... ,10,13,19,25,38,50mm XINGFENG Catalyst bed support media 17% are the most widely used support media in the world because of ... shock, This makes them all ideal choice for support of all types of catalyst. Chemical composition Al2O3+SiO2Al2O3Fe2O3MgOK2O+Na2O +CaOOther> 93% ... 17-19%<1%<0.5%<4%<1%Leach able Fe2O3 is less ...