Catalysis Letters p. 3384 - 3394 (2019)
Update date:2022-08-05
Topics:
Piri, Tayebeh
Peymanfar, Reza
Javanshir, Shahrzad
Amirnejat, Sara
Abstract: The design and application of environmentally friendly catalysts to reduce the quantity of toxic wastes is critical for improving?the chemical synthesis process. Therefore, BaFe12O19/Al2O3, a magnetic mesoporous nanocomposites, were designed synthesized and characterized using different techniques such as energy dispersive X-ray (EDX) spectroscopy, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FESEM), Brunauer–Emmett–Teller?(BET) adsorption method, and vibrating sample magnetometry (VSM). The prepared BaFe12O19/Al2O3 display a high surface area (1773.22?m2/g) with an average pore diameter of 3.946?nm from nitrogen sorption analysis. In addition, the synthesized nanocomposites prove to be an active heterogeneous Lewis acid catalyst for the solvent free synthesis of α-aminophosphonates at ambient temperature, through three-component reaction of aldehydes/ketones, amines and triethyl phosphite. The use of this catalyst results in an effortless magnetic recoverability and recyclability, high yield and short reaction time under solvent-free conditions. Graphic Abstract: [Figure not available: see fulltext.].
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