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Trilobe Shape Catalyst Carrier

Catalyst Carrier

This product was made from activated alumina and false monohydrate aluminum adhesive. It owns stable surface, good crushing strength, low abrasion, suitable pore shape, low impurity, good active component impregnation.

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Product Description

Trilobe Catalyst Carrier & Activated Gamma Alumina Substrate - Technical Specification

Activated γ-Alumina Extrudates Custom Pore Architecture / ISO 9001 Certified

Trilobe Shape Catalyst Carrier / Substrate

Name: Trilobe Shape Catalyst Carrier
SKU: 0

High-performance gamma alumina (γ-Al₂O₃) carrier with optimized trilobe geometry. Engineered to significantly improve mass transfer, minimize internal diffusion limitations, and reduce system pressure drop in high-velocity fixed-bed chemical and hydroprocessing reactors.

Al₂O₃ Purity

≥ 98.5%

BET Surface Area

180 – 320 m²/g

Pore Volume

0.55 – 0.85 mL/g

Side Crush Strength

≥ 120 N/cm

Trilobe Geometry vs Standard Cylindrical Extrudates

Advanced multi-lobe structural engineering optimizes void space ratio and shortens intra-particle diffusion path length.

Figure 1: Cross-Sectional Packing Geometry & Flow Channels of Trilobe Extrudates

1. Significant ΔP Reduction (降低压降) ~30-40% Lower ΔP

Outer lobe channels increase bed void fraction, reducing flow resistance and gas/liquid pressure drop across the reactor bed.

2. Shorter Internal Diffusion Path (缩短扩散距离) High Selectivity

Reduces intra-particle diffusion distance, allowing reactants to penetrate deeper active sites and escaping before over-cracking.

3. Higher External Surface Area (高外表面积) +20% Outer Area

Offers greater external surface area per unit volume than round cylinders, enhancing external mass transfer rate constants.

4. Superior Mechanical Crush Resistance (高抗压强度) ≥ 120 N/cm

Multi-lobe inter-locking shape ensures high mechanical integrity under high fluid velocity and heavy static bed loads.

Recommended Application by Industrial Process

Targeted active metal loading carrier solutions for refinery, petrochemical, and gas synthesis reactors.

Refinery / Hydroprocessing

Hydrotreating & Hydrocracking

Ideal active metal support for Co-Mo, Ni-Mo, and Ni-W catalysts in Hydrodesulfurization (HDS) and Hydrodenitrogenation (HDN).

Extended cycle length in high-velocity beds
Resists heavy metals accumulation
Optimized fluid flow in trickle-bed reactors

Petrochemical / Olefins

Selective Hydrogenation

Serves as noble metal (Pt, Pd) carrier for acetylene, diolefin selective hydrogenation, and aromatics saturation.

High target product yield & selectivity
Minimizes green oil & coke formation
Homogeneous active metal dispersion

Gas Purification & Environmental

Claus Tail Gas & Syngas Treating

Used in COS/CS₂ hydrolysis, methanation, De-NOx SCR units, and VOCs catalytic oxidation systems.

Thermal stability up to 600°C
Customizable macropore/mesopore ratio
Strong chemical resistance to acid gases

Technical Data Sheet (TDS Specifications)

Comprehensive physical and chemical specifications for standard Trilobe Gamma-Alumina carriers.

Technical Property	1.2mm - 1.6mm Lobe	2.0mm - 2.5mm Lobe	3.0mm + Lobe
Appearance	White Trilobe Extrudates	White Trilobe Extrudates	White Trilobe Extrudates
Crystal Phase	Gamma Alumina (γ-Al₂O₃)	Gamma Alumina (γ-Al₂O₃)	Gamma Alumina (γ-Al₂O₃)
Equivalent Diameter (mm)	1.2 – 1.6	2.0 – 2.5	3.0 – 4.0
Cutting Length (mm)	3.0 – 8.0	4.0 – 10.0	5.0 – 12.0
BET Surface Area (m²/g)	220 – 300	200 – 280	180 – 250
Pore Volume (mL/g)	0.60 – 0.80	0.55 – 0.75	0.50 – 0.70
Side Crush Strength (N/cm)	≥ 100	≥ 130	≥ 160
Bulk Density (g/mL)	0.52 – 0.62	0.55 – 0.65	0.58 – 0.68
Al₂O₃ Content (wt%)	≥ 98.5%	≥ 98.5%	≥ 98.5%
Na₂O Content (wt%)	≤ 0.05%	≤ 0.05%	≤ 0.05%
Attrition Rate (wt%)	≤ 0.5%	≤ 0.5%	≤ 0.5%

Engineering Advantages & Customization

Precision chemical and physical control tailored to your specific catalyst formulation requirements.

1. Tailored Pore Size Distribution (PSD)

Bimodal or unimodal pore distribution (7nm - 25nm) can be customized to facilitate optimal impregnation and dispersion of active metals.

2. Low Sodium & Low Impurity Levels

Strictly controlled Na₂O (<0.05%) and Fe₂O₃ (<0.03%) prevent active site poisoning and unwanted secondary cracking reactions.

3. Hydrothermal Stability

Specially stabilized matrix maintains high BET surface area and mechanical strength under high-temperature steam and severe regeneration cycles.

4. High Dimensional Uniformity

Automated extrusion line and precision screening guarantee zero powder, low abrasion, and consistent pressure drop in fixed-bed reactors.

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