摘要： In situ generation of Fe₃O₄ magnetic nanoparticles (Fe₃O₄AT-mont.) into the nanopores of modified montmorillonite (AT-mont.) clay has been carried out. Modification of the montmorillonite was done by acid (4 M HCl) activation under controlled conditions for generating nanopores, which act as a “host” for the Fe₃O₄ nanoparticles. The synthesized Fe₃O₄AT-mont. was characterized by PXRD, TEM, SEM-EDX, XPS, VSM and surface area analysis. The average particle size of Fe₃O₄ nanoparticles was found to be around 10 nm and exhibit a face centered cubic (fcc) lattice geometry. Fe₃O₄AT-mont. showed efficient catalytic activity for the Baeyer–Villiger oxidation of various cyclic and aromatic ketones in the presence of hydrogen peroxide as an oxidant at room temperature under solvent free conditions and exhibited conversion of up to 98%. The catalyst was magnetically recovered and recycled up to the third run without any significant loss of efficiency. 出版日期： 2016-01-01 出處： Green chemistry : an international journal and green chemistry resource : GC, 2016-01, Vol.18 (9 p.2843-2850), p.2843-2850 資源來源： Royal Society of Chemistry 識別號： ISSN: 1463-9270 識別號： DOI: 10.1039/c5gc02668g
