The catalytic activity of the binary composite catalysts Fe2O3-CoO/CaA and Fe2O3-CoO/ZSM-5 was studied. They were obtained by impregnation CaA ZSM-5 zeolites with aqueous solutions sulfates iron (FeSO4·7H2O) cobalt (CoSO4·7H2O). total metal content no more than 5%. Then, oxidizing burning at 720 °C for 60 min performed to produce oxides. It found that Fe-Co/CaA catalyst contains as CoFe2O4 comp...

Economic loss resulting from nickel (Ni) deficiency can occur in horticultural and agronomic crops. This study assesses whether excessive iron (Fe) can induce Ni deficiency. Both chelated Fe and diethylenetriaminepentaacetic acid (DPTA; a commonly used Fe-chelant) induces Ni deficiency in pecan [Carya illinoinensis (Wangenh.) K. Koch]. Foliar sprays of Fe [Fe-DPTA (1.1995 g·L)] during early pos...