synthesis and characterization of nanocrystalline coapo-5: structural and morphological analysis by alteration on hydrothermal parameters

Nano-zeolite coapo-5 as a member of afi family, was synthesized via a hydrothermal treatment, and structurally characterized using x-ray diffraction (xrd), scanning electron microscope (sem), and energy dispersive x-ray analysis (edax). the effects of crystallization temperature and time on the structure of these powder products were studied. xrd patterns of the synthesized powders revealed a high-crystallinity and pure phase of afi. sem images and scherrer equation showed the nano-size of the obtained coapo-5. also, sem images showed nano-wires as small as 30-50 nm in coapo-5 structures. according to edax analysis, p/al ratio of the prepared coapo-5 powder was about 1.5. crystal sizes and the crystallinity of coapo-5 reduced at higher temperatures of hydrothermal treatment. on the other hand, the larger crystals grew by increasing the crystallization time from 24 to 48 h.