... . size:3,6,9,13,19,25,38,50mm Inert Ceramic Balls as Catayst Supports The 23-25% Al2O3 Inert Alumina Ceramic Balls ... As a catalyst reactor coverage tower packing materials and support, the major role is to increase distribution of gas or liquid ... , support and protect the intensity of low strength activity catalyst.Chemical composition Al2O3+SiO2Al2O3Fe2O3MgOK2O ...