ZSM-22 Zeolite Catalyst | High-Selectivity Catalyst for Dewaxing & Isomerization | Supplier

1. Product Introduction & Core Advantages

Aogochem's ZSM-22 Zeolite Catalyst is a highly specialized molecular sieve belonging to the TON framework type. Its defining characteristic is a system of very small, non-interconnected one-dimensional pore channels. This unique structure imposes extreme shape selectivity, allowing only linear and slightly branched molecules to enter and react. Combined with strong acidity, it is engineered for exceptional performance in selective hydroisomerization, a key step in modern dewaxing processes.

ZSM-22 is the catalyst of choice for lubricant base oil hydrodewaxing, where it selectively isomerizes long-chain n-paraffins into branched isomers, dramatically lowering the pour point without significant cracking loss. It is also highly effective for improving the cold flow properties of diesel fuel. For refineries in the MENA and CIS regions, this catalyst unlocks the ability to produce high-value, low-pour-point lubricants and winter-grade diesel from local feedstocks, maximizing asset value.

We formulate ZSM-22 with tailored acidity and optimized metal function (e.g., platinum or palladium) to create a highly active and selective bifunctional catalyst. Its robust structure ensures stability under high-pressure hydrogen environments. Partnering with Aogochem provides access to this premium catalyst technology, deep application expertise, and dedicated support for your hydroprocessing units, helping you achieve superior product quality and operational efficiency.

2. Technical Specifications & Performance Data

ZSM-22's performance is defined by its constrained pore geometry and bifunctional nature. Aogochem provides customized formulations.

3. Primary Application Industries

ZSM-22’s niche is in high-selectivity isomerization, making it critical for premium fuel and lubricant production.

• Lube Base Oil Hydrodewaxing: This is the primary and most valuable application. In modern lube oil plants, ZSM-22-based catalysts selectively isomerize wax molecules (long n-paraffins) in the feedstock. This converts them into high-viscosity-index (VI) iso-paraffins, thereby lowering the pour point of the final base oil without resorting to extraction or solvent dewaxing, resulting in higher yields of premium Group II+ and Group III base oils.

• Diesel and Jet Fuel Cold Flow Improvement: Used to isomerize n-paraffins in middle distillate streams, effectively reducing the cloud point and pour point of diesel and improving the freeze point of jet fuel. This enables production of winter-grade fuels and meets stringent cold flow specifications.

• Other Isomerization Processes: Can be applied to the isomerization of other linear hydrocarbon streams where high selectivity to branched isomers is desired, such as in certain petrochemical feedstocks.

4. Why Partner with Aogochem for ZSM-22 Catalyst?

Aogochem delivers advanced catalyst solutions for the demanding and high-value hydroisomerization market.

• Expertise in Constrained-Pore Zeolites: We possess specialized knowledge in synthesizing and formulating TON-structure zeolites like ZSM-22, focusing on maximizing the unique shape selectivity that defines its performance advantage in dewaxing.

• Optimized Bifunctional Catalyst Design: Our strength lies in expertly combining the tailored ZSM-22 zeolite with the optimal metal function and binder system. This creates a balanced catalyst that maximizes isomer yield while maintaining excellent activity retention and mechanical strength.

• Focused on Yield & Product Quality: Our formulations are engineered to achieve the highest possible yield of desirable iso-paraffins, directly impacting the profitability of your dewaxing unit by maximizing production of high-value lube base oils or low-pour-point fuels.

• Technical Partnership for Hydroprocessing: We provide comprehensive technical support for the integration, start-up, and optimization of ZSM-22 catalysts in your hydrotreating/hydrocracking units, ensuring you realize the full performance potential.

5. Handling & Operational Guidelines

• Loading & Sulfiding: As a bifunctional catalyst containing noble metals, ZSM-22 often requires careful presulfidation to activate the metal sites before contact with the hydrocarbon feed. This must be performed exactly according to the detailed procedure provided by Aogochem, typically using a controlled mixture of H2 and a sulfiding agent.

• Operation: Operate within the strict temperature, pressure, and hydrogen-to-oil ratio windows. The catalyst’s high selectivity depends on precise control of operating conditions to favor isomerization over cracking. Monitor product pour point/cloud point and distillation yield closely.

• Regeneration: Deactivation occurs slowly through coke deposition and possible sintering. Regeneration involves careful coke burn-off followed by a re-sulfiding step. This is a specialized procedure best performed ex-situ by certified catalyst regeneration vendors in consultation with Aogochem.

• Storage & Safety: Store in a dry, sealed, and inert environment. The catalyst may be pyrophoric after reduction/sulfiding. Always handle with appropriate PPE and under inert atmosphere as specified in the Material Safety Data Sheet (MSDS/SDS).

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