Mesoporous palladium-copper ferrites as highly efficient and magnetically separable catalysts for Suzuki coupling reaction

Article abstract of DOI:10.1016/j.materresbull.2015.09.013

Mesoporous Cu-Pd ferrites were prepared by using MCM-41 and SBA-15 mesoporous molecular sieves as hard templates and well characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), ICP-atomic emission spectroscopy, N₂ adsorption-desorption and X-ray photoelectric spectroscopy (XPS). Compared with samples prepared by the sol-gel auto-combustion methods, the as-prepared mesoporous ferrites have shown uniform pore size and much higher specific surface areas. The samples showed a remarkably high activity in connection with the Suzuki coupling reaction, especially Cu_0.99Pd_0.01Fe₂O₄ prepared by using MCM-41 as template obtained an excellent TOF as high as 36.9 × 10³ h^-1 and no obvious decrease in the activity was observed after ten consecutive runs.