Supported sulfonic acid on magnetic nanoparticles used as a reusable catalyst for rapid synthesis of α-aminophosphonates

Sulfonic acid was anchored on the surface of silica-coated cobalt ferrite core to obtain a new magnetically separable catalyst. The resultant composite was characterized by various techniques, including FT-IR, X-ray diffraction, FESEM, energy-dispersive X-ray, TEM, TGA, and vibrating sample magnetom...

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Bibliographic Details
Published inInorganic and nano-metal chemistry Vol. 47; no. 4; pp. 591 - 596
Main Authors Afshari, Mozhgan, Gorjizadeh, Maryam, Naseh, Mohammad
Format Journal Article
LanguageEnglish
Published Taylor & Francis 03.04.2017
Subjects
Cobalt ferrite
magnetic nanoparticles
sulfonic acid
surface functionalization
α-aminophosphonates
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Summary:Sulfonic acid was anchored on the surface of silica-coated cobalt ferrite core to obtain a new magnetically separable catalyst. The resultant composite was characterized by various techniques, including FT-IR, X-ray diffraction, FESEM, energy-dispersive X-ray, TEM, TGA, and vibrating sample magnetometer. The immobilized sulfonic acid was shown to be an efficient heterogeneous catalyst for the synthesis of α-aminophosphonates under solvent-free conditions at room temperature. The catalyst is readily recovered by simple magnetic decantation and can be recycled 7 times with no significant loss of catalytic activity.
ISSN:2470-1556
2470-1564
DOI:10.1080/15533174.2016.1186096