The H2S breakthrough capacity of copper-exchanged Engelhard Titanosilicate-2 (ETS-2) was measured at temperatures up to 950 掳C and it was found that the adsorbent efficiency remains unchanged across the entire temperature range. Below 750 掳C, the adsorption capacity at breakthrough is 0.7 mol of H2S per mole of copper while above 750 掳C the capacity of the adsorbent is halved. The change in H2S capacity is due to Cu2+ reduction by the H2 which is formed through the thermal dissociation of H2S. The adsorbent shows good potential for use over a wide range of operating temperatures in H2S scrubbing processes.