TY - JOUR
AU1 - Yocupicio-Gaxiola, Rosario
AU2 - Petranovskii, Vitalii
AU3 - Antúnez-García, Joel
AU4 - Fuentes Moyado, Sergio
AB - Two zeolite structures (mordenite and ZSM-5) were crystallized as a mesostructure by a one-pot hydrothermal method using a supramolecular assembly and applying cetyltrimethylammonium bromide (CTAB) as a surfactant. The as-prepared materials were subjected to a pillaring process with amorphous SiO2 forming MFI-P and MOR-P pillared systems. The textural properties were significantly improved due to the efficient pillaring process, i.e., surface areas increased from 255 to 687 m2/g for MFI and from 393 to 710 m2/g for MOR. The zeolitic materials grew in the form of lamellar mesostructures when CTAB was used as a bulk filler between the laminar arrays of zeolites as revealed by transmission electron microscopy and X-ray diffraction. The lamella sizes were in the range of ~ 2.5 nm, which is similar to one unit cell of the growing zeolite for both samples. These results are consistent with the theoretical calculations obtained by the Powdercell program for the X-ray diffraction powder pattern of the mesostructured lattice for both samples. It was found that calcining of the as-synthesized samples at 550 °C leads to a non-congruent collapse of the mesostructure.
TI - One-pot synthesis of lamellar mordenite and ZSM-5 zeolites and subsequent pillaring by amorphous SiO2
JF - Applied Nanoscience
DO - 10.1007/s13204-018-0935-1
DA - 2019-01-02
UR - https://www.deepdyve.com/lp/springer-journals/one-pot-synthesis-of-lamellar-mordenite-and-zsm-5-zeolites-and-LugL0SMEKX
SP - 557
EP - 565
VL - 9
IS - 4
DP - DeepDyve
ER -