HYDROTALCITE-ZEOLITE COMPOSITES AND CATALYSTS THEREOF BY NOX STORAGE METHOD

摘要

Disclosed herein is a hydrotalcite-zeolite composite including zeolite exchanged with alkali metal ions or alkali earth metal ions and hydrotalcite substituted with transition metals, and a catalyst for storing nitrogen oxides produced using the composite. The catalyst for storing nitrogen oxides can store a large amount of nitrogen oxides and has excellent thermal and mechanical stability and resistance to sulfur dioxide poisoning.