Extra-large-pore zeolites: bridging the gap between micro and mesoporous structures.
The conditions required to produce zeolites with low framework density and extra-large pores are discussed. Correlations between framework stability and geometrical and topological descriptors are presented. An attempt has been made to rationalize the synthesis of extra-large-pore zeolites in terms of the synthesis mechanism, the directing effect of the organic structure directing agent (OSDA), the framework atoms, and the gel concentration. Extra-large-pore zeolites, including the recently discovered chiral mesoporous ITQ-37, are described and their catalytic and adsorption properties discussed. Finally, strategies are presented for the preparation of extra-large-pore zeolites with different pore topologies that can fulfill pre-established catalytic and adsorption targets.
Jiang
Jiuxing
J
Instituto de Tecnología Química (UPV-CSIC), Universidad Politécnica de Valencia, Avenida Los Naranjos s/n, 46022 Valencia, Spain.
Yu
Jihong
J
Corma
Avelino
A