).
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Technical Specifications
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Parameter
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Details
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CAS Number
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1356031-63-4
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Chemical Composition
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Zirconium clusters linked by dihydroxyl terephthalate ligands (typical formula: Zr₆O₄(OH)₄(bdc-(OH)₂)₆, where bdc-(OH)₂ = 2,5-dihydroxyterephthalate)
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Appearance
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Off-white to light beige fine powder
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Purity
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≥95% (commercial grade)
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BET Surface Area
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750–1100 m²/g
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Pore Size
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~1.0 nm (uniform distribution)
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Thermal Stability
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Up to 380°C (inert atmosphere)
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Quality Assurance
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X-ray diffraction (XRD) confirms structural integrity and phase purity.
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Nitrogen adsorption-desorption isotherms verify surface area and pore size distribution.
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Thermal gravimetric analysis (TGA) validates thermal stability.
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Fourier-transform infrared (FTIR) spectroscopy confirms hydroxyl group presence and density.
Handling & Storage
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Handling: Use in a well-ventilated area; wear gloves and safety glasses to prevent inhalation of fine powder.
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Storage: Store in an airtight, moisture-resistant container at room temperature. Protect from strong oxidizers. Shelf life is ≥12 months under proper storage conditions.
Packaging Options
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Available in 1g, 5g, 10g, 50g, and bulk quantities. Packaged in vacuum-sealed, moisture-barrier containers to preserve porosity and hydroxyl group activity during shipping and storage.

