Direct Synthesis of Novel FeSBA-1 Cubic Mesoporous Catalyst and Its High Activity in the tert-Butylation of Phenol

摘要

Iron-containing microporous molecular sieves have been attracting considerable attention due to their remarkable activity as catalysts for the reduction of nitrous oxides, oxidation of benzene to phenol, and the selective oxidation of methane. However, they are not useful for treating heavier feeds and the production of more bulky fine chemicals, owing to their small pore size. The discovery of mesoporous molecular sieves has expanded the available pore sizes of zeolites and zeotypes into the mesopore range, thus, revealing new possibilities in the catalytic transformation of large molecules. Mesoporous materials synthesized using cationic, anionic, non-ionic, and lizard-type surfactants possess well-ordered pore structures (hexagonal, cubic and lamellar) with high specific surface areas and high specific pore volumes. However, mesoporous materials with three-dimensional pore systems are more resistant to pore blocking and allow a faster diffusion of reactants than a one-dimensional array of pores.