Name: Calcined active α-alumina microspheres
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Product classification

Calcined active α-alumina microspheres

Catalyst Carrier

After high temperature calcination, the quality is extremely hard, but it has a special specific surface area, pore volume and pore size. It can eliminate the diffusion effect in the gap. In the process for selective oxidation, it can reduce the side reactions of deep oxidation, and can form a special shell structure during the impregnation process, which effectively improves the reaction performance.

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Product Description

Calcined Active Alpha-Alumina Microspheres Catalyst Carrier

Advanced Sintered Microspheres High Phase Purity / Precision Thermal Stability

Produced via advanced granulation and high-temperature calcination processes, these active alpha-alumina microspheres offer precise particle sphericity, exceptional thermal stability, and optimized pore structures tailored for demanding high-temperature catalytic synthesis and fixed-bed operations.

Particle Morphology

High-Precision Uniform Sphere

Phase Structure

Optimized Alpha / Active Matrix

Crush Strength

≥ 60 – 120 N/particle

Thermal Limit

Up to 1200°C Continuous

Microstructure & Sphericity Architecture

Visualizing uniform spherical configuration designed to eliminate channeling and lower reactor pressure drops.

Figure 1: High-Sphericity Calcined Alumina Microspheres (Smooth Surface & Controlled Porosity)

Precision Calcined Matrix (高温精密煅烧) 1.0mm – 5.0mm

The controlled thermal treatment locks in phase purity, preventing structural shrinking or sintering collapse during high-exotherm industrial reactions.

Target Applications & Reactor Suitability

Engineered for high-efficiency performance across petrochemical synthesis, selective oxidation, and environmental emission control.

Petrochemical Synthesis

Catalytic Reforming & Dehydrogenation

Serves as a robust carrier for noble metal or transition metal catalysts in high-severity hydrocarbon transformation loops.

Withstands rapid thermal cycling
Inhibited coke deposition
Optimized active metal dispersion

Environmental Catalysis

VOC Abatement & Exhaust Scrubbing

Provides a chemically inert, high-strength framework for catalytic oxidation systems neutralizing industrial waste gases.

Resistant to acidic byproduct corrosion
High mechanical abrasion durability
Stable long-term operation

Specialty Chemical Processes

Fixed-Bed Reactor Packing

Functions as active support beads in multi-tubular or adiabatic fixed-bed reactors requiring strict flow predictability.

Uniform bed void distribution
Eliminates hot-spot channeling
Low dusting and attrition metrics

Technical Specifications (TDS Data)

Standard physical and chemical parameters for Calcined Active Alpha-Alumina Microspheres.

Technical Property	Standard Specification Range	Customization Options
Crystal Phase	Alpha-Al₂O₃ + Transition Active Matrix	Pure Alpha inert or customized active ratio
Standard Particle Size	1.0–2.0 mm, 2.0–3.0 mm, 3.0–5.0 mm	Narrow-cut customized sieve fractions
BET Surface Area	50 – 150 m²/g (Active Grade)	Tailored porosity and pore-volume tuning
Pore Volume	0.35 – 0.55 mL/g	Optimized macro/mesopore distribution
Single Particle Crush Strength	≥ 60 – 120 N (Size Dependent)	Heavy-duty reinforced mechanical grade
Bulk Density	0.70 – 0.95 g/mL	Calibrated for specific reactor loading
Al₂O₃ Purity	≥ 99.0 wt%	Ultra-low silica and trace iron options
Attrition Loss	≤ 0.5 wt%	Enhanced surface sintering treatment

Core Engineering Advantages

Key performance attributes ensuring maximum lifespan and efficiency in harsh industrial environments.

1. Superior Thermal Stability

Maintains structural integrity and prevents surface area collapse under continuous high-temperature exposure up to 1200°C.

2. High Sphericity & Uniformity

Precise spherical geometry ensures optimal packing density, preventing localized flow channeling and excessive pressure drops.

3. Excellent Mechanical Resistance

High crush strength and low attrition rates minimize dust generation during intense loading and operational cycles.

4. Tunable Porosity & Purity

Customizable pore distribution and ultra-high alumina purity prevent active site poisoning and unwanted side reactions.

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