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Extrude 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

Extruded Shaped Catalyst Carrier & Alumina Substrates - Technical Specification

Engineered Extrusion Shapes ISO 9001 Certified / Tailored Porosity

Extruded Shaped Catalyst Carriers & Substrates

Name: Extrude Shape Catalyst Carrier
SKU: 0

Advanced porous alumina, silica-alumina, and titania catalyst carriers engineered with optimized geometric profiles (Trilobe, Quadlobe, Rings, and Multi-hole Extrudates). Designed to maximize geometric surface area, enhance effective diffusion, and minimize bed pressure drop in fixed-bed catalytic processes.

Available Geometries

Tri / Quad-Lobe, Ring, Star

BET Surface Area

120 – 350 m²/g

Pore Volume

0.45 – 0.90 mL/g

Pressure Drop Reduction

Up to 45% Lower ΔP

Extrusion Cross-Section Geometries & Fluid Benefits

Comparing non-spherical geometric profiles and their hydrodynamic efficiency in reactor beds.

Figure 1: Cross-Sectional Geometry Schematics of Extruded Catalyst Shapes

1. Trilobe (三叶草型) 1.2mm – 3.0mm

Increases external surface area by ~20% compared to cylindrical extrudates, shortens intra-particle diffusion path, and cuts pressure drop by 30%.

2. Quadlobe (四叶草型) 1.3mm – 3.2mm

Combines high bed voidage with exceptional mechanical side crush strength. Excellent for heavy gas oil and high-load hydroprocessing beds.

3. Hollow Ring / Cylinder (环形/空心柱) OD: 3mm – 10mm

Provides maximum void fraction for gas-phase reactions. Unlocks ultra-low bed resistance in high gas hourly space velocity (GHSV) reactors.

4. Multi-Hole / Wagon Wheel (多孔/车轮型) Custom Sizes

Dual internal/external fluid exposure optimizes heat and mass transfer while preventing hot spots in exothermic synthesis reactions.

Application Matching by Reactor Type

Targeted catalytic processing applications optimized for custom shape extrudates.

Refinery / Hydrotreating

Hydrodesulfurization (HDS / HDN)

Trilobe & Quadlobe shapes are industry standards for CoMo/NiMo active phases in diesel, naphtha, and VGO hydrotreaters.

Prevents bed plugging & fouling
Increases active site accessibility
Extends run length cycle time

Petrochemical & Gas

Selective Hydrogenation & Dehydro

Hollow Ring & Wagon Wheel shapes are tailored for acetylene/butadiene selective hydrogenation and steam reforming.

Reduces side-product coke formation
Optimizes heat transfer efficiency
Lowers compressor power costs

Environmental Catalysts

VOCs Oxidation & De-NOx SCR

Custom extruded profile substrates carrying Noble Metals (Pt, Pd) or Vanadia-Titania for industrial emission control.

High thermal shock endurance
Resists high dust load erosion
Customizable macro/mesopore ratio

Technical Data Sheet (TDS Specifications)

Physical & chemical property guidelines across primary alumina extrusion shapes.

Technical Property	Trilobe / Quadlobe	Hollow Ring	Custom Multi-Hole
Primary Material Phase	Gamma / Theta Al₂O₃	Gamma / Alpha Al₂O₃	Alumina / Silica-Alumina
Equivalent Diameter Range	1.2 mm – 3.2 mm	4.0 mm – 10.0 mm	5.0 mm – 15.0 mm
BET Surface Area (m²/g)	180 – 320	120 – 240	100 – 220
Pore Volume (mL/g)	0.55 – 0.85	0.50 – 0.75	0.45 – 0.70
Side Crush Strength (N/cm)	≥ 110 N/cm	≥ 80 N/cm (Radial)	≥ 120 N/cm
Bulk Density (g/mL)	0.50 – 0.65	0.42 – 0.58	0.48 – 0.62
Al₂O₃ Purity (wt%)	≥ 98.5%	95.0% – 99.5%	≥ 92.0%
Na₂O Impurity (wt%)	≤ 0.05%	≤ 0.10%	≤ 0.08%
Abrasion Loss (wt%)	≤ 0.5%	≤ 0.8%	≤ 0.6%

Engineering Advantages of Shaped Extrusions

Precision manufacturing techniques delivering optimal catalytic efficiency and durability.

1. Enhanced Internal Effectiveness Factor (η)

Shortened diffusion distances allow reactants to rapidly enter internal active pores and escape, preventing secondary cracking or over-reaction.

2. Superior Bed Voidage & Flow Distribution

Irregular cross-sections prevent dense packing alignment, keeping void fraction high (>45%) and reducing overall energy consumption for blowers and pumps.