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Pseudo Boehmite

Yishengjia: Your Professional Pseudo Boehmite Manufacturer

 

Zibo Yishengjia Aluminum Co., Ltd. is mainly engaged in the production of alumina series products. Our company has a strong technical force, advanced technology, sophisticated equipment, and complete testing equipment. We specialize in the production of special aluminum hydroxide, high-purity alumina, activated alumina, etc. These products are widely used in insulation materials, polishing materials, colored glazes, luminescent materials, transparent ceramics, building materials, refractory materials, and other industries.

 

 
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Aluminum Hydroxide For Gastric Medicine

 

Introduction to Pseudo Boehmite

Pseudoboehmite is an aluminium compound with the chemical composition AlO(OH). It consists of finely crystalline boehmite. However, the water content is higher than in boehmite. Pseudoboehmite is essentially finely crystalline boehmite which consists of the same or similar octahedral layers in the xz plane but lacks three-dimensional order because of a restricted number of unit cells in y direction. It consists of a significant number of crystallites which contain a single unit cell along y or single octahedral layers. It contains more water which is commonly intercalated between octahedral layers, normally randomly arranged, but sometimes regularly.

 

Properties of Pseudo Boehmite

 

Hydrated alumina

 

01

High Surface Area

Pseudo boehmite has a high surface area, which provides increased active sites for adsorption and catalytic reactions. The high surface area allows for efficient interaction with molecules, making it an excellent material for adsorbents and catalyst supports.

Preparation of ultrafine aluminum hydroxide

 

02

Porosity

Pseudo boehmite exhibits a porous structure, with a network of interconnected pores. This porosity enables the material to have a large internal surface area, facilitating the adsorption and transport of molecules. The porosity is often adjustable, allowing for control over pore size distribution and pore volume.

A silane coupling agent

 

03

Amorphous Structure

Pseudo boehmite is amorphous, meaning it lacks long-range order in its atomic arrangement. This amorphous structure provides flexibility in shaping and processing the material, making it suitable for various applications. It also enhances the reactive surface area and reactivity of the material.

Aluminum hydroxide

 

04

Thermal Stability

Pseudo boehmite exhibits good thermal stability, allowing it to retain its properties at high temperatures. This makes it suitable for applications in catalytic processes and as a filler or binder in high-temperature environments, such as refractory materials.

 

Differences Between Ingredients and Applications of Al2O3 Powder, Pseudo-Boehmite and Boehmite
 

Al2O3
At present, there are more than ten crystal types of Al2O3, such as χ, ρ, γ, κ, δ, θ and α, among which α and γ are the most widely used. α -al2o3 mohs hardness of about 9, melting point of 2050℃, boiling point of 2980℃, thermal conductivity of 28.88W/ (m·K), has good chemical stability, high temperature resistance and wear resistance, can be used as refractory materials, ceramics, abrasive and other basic raw materials. Using its high thermal conductivity and good insulation, low sodium calcined alumina is used as thermal conductivity filler in electronics, information, new energy and other industries. Low sodium alumina also has good electrical insulation performance, high refractoriness, small sintering shrinkage and other characteristics, is the manufacture of electronic substrate, spark plug and vacuum shell and other electrical components and heat resistant or wear-resistant ceramics of high quality raw materials, in addition, low sodium ultrafine alumina in recent years widely used in the production of lithium battery diaphragm material. γ -al2o3 has a large specific surface area, good adsorption performance, good surface acidity and other characteristics, is the application of activated alumina, can be used as dry adsorbent, fine abrasive, catalyst and catalyst carrier, used in petrochemical, gas drying, automobile exhaust and industrial organic waste gas purification treatment and other fields.

 

Thin Diaspore
Boehmite, also known as boehmite and boehmite, is an important precursor of activated alumina with the molecular formula γ-AlOOH. It is a precursor of activated alumina with high order degree and complete crystallization, so it has better stability than pseudo-boehmite. Boehmite can withstand higher processing temperature, so boehmite can be used as a heat-resistant flame retardant for halogen-free copper clad plates, insulation products, plastic shells of devices that need to withstand higher processing temperature. In addition, boehmite is the main raw material for the production of activated alumina catalyst for coal chemical industry, can also be used for the production of lithium battery diaphragm, sodium sulfur battery β -al2o3 raw material, calcined alumina precursor. The low sodium ultrafine alumina prepared by the low sodium ultrafine boehmite precursor system has the characteristics of low sodium, high conversion, high insulation, good sintering performance and so on. It has been widely used in lithium battery diaphragm, microcrystalline ceramics, precision ceramics, foam ceramics, integrated circuit chips, aviation light source devices and so on.

