To improve the sulfur-removing capacity of Zn-Ti sorbent, new Zn-Ti-based H2S removal sorbents promoted with cobalt and nickel were prepared and tested in a packed bed reactor at middle-temperature conditions (H2(S) absorption at 480 degreesC and regeneration at 580 degreesC). The new sorbents showed excellent sulfur-removing capacities without deactivation even after 15 cycles of absorption and regeneration, whereas the conventional Zn-Ti sorbent continuously deactivated. The nickel and cobalt that permeated the Zn2TiO4 worked not only as active sites during the sulfidation process, but also as a structural stabilizer to prevent a change of physical properties of the sorbents during multi-cycle reactions. Also, the cobalt additive increased the regeneration capacity of the Zn-based sorbents by supplying heat to initiate the regeneration reaction of zinc at lower temperatures while the nickel additive prevented SO2 slippage that originated from the cobalt sulfate.