The Synthesis of Novel Hierarchical Zeolites and Their Performances in Cracking Large Molecules

Novel hierarchical zeolites with continuous micrometer-scale macropores and mesopores other than popular nanometer-scale mesopores and micropores were synthesized by transforming the skeletons of the silica monolith into zeolites through both the steam-assisted conversion and nanocasting methods. Results showed the novel hierarchical zeolites exhibited high catalytic activity for catalytic cracking large molecules.