Novel Manufacturing Method for Monolithic Zeolites

Zeolites are crystalline, microporous materials widely used in applications such as catalysis, adsorption, ion-exchange, separation, and chemical processing due to their high surface area, well-defined pore structures, and tunable physicochemical properties. Zeolites are commonly shaped into pellets or monolithic structures to facilitate handling and integration into reactors and other process equipment. Conventional pelletized zeolites, however, are susceptible to attrition, particularly when fluid flow causes pellets to move relative to one another. The resulting fine particles may reduce activity and contribute to downstream equipment malfunction or failure. Monolithic zeolites have been developed to address some of these limitations, but conventional fabrication techniques, such as extrusion, generally constrain the available geometries and produce substantially straight, low-tortuosity channels. Such structures can limit fluid–solid interactions and, consequently, mass transfer and process productivity.

 

Researchers at Arizona State University have developed a new manufacturing approach for producing monolithic zeolites, which may be relevant to catalytic, adsorption, and ion-exchange uses. More specifically, the resulting monoliths can be used for fuel and chemical production, gas separation and purification, water treatment, and recovery of valuable elements. This approach is intended to produce binderless, hierarchically porous monolithic zeolites with tailorable external pore structures. By bringing synthesis into the shaping workflow, this approach may enable zeolites to be produced on demand rather than relying on pre-synthesized zeolite powder as the feedstock.

 

This innovative process integrates zeolite synthesis in it to create complex monolithic zeolites with enhanced performance.