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Product classification

Macroporous alumina microspheres

Catalyst Carrier

Alumina microspheres are an innovative catalyst support, distinguished by their fine particle size and expansive specific surface area, facilitating rapid surface catalytic reactions. Their porous structure also enables effortless impregnation and loading with elements like rare earth metals, resulting in a highly active catalys

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Product Description

Macroporous Alumina Microspheres | Catalyst Support & Adsorbent

Macroporous · High-Flow Spherical Alumina · Optimized Pore Network

Macroporous Alumina Microspheres

Name: Macroporous alumina microspheres
SKU: 0

Engineered spherical alumina microspheres with interconnected macroporosity (pore diameters > 50 nm) and high surface area. Designed for demanding catalyst support, high-flow adsorption, and heavy-metal removal applications where rapid mass transfer and low pressure drop are critical.

Morphology

Spherical Beads (0.2 – 3 mm)

BET Surface Area

180 – 280 m²/g

Macropore Volume

≥ 0.45 mL/g

Crush Strength

≥ 35 N (avg.)

Spherical Geometry & Internal Architecture

Bimodal pore structure combines macroporous transport channels with mesoporous active sites.

Figure 1: Cross-section of macroporous alumina microsphere (interconnected pore network)

Controlled Macro-Meso Porosity 0.2 – 3.0 mm

Spherical shape ensures uniform packing density, while tailored macropores (50–200 nm) facilitate rapid molecular diffusion, reducing internal mass-transfer limitations in liquid-phase reactions.

High Mechanical Integrity ≥ 35 N/bead

Optimized binder system and sintering profile yield strong, attrition-resistant spheres suitable for fixed-bed and moving-bed reactors with low fines generation.

Key Application Fields

From petrochemical catalysis to advanced water treatment — macroporous microspheres excel.

Refining & Petrochem

Hydrotreating & Resid Upgrading

Used as catalyst support for heavy oil hydroprocessing, where large molecules require accessible pore architectures and stable alumina matrix.

High metal (Ni, Mo, Co) loading capacity
Resists fouling from asphaltenes
Extended cycle length

Adsorption / Separation

Selective Adsorption & Ion Exchange

Ideal for removal of fluoride, arsenic, and heavy metals from aqueous streams, as well as drying and purification of organic solvents.

Fast adsorption kinetics
High capacity for anions/cations
Regenerable with mild elution

Environmental & Chemical

Scrubbing & Catalytic Oxidation

Deployed in VOC abatement, ozone decomposition, and selective catalytic reduction (SCR) units as a robust, thermally stable support.

Thermal stability up to 1200 °C
Resists acid/basic gas attack
Low pressure drop in packed beds

Technical Specifications (TDS)

Standard physical and chemical property benchmarks for macroporous alumina microspheres.

Technical Property	Standard Specification Range	Customization Options
Crystal Phase	Gamma / Theta / Mixed	High-purity Alpha or tailored phase
Particle Size (mm)	0.2–0.5, 0.5–1.0, 1.0–2.0, 2.0–3.0	Custom cuts (e.g., 0.3–0.6 mm)
BET Surface Area (m²/g)	180 – 280	Low/high surface area variants
Total Pore Volume (mL/g)	0.65 – 0.95	Optimized for specific diffusion needs
Macropore Volume (>50 nm)	≥ 0.45 mL/g	Controlled macro/meso ratio
Crush Strength (N/bead, avg.)	≥ 35 (size dependent)	High-strength formulations available
Al₂O₃ Purity (wt%)	≥ 98.5 %	Low Na₂O, low SiO₂ grades
Bulk Density (g/mL)	0.55 – 0.80	Calibrated for reactor loading