 

Pseudoboehmite
Pseudo-boehmite is a kind of incomplete crystalline boehmite, with similar chemical composition with pseudo-boehmite, containing 1.25 ~ 2.0 crystal water, is a kind of incomplete crystalline hydrated alumina, also known as alumina monohydrate, pseudo-boehmite. The typical structure of pseudo-boehmite is very thin folded lamellar, which is an alumina hydrate with special spatial network structure. It has physical properties such as high specific surface area, large pore volume and chemical properties of colloidal thixotropy under acidic conditions. These characteristics of pseudo-boehmite make it widely used in many industries, in the petroleum industry as a catalyst, carrier, binder; Carrier coating used as catalyst for automobile exhaust treatment in automobile industry; Used as additive of flame retardant materials in the field of fire protection; In the paper industry used as high-grade inkjet printing paper in the ink absorbing coating; In the environmental protection industry as a gas purification adsorbent, drinking water defluorination agent, industrial sewage color and odor elimination agent; Used as a coating additive in t

 

Application of Pseudo Boehmite
 

Catalysts and Catalyst Supports

Pseudo boehmite is widely used as a catalyst support or carrier material in the production of catalysts. It provides a high surface area and porosity, which can enhance catalytic activity and improve selectivity in chemical reactions. It is commonly used in catalytic processes such as refining, petrochemicals, and emissions control.

 

Adsorbents and Desiccants

Pseudo boehmite is used as an adsorbent or desiccant to remove moisture, impurities, and unwanted compounds from gases and liquids. It can selectively adsorb certain molecules or ions, making it useful in applications such as gas drying, dehydration of solvents, and purification processes.

 

Coatings and Fillers

Pseudo boehmite is used as a filler or additive in coatings, paints, and polymer composites. It can improve the mechanical properties, stability, and flame retardancy of these materials. Additionally, it can act as a pigment dispersant and rheology modifier in coatings and paints.

 

Ceramic and Refractory Materials

Pseudo boehmite is used in the production of ceramic and refractory materials. It can act as a binder, providing strength and adhesion in shaping ceramic bodies. It also contributes to the formation of mullite, a refractory material with excellent thermal stability, in the firing process.

 

Paper and Textile Industry

Pseudo boehmite is used in the paper and textile industries as a coating or sizing agent. It can improve the surface properties of paper, such as ink receptivity and printability. In textiles, it can enhance fabric strength and stiffness.

 

Environmental Applications

Pseudo boehmite is used in various environmental applications. It can be used as an adsorbent for water treatment to remove heavy metal ions, organic pollutants, and phosphates. It is also used in wastewater treatment processes to remove impurities and contaminants.

 

Ultimate FAQ Guide to Pseudo Boehmite
 

Q: What is the difference between boehmite and Pseudoboehmite?

A: The higher water content compared to boehmite can be explained by a smaller crystallite size. While boehmite consists of relatively long AlOOH chains that have terminal H2O groups, the chains in pseudoboehmite are significantly shorter.

Q: What is the molecular formula of Pseudoboehmite?

A: Pseudoboehmite (AlOOH. xH2O) is an aluminum compound of the synthetic fine ceramic type, precursor of alumina. It has an orthorhombic structure (a = 0.366936 nm, b = 1.221 nm, c = 0.288679 nm), in which it is formed by two octahedra layers of oxygens partially filled by aluminum cations.

Q: What are the correlation and difference between nano alumina powder, pseudo-boehmite and boehmite?

A: Relevance
The metastable phases of χ, ρ, γ, κ, δ, θ and α can be observed during the firing of alumina hydrate. Pseudoboehmite is a kind of boehmite with incomplete crystallization. γ -al2o3 calcined at 400 ~ 700℃ is widely used as catalyst carrier, catalyst and adsorbent. γ -al2o3 calcined at 1100 ~ 1200℃ is used in high grade ceramics, petrochemical and other fields. Pseudo-boehmite can be converted into boehmite under specific hydrothermal conditions, realizing one-way transformation between them. In addition, both pseudo-boehmite and boehmite are precursors to alumina preparation. 
Differentiation  
Pseudoboehmite has the same molecular formula (AlOOH) as boehmite, which is a different crystal form of alumina monohydrate. It's called a quasi thin diaspore, because the thin diaspore is a crystallization of incomplete thin diaspore, they have very similar XRD graph, the two main diffraction peak position is almost the same, the difference only lies in the intensity of the diffraction peak is different, so compared with quasi thin diaspore, thin diaspore is bigger and higher crystallinity and crystal grains more complete. The average grain size is the main criterion to classify boehmite and pseudo-boehmite. The products with average grain size less than 10nm were regarded as pseudo-boehmite. Products larger than 50nm are regarded as boehmite; At 10-50nm, it is regarded as the intermediate product of boehmite and pseudo-boehmite, and the intermediate product can also be classified as pseudo-boehmite. 

Q: What is the production of pseudoboehmite?

