What is de-aluminification?

De-aluminification is a chemical process that involves the removal of aluminum from a substance, typically in the context of altering the composition of zeolites or aluminosilicate materials. This process can enhance the material's catalytic properties or modify its adsorption characteristics. It often involves treatment with acidic solutions that selectively dissolve aluminum, thereby changing the material's structure and performance. De-aluminification is significant in various industrial applications, including catalysis and environmental remediation.