synthesis and characterization of nap zeolite@fe3o4 nanocomposite functionalized with 2-aminopyridine as a micro-meso structure

Nowadays, overcome to agglomeration of nanoparticles is one of the most important problems in catalytic reaction. in this way, fe3o4 nanoparticles introduced to zeolite gel as a template and magnetic nanocomposite of nap zeolite@fe3o4 with different ratio were prepared, then in the second step to prepare acid-base catalyst nap zeolite@fe3o4 functionalized with 2- aminopyridine as a basic group. several techniques were used to evaluate the physical and chemical characterizations magnetic acid and base nanocomposites. the x-ray diffraction (xrd) confirm the presence of nap zeolite and fe3o4 in the composite. the scanning electron microscope (sem) graphs showed that much of fe3o4 was successfully coated by the nap zeolite layer. also, the vibrating sample magnetometer (vsm) results show that the magnetism of the products is stable even with introducing fe3o4 to zeolite. the transmission electron microscopy (tem) and burner emmet taller (bet) confirmed the presence of mesoporous phase in the surface of nap zeolite@fe3o4 and preparation a micro-meso structure.