Several methods exist for synthesizing hierarchical zeolites. These include:
Desilication: Partial removal of silicon atoms from the zeolite framework using alkaline solutions. Dealumination: Removal of aluminum atoms to create mesopores. Template-assisted methods: Use of organic or inorganic templates to create meso- or macropores. Hard templating: Involves imprinting a solid template into the zeolite structure, which is later removed.
Each method offers unique advantages and challenges, often chosen based on the desired properties of the final material.
