Few?Unit?Cell MFI Zeolite Synthesized using a Simple Di?quaternary Ammonium Structure?Directing Agent

Synthesis of a pentasil-type zeolite with ultra-small few-unit-cell crystalline domains, which we call FDP (few-unit-cell domain pentasil), is reported. made using bis-1,5(tributyl ammonium) pentamethylene cations as structure directing agent (SDA). This di-quaternary ammonium SDA combines butyl ammonium, in place the one commonly used for MFI synthesis, propyl and five-carbon nitrogen-connecting chain, six-carbon connecting chain SDAs that are known to fit well within pores. X-ray diffraction analysis electron microscopy imaging indicate ca. 10 nm domains organized hierarchical micro-/meso-porous aggregates exhibiting mesoscopic order an aggregate particle size up 5 ?m. Al Sn can be incorporated into framework produce active selective methanol-to-hydrocarbon glucose isomerization catalysts, respectively.