In the field of advanced materials science, high-purity boehmite is playing an increasingly crucial role as an important aluminum source and precursor. Compared with ordinary boehmite, its superior purity, controllable pore structure, and excellent colloidal properties make it a sought-after material in many high-tech industries. So, in which fields does high-purity boehmite play an important role?
Main Application Areas
1. Petrochemical and Environmental Catalysis
High-purity boehmite itself does not possess strong catalytic activity, but its high-purity γ-alumina, converted after high-temperature calcination, has a huge specific surface area and abundant pores, making it an ideal framework or platform for supporting active metal components such as platinum, palladium, and nickel.
Specific Applications: Hydrorefining catalysts, reforming catalysts, automotive exhaust purification catalysts, volatile organic compound (VOC) catalysts, etc.
Why is "high purity" required? Impurities (such as sodium) neutralize the acidic centers of the catalyst, reducing its activity; while impurities such as iron participate in side reactions, leading to catalyst poisoning and deactivation.
2. New Energy Batteries
In the field of lithium-ion batteries, high-purity boehmite is a core raw material for high-end ceramic separator coatings. It is made into a slurry, uniformly coated onto the surface of a polyolefin separator, and dried to form a porous, heat-resistant ceramic coating.
Core Functions:
Improved Heat Resistance: The alumina coating significantly improves the thermal stability of the separator, preventing it from shrinking and causing internal short circuits when the battery overheats, greatly enhancing battery safety.
Electrolyte Wetting: Its porous structure has good affinity for electrolytes, improving the battery's rate performance.
Enhanced Mechanical Strength: Improves the puncture resistance of the separator.
Why "High Purity"? Extremely low metal impurity content avoids side reactions inside the battery, ensuring cycle life and safety.
3. High-Performance Ceramics and New Materials
High-purity boehmite is a key precursor for preparing various high-performance alumina ceramics and transparent ceramics.
Due to its high purity, high activity, and good sintering properties, it can be sintered into dense, homogeneous ceramic bodies at relatively low temperatures.
Specific applications: Transparent alumina ceramics, structural ceramics, phosphor carriers, etc.
Why is "high purity" necessary? Impurities are the main cause of yellowing, defects, reduced mechanical strength, and decreased light transmittance in ceramic materials.
4. Adsorption and Separation
Its large specific surface area and tunable surface chemistry make it a highly efficient adsorbent. Physical and chemical adsorption work together to selectively adsorb specific molecules.
Specific applications: Desiccants, chromatographic packing materials, water purification adsorption, etc.
5. Refractory Materials and Binders
In the field of refractory materials, high-purity boehmite is often used as a high-performance binder and additive. It utilizes its excellent cementing properties and the ability to generate active alumina at high temperatures.
Core Functions: Improves the medium- and high-temperature strength of refractory castables and plastics, enhancing their volume stability and corrosion resistance.
In an increasingly competitive market, material performance directly determines the competitiveness of the end product. Zibo Xiangrun's high-purity boehmite, through advanced synthesis and purification technology, ensures the following characteristics:
Ultra-high purity: Na₂O content can be stably controlled at < 0.05%, or even lower.
Controllable pore structure: Offers various specific surface area and pore size distribution models to meet personalized needs.
Excellent colloidal properties: Easy to disperse, forming a stable colloid, facilitating subsequent processing.
Batch stability: Strict production quality control ensures consistent performance in every batch.
If you have any questions or needs regarding high-purity boehmite, please contact Zibo Xiangrun Environmental Engineering Co., Ltd.—a professional alumina manufacturer.
