Beta Zeolite Catalyst

Beta zeolite (BEA framework) is the large-pore zeolite selected when reactants are too bulky for medium-pore materials such as ZSM-5. Its three-dimensional 12-membered ring channel system provides accessible acid sites for hydrocarbon conversion, while its tunable Si/Al ratio lets catalyst manufacturers balance activity, stability, and coke resistance.

Industrial users choose Beta zeolite for hydrocracking, alkylation, isomerization, and selected SCR formulations. The 3D BEA pore network reduces diffusion limitations in liquid-phase and heavy-feed reactions, giving Beta an advantage over one-dimensional or medium-pore zeolites when feed molecules need more space to reach active sites.

We supply Beta zeolite in H-form, NH₄-form, and Na-form precursors, with SiO₂/Al₂O₃ ratios from 20 to 200+. Powder, extrudate-ready, and custom particle-size grades are available for fixed-bed, slurry, and washcoat-compatible catalyst systems.

How to Select the Right Beta Zeolite Grade

The right Beta grade depends on the reaction family, feed size, and catalyst manufacturing route.

Si/Al ratio controls acid site density. Lower SiO₂/Al₂O₃ ratios (20-40) provide stronger acid density for hydrocracking and alkylation. Medium ratios (50-100) balance activity and stability for isomerization and aromatics conversion. Higher ratios (100-200+) reduce coke formation and improve hydrophobicity for applications where excessive cracking or water adsorption is undesirable.

Crystal and particle size affect diffusion and pressure drop. Smaller crystals improve access to acid sites in bulky-feed reactions and can reduce secondary cracking. Micron-grade powders are easier to formulate into extrudates, pellets, and washcoats. For fixed-bed systems, specify whether you need powder for formulation or shaped bodies ready for loading.

Ionic form determines whether the material is ready for acid catalysis or further processing. H-Beta is the standard acidic form. NH₄-Beta converts to H-Beta during calcination and is often preferred by catalyst formulators. Na-Beta is used as an ion-exchange precursor where downstream metal exchange or custom activation is required.

Hydrothermal stability matters for high-temperature regeneration and steam exposure. Beta is less hydrothermally stable than USY in severe FCC-type steam environments, but it offers stronger accessibility for bulky molecules in hydrocracking, alkylation, and liquid-phase acid catalysis.

Available Beta Zeolite Grades

Custom Si/Al ratios, crystal sizes, binders, and shaped forms are available on request. For catalyst screening, start with H-Beta-25 or H-Beta-50 when maximum acidity is required, and H-Beta-100 when coke control or stability is the main concern.

Key Specifications

Every shipment can include a Certificate of Analysis with SiO₂/Al₂O₃ ratio, BET surface area, Na₂O content, particle size distribution, LOI, and XRD crystallinity.

Hydrocracking and Heavy-Feed Conversion

Beta zeolite is widely used in hydrocracking catalyst systems because its large 12-MR pore network gives bulky feed molecules better access to acid sites than medium-pore zeolites. In bifunctional hydrocracking catalysts, the zeolite provides acid cracking and isomerization functions while the metal component supplies hydrogenation-dehydrogenation activity.

Compared with Y zeolite and USY, Beta can provide stronger shape selectivity for certain branched and aromatic intermediates. USY remains preferred for the most severe FCC-style hydrothermal environments, while Beta is often chosen when activity toward larger molecules and liquid-phase accessibility are more important.

Alkylation and Aromatics Conversion

In alkylation and aromatics conversion, Beta’s large-pore BEA structure allows reactants such as benzene, propylene, higher olefins, and substituted aromatics to diffuse into the pore system. This makes Beta a practical solid-acid option for ethylbenzene, cumene, and linear alkylbenzene chemistry where smaller-pore zeolites may restrict access.

Lower Si/Al Beta grades provide higher acid density for conversion, while medium Si/Al grades can improve selectivity and reduce deactivation. For liquid-phase alkylation, crystal size and binder selection are often as important as the Si/Al ratio because diffusion and external acid sites influence both conversion and byproduct formation.

Isomerization, Dewaxing, and SCR

Beta zeolite can be used in isomerization when the target molecule benefits from a large-pore acid catalyst rather than a narrower 10-MR channel system. It is also evaluated in dewaxing and hydroisomerization catalyst packages where accessibility and acidity must be balanced against cracking severity.

For SCR, Beta is a cost-effective zeolite support for Cu- or Fe-exchanged NOx reduction catalysts in selected stationary applications. It does not match Cu-SSZ-13’s low-temperature diesel SCR performance or hydrothermal durability, but Beta remains relevant where cost, high-temperature operation, or specific exhaust chemistry favors a larger-pore framework.

Beta vs ZSM-5 and Y Zeolite

Beta sits between medium-pore ZSM-5 and large-cage FAU zeolites such as Y and USY. ZSM-5 provides tighter shape selectivity and is preferred for FCC propylene additives, MTO/MTP, and VOC adsorption. Y and USY provide large supercages and are foundational FCC and hydrocracking materials. Beta is the practical choice when a 3D large-pore zeolite with strong acidity and good molecular accessibility is required.

For a decision-level comparison, see ZSM-5 vs Beta and Beta vs Y Zeolite.

Technical Documents

Download the Beta Zeolite TDS for SiO₂/Al₂O₃, BET, pore volume, particle size, Na₂O, LOI, and XRD data.

When requesting a sample, specify your target application, Si/Al ratio, required ionic form, particle-size range, and whether you need powder, extrudate, or binder-ready material.