PURPOSE: To increase the specific surface area of a carrier for a catalyst and to improve the strength by using specified amts. of calcium aluminate, molten silica, hydraulic alumina and LiO2.Al2O3.XSiO2 each having a specified particle size to form the carrier.

CONSTITUTION: 20W40wt.% calcium aluminate is mixed with 40W70wt.% molten silica, 5W20wt.% hydraulic alumina or activated alumina and 1W10wt.% Li2 O.Al2O3.XSiO2 (X=2 or 4). The mixture is kneaded with a prescribed amt. of water, molded, dried and heat treated to form a heat resistant carrier for a catalyst. The pref. average particle size of the calcium aluminate is 5W30μm, that of the molten silica is 5W50μm, that of the hydraulic alumina or activated alumina is 1W10μm and that of the Li2O.Al2O3.XSiO2 is 1W10μm.