Generation of mesoporosity in MOR zeolites synthesized under perturbation conditions

► Hierarchically mesoporous MOR zeolites synthesized via varying-temperature crystallizations and the use of ternary organic templates. ► Correlation of structural diversities with perturbation intensities towards synthesis conditions. ► Mesoporous zeolite synthesis approaches based on perturbation synthesis and pore-inducing role of zeolite structure defects.