Properties of CuO sorbents related to SO/sub 2/ reactivity

Copper oxide is a promising sorbent for combined flue-gas-cleaning processes because it is one of the most reactive metal oxides for the sorption of SO/sub 2/ from synthetic flue gas. In addition, CuSO/sub 4/ catalyzes the reduction of nitrogen oxides by ammonia. Preparation and regeneration schemes for unsupported CuO have been investigated to optimize the reactivity of the sorbent material. Sorbent effectiveness for flue gas desulfurization is discussed in relation to physical properties of the CuO powders.