Common catalysts with Brønsted acidity include zeolites, sulfonated polymers, and various metal oxides. Zeolites, for example, have a crystalline aluminosilicate framework with Brønsted acid sites that can catalyze a wide range of reactions. Sulfonated polymers like Nafion are used in fuel cells and other electrochemical applications. Metal oxides such as sulfated zirconia also exhibit strong Brønsted acidity and are used in industrial processes like alkylation and isomerization.
