Description

Key Properties & Advantages
UIO-66-COOH??s performance stems from its structural design and functional modification:

Exceptional Stability: Inherits UIO-66??s renowned thermal and chemical resilience??withstands temperatures up to 350?C400??C (inert atmosphere) and resists degradation in acids, bases, and organic solvents, ensuring durability in harsh operational environments.
Highly Ordered Porous Structure: Features a well-defined 3D porous network with a large BET surface area (typically 700?C1000 m2/g) and uniform pore size (~1.0 nm), enabling efficient molecular adsorption, diffusion, and mass transfer.
Carboxyl-Modified Surface: The integrated -COOH groups enhance:
Hydrophilicity, improving interactions with polar molecules (e.g., water, alcohols, CO?).
Coordination with metal ions (facilitating catalytic functionalization with active metals like Pd, Cu, or Fe).
Hydrogen bonding and electrostatic interactions, boosting selectivity in adsorption/separation processes.
Tunable Surface Chemistry: The density of carboxyl groups can be tailored during synthesis to optimize compatibility with specific target molecules, offering flexibility for custom applications.
Commercial-Grade Consistency: KAR-F30-COOH ensures minimal batch variation, a critical factor for scaling from laboratory research to industrial production.
Applications
Gas Storage & Separation
Selective Gas Adsorption: The carboxyl groups enhance affinity for polar gases (e.g., CO?, H?S), making it ideal for carbon capture from flue gases, biogas purification (removing CO? from CH?), and sour gas treatment.
Small Molecule Storage: Its porous structure enables efficient storage of H? and CH?, supporting the development of clean energy technologies (e.g., hydrogen fuel storage, natural gas compression alternatives).
Heterogeneous Catalysis
Catalyst Support: Acts as a stable platform for anchoring metal nanoparticles or metal ions via carboxyl coordination, enhancing catalytic activity and recyclability in reactions such as:
CO? hydrogenation to formic acid or methanol.
Oxidation of organic pollutants (e.g., phenols, dyes) in wastewater.
Acid-catalyzed reactions (leveraging the weakly acidic nature of -COOH groups for esterification or hydrolysis).
Environmental Pollutant Adsorption
Water Purification: Effectively adsorbs heavy metal ions (e.g., Pb2?, Cd2?, Hg2?) via chelation with carboxyl groups, and removes organic pollutants (e.g., pharmaceuticals, pesticides) through hydrophobic interactions with the MOF??s organic framework.
Air Purification: Captures volatile organic compounds (VOCs) and polar air pollutants, supporting indoor air quality control and industrial emission treatment.
Controlled Drug Release
Biocompatible Delivery Systems: The porous structure allows encapsulation of drug molecules, while carboxyl groups enable pH-responsive release (triggered by acidic environments, such as tumor tissues or endosomes). Its zirconium-based composition ensures low toxicity, making it suitable for biomedical applications.
Technical Specifications
Parameter Details
CAS Number 1334722-04-1
Chemical Composition Zirconium clusters linked by carboxyl-modified terephthalate ligands (typical formula: Zr?O?(OH)?(bdc-COOH)?, where bdc-COOH = 2-carboxyterephthalate)
Appearance Off-white to pale yellow fine powder
Purity ??95% (commercial grade)
BET Surface Area 700?C1000 m2/g
Pore Size ~1.0 nm (uniform distribution)
Thermal Stability Up to 350?C400??C (inert atmosphere)
Quality Assurance
Each batch of KAR-F30-COOH undergoes rigorous testing to ensure reliability:

X-ray diffraction (XRD) to confirm structural integrity and phase purity.
Nitrogen adsorption-desorption analysis to verify surface area and pore size distribution.
Stability testing in acidic, basic, and organic solvent environments.
Metal ion leaching assessment (for catalytic and biomedical applications).