Spherical cobalt-molybdenum (CoMo) on activated alumina catalyst for use in Claus tail gas treating units that contain a hydrogenation/hydrolysis reactor (e.g. SCOT or LT-SCOT tail gas units). Designed for use in tail gas units with a reactor inlet temperature of at least 200 °C / 400 °F (low temperature units), but may also be used successfully in conventional tail gas units with reactors operated at higher temperature. Maxcel TGS-02 can be treated with actiCAT® TG presulfurization or UltraCAT® TG preactivation for simple and fast tail gas unit startup.