A: The production of pseudoboehmite can be carried out by the sol-gel process using aluminum chloride or nitrate, for instance. This process consists in the use of a suspension of fine particles of colloidal dimensions (sol) that under certain conditions transform into a continuous network (gel), thus generating a semi-rigid mass for later drying. The particle size and specific surface area of pseudoboehmite influences the temperature of transformation of pseudoboehmite in the transitional alumina and into α-Al2O39. Previous reports describe the use of acetate ion in the synthesis of pseudoboehmite. It has been argued that the presence of the acetate ion in the alkaline reaction medium would be essential for obtaining thick plates morphology (near "2D" crystals). The synthesis of pseudoboehmite using aluminum nitrate and aluminum chloride as precursor using acetate in reaction synthesis has not been reported thus far.

Q: What is the use of Pseudoboehmite?

A: Pseudoboehmite is used as binder for FCC catalysts and adsorbents. It is also a raw material for activated alumina.

Q: What is the difference between gibbsite and boehmite?

A: Gibbsite is more common in a humid tropical climate, and boehmite is more common in a tropical climate with a long dry season.

Q: How is Pseudo Boehmite synthesized?

A: Pseudo Boehmite is typically synthesized through the hydrolysis of aluminum alkoxides or the precipitation of aluminum salts in the presence of specific additives

Q: What are the common applications of Pseudo Boehmite?

A: It has been widely used in various petroleum distillate hydrogenation catalysts, coal tar hydrogenation catalysts, pyrolysis gasoline hydrogenation fine catalyst, and a variety of chemical catalyst production.

Q: Can Pseudo Boehmite be used as an adsorbent?

A: Another important application of pseudo boehmite is as an adsorbent. Its high surface area and porosity enable it to effectively adsorb various molecules and impurities in liquids and gases. Used for water purification, impurity removal of petrochemical products, and gas separation. In addition, pseudo boehmite is often used to produce Activated alumina, and Activated alumina is widely used as adsorbent in various industrial applications.

Q: Can Pseudo Boehmite be used as a chemical catalyst?

A: One of the main applications of pseudo boehmite is as a catalyst. It is typically used in the petroleum industry to produce fuels, lubricants, and other petroleum based products. Pseudo boehmite is also used in the production of bulk chemicals such as fertilizers, polymers, and detergents. Its high surface area and porosity provide a large number of active site for catalytic reaction. Pseudo boehmite is also used as a carrier material in catalyst formulations. It is usually used to load precious metal catalysts, such as platinum or palladium, in various reactions. Its high surface area and strong acid resistance ensure that the active metal species remain firmly fixed on the carrier material during the reaction process.

Q: Can Pseudo Boehmite be used in the field of nanotechnology?

A: In recent years, pseudo boehmite has also been applied in the field of nanotechnology. Its high surface area and porosity make it an ideal material for producing nano porous materials such as zeolite and mesoporous materials. These materials have a wide range of applications, including catalysis, gas separation, and drug delivery.

Q: Why is Pseudo Boehmite so versatile?

A: Pseudo boehmite is a widely used material that can be applied in a wide range of industries. Its high specific surface area, high porosity and strong acid resistance make it an ideal material to be used as catalyst, adsorbent and carrier in various chemical process. Its importance in the field of nanotechnology is also increasing, as it is used to produce widely used nano porous materials. With the continuous development of technology, the application range of pseudo boehmite is likely to only continue to expand.

Q: How is boehmite made?

A: Particulate boehmite is used in the glass, catalyst and ceramic industries. Commercially, boehmite particles are prepared by digestion of aluminium trihydroxide (gibbsite, chemical formula: Al 2 O 3. 3H 2 O) in water at temperatures of 200°-250° C.

Q: What is the formula for Pseudoboehmite?

A: It is a "poorly crystallized" Al3+ compound with the composition Al2O3 * x H2O (1.0 < x < 2.0) with interplanar spacings increased in the [020]-direction to 0.67 nm in comparison with 0.617 nm for boehmite.

Q: Is Pseudo Boehmite environmentally friendly?

A: Pseudo-Boehmite is generally manufactured in commercial scale by processes involving neutralisation of aluminium salts by alkalis, acidification of aluminate salts and hydrolysis of aluminium alkoxide. In the said processes, there is a generation of large amounts of hazardous wastes due to large scale precipitation wastes due to large scale precipitation and washing, thereby leading to environmental pollution.

Q: Can Pseudo Boehmite be used in pharmaceuticals?

A: Pseudoboehmite is a hydrated aluminium compound produced by sol-gel process and used in drug delivery systems.

Q: Can Pseudo Boehmite be used in the petrochemical industry?

A: Yes. These characteristics of pseudo-boehmite make it widely used in many industries, in the petroleum industry as a catalyst, carrier, binder; Carrier coating used as catalyst for automobile exhaust treatment in automobile industry; Used as additive of flame retardant materials in the field of fire protection.

Q: How does Pseudo Boehmite differ from regular Boehmite?

A: Pseudoboehmite has higher specific surface area and larger pore volume than boehmite. The specific surface area of boehmite decreases gradually with the increase of temperature, and increases first and then decreases with the increase of temperature.

We're well-known as one of the leading pseudo boehmite manufacturers and suppliers in China. Please feel free to wholesale high quality pseudo boehmite for sale here from our factory. For price consultation, contact us.

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