Studies On Preparation And Properties Of Magnetic Microspherical Alumina And Microspherical Catalysts

The catalyst and carrier is now gradually tending to be functional and ultrafine materials. The microspherical alumina is widely used as catalyst or carrier in the fields of petrochemial industry and fine chemical industry on account of high specific surface area, large pore volume, excellent pore structure and proper pore size distribution maintaining the advantage of spherical form. The multifunctional magnetic catalyst carrier with certain complex structure can be prepared by combining the magnetic spinel ferrite with the frame carrier Al₂O₃. The prepared carrier can be used in various catalytic reactions after loading different active components. The magnetic catalyst can improve catalytic performance and can be conveniently orientation, separation and callback during the catalytic process. The amorphous ally catalyst has been used in the magnetically stabilized bed (MSB) reactor, promoting the development of the MSB process, but it has the disadvantages of the single active component and limited regulation range of the catalyst pore structure. In order to research a new type of catalyst with excellent catalyst performance used in the field except hydrogenation during...