Synthesis of zeolite NaP with controllable morphologies

A series of NaP zeolite samples with different morphologies were synthesized via a facile template-free hydrothermal route with careful tuning of the synthetic conditions. All the samples were characterized by powder X-ray diffraction, scanning electron microscopy, chemical element analysis, 27Al MAS NMR, infrared spectroscopy, TG–DSC and N2 adsorption–desorption techniques. Influences of synthetic parameters were investigated systematically to achieve high quality pure NaP zeolite phases with various morphologies, such as diamond-like, cactus-like, and wool ball-like ones. In this study, it is further confirmed that the SiO2/Al2O3 ratio played an important role in the morphology control. In addition, the surface areas of NaP zeolite samples with various morphologies had considerable difference. Moreover, this morphology and surface area control approach might be further extended to the synthesis of other zeolite materials.

A series of NaP zeolite samples were synthesized via a facile template-free hydrothermal route with careful tuning of the synthetic conditions, which showed controllable morphologies.Figure optionsDownload as PowerPoint slideHighlights
► The pure-phase NaP zeolites were synthesized.
► Different SiO2/Al2O3 ratio was employed to control the morphologies of the NaP zeolites.
► Different morphologies of the NaP zeolites exhibit different characterization.