Preparation and application of magnetic solid acid /ZrO2/Fe3O4/WO3 for synthesis of fructone

Abstract: A synthesis route to /ZrO2/Fe3O4/WO3 solid acid catalysts with magnetism is reported through chemical co-precipitation method. The obtained solid acid catalysts are characterized in detail by X-ray diffraction, Different Scanning Calorimetry (DSC), Transmission Electron Microscopy (TEM), Vibrating Sample Magnetometer (VSM), N2 adsorption–desorption, Temperature-Programmed Pesorption (TPD) of ammonia. The results show that the introduction of WO3 and Fe3O4 strongly inhibit the phase transformation of zirconia and improve the thermal stability of zirconia. Furthermore, the obtained materials present super-paramagnetism and magnetism. The super acid exhibits high catalytic activity in forming fructone by condensation. [Copyright &y& Elsevier]