Gamma Alumina (γ-Al₂O₃) | High-Surface-Area Catalyst Support & Adsorbent | Catalyst Carrier & Industrial Adsorbent

Aogochem supplies high-performance Gamma Alumina (γ-Al₂O₃), the essential high-surface-area material for catalyst supports and industrial adsorbents. ...

Product Description:

1. Product Introduction & Core Advantages

Aogochem's Gamma Alumina (γ-Al₂O₃) is the most widely used and industrially critical transition form of alumina. Produced through the controlled calcination of aluminum hydroxides like boehmite, it is engineered to possess a high specific surface area (150-400 m²/g), a tunable pore structure, and optimal surface acidity. These properties make it the indispensable material of choice for creating robust, high-performance catalyst supports and efficient adsorbents across countless chemical processes.

As the primary support material for catalysts in petroleum refining (hydrotreating, reforming), petrochemical production, and environmental catalysis, gamma alumina maximizes the dispersion and activity of precious metals. It also serves as a highly effective industrial desiccant for drying gases and liquids, and as an adsorbent for purification. For the process industries in MENA and CIS, it is a foundational material enabling efficient, reliable, and scalable operations.

We supply gamma alumina in various forms—powder, spheres, and extrudates—with customizable surface area, pore size, and acidity to precisely match your application requirements. Its excellent thermal stability ensures longevity. Partnering with Aogochem provides access to consistent, high-quality gamma alumina, backed by deep technical expertise in material selection and application engineering for your specific catalytic or adsorption challenges.

2. Technical Specifications & Performance Data

The versatility of gamma alumina stems from its adjustable physicochemical properties, which Aogochem tailors for specific uses.

Parameter	Unit	Typical Specification / Description	Importance / Notes
Crystalline Phase	-	Gamma (γ-Al₂O₃)	The metastable, high-surface-area phase crucial for catalysis and adsorption.
Specific Surface Area (BET)	m²/g	150 - 400 (Customizable)	High surface area is paramount for dispersing active catalytic phases and providing adsorption sites.
Pore Volume	cm³/g	0.3 - 0.8	Influences the accessibility of reactants to active sites and the capacity for adsorption.
Average Pore Diameter	nm (Å)	3 - 15 (30 - 150 Å)	Can be engineered as mesoporous material to facilitate diffusion of reactant molecules.
Acidity (Surface Properties)	-	Adjustable (Amphoteric)	Provides both acidic and basic sites, which can be modified to influence catalytic selectivity.
Forms Available	-	Powder, Spherical Beads, Extrudates (Pellets, Trilobes)	Selection depends on reactor type (fixed-bed, fluidized-bed) and process requirements.
Thermal Stability	°C	Stable up to ~800-1000°C	Transforms to the low-surface-area alpha (α) phase at higher temperatures, limiting its use range.
Chemical Purity (Al₂O₃)	wt%	> 99%	High purity minimizes impurities that could poison catalysts or interfere with adsorption.

3. Primary Application Industries

Gamma alumina is a cornerstone material in industries where surface-mediated reactions and separations are key.

Catalyst Support (Dominant Application):

Petroleum Refining: The primary support for hydrotreating (HDT), hydrocracking, and catalytic reforming catalysts (supporting Co-Mo, Ni-Mo, Pt-Re metals).
Petrochemicals & Chemicals: Used in catalysts for selective hydrogenation, dehydrogenation, and synthesis of various intermediates.
Automotive & Environmental: Key component in automotive three-way catalysts (TWCs) and catalysts for VOC abatement.

Adsorption & Separation:

Gas & Liquid Drying: An effective desiccant for drying air, natural gas, refrigerants, and organic solvents due to its high water adsorption capacity.
Purification: Used as an adsorbent to remove impurities like fluoride from water, or sulfur compounds from streams.

Ceramics & Coatings: As a reactive precursor in advanced ceramics and as a washcoat layer on monolithic substrates (e.g., in automotive catalysts).

4. Why Partner with Aogochem for Gamma Alumina?

Aogochem delivers not just a material, but a precisely engineered component for your process success.

Tailored Pore Engineering: We specialize in customizing the pore size distribution and surface chemistry of our gamma alumina to optimize performance for your specific reaction or separation, whether you need wide pores for bulky molecules or a specific acid-site density.
Uncompromising Quality for Demanding Applications: For catalyst manufacturers, consistency in surface area, purity, and attrition resistance is non-negotiable. Our rigorous quality control ensures every batch provides a reliable foundation for your high-performance catalysts.
Deep Understanding of Application Needs: We support a wide range of industries. Our technical team can advise on the optimal gamma alumina form, size, and properties for your reactor design, whether it's a massive fixed-bed hydrotreater or a specialized adsorption column.
Strategic Supply for Growth Markets: As a reliable supplier to the expanding refining and chemical sectors in MENA and CIS, we provide the material consistency and logistical support necessary for your long-term operational planning and growth.

5. Handling & Operational Guidelines

Storage: Store in a dry, sealed environment. Gamma alumina is hygroscopic and will adsorb atmospheric moisture, which can affect its weight, flow properties, and potentially its surface chemistry. Keep containers tightly closed.
Processing as a Support: For catalyst manufacture, gamma alumina powder is often peptized, mixed with active precursors, shaped, dried, and calcined. The specific conditions (calcination temperature) are critical to preserve its high-surface-area gamma phase.
Use as an Adsorbent/Desiccant: In adsorption towers, ensure proper gas/liquid pretreatment to remove contaminants (e.g., aerosols, heavy hydrocarbons) that could foul the pores. Regeneration is typically achieved by heating to 200-350°C under a flow of dry gas.
Safety: Handle as a fine dust. Use standard personal protective equipment (PPE) such as gloves, safety glasses, and a dust mask to prevent mechanical irritation. Refer to the Safety Data Sheet (SDS) for comprehensive information.