Reduction of CuO-containing catalysts: CuO/Cox/ZnO

Cu²⁺ in CuO/ZnO reduces more extensively and rapidly than Co²⁺ in CoO_x/ZnO in the presence of CO or H₂. XRD, TPR and thermal analysis of the combined CuO–CoO_x/ZnO catalysts prepared by precipitation suggests that the component CuO and promoter CoO_x phases are in intimate contact. The addition of Co²⁺ to CuO/ZnO catalystsdecreases the reducibility of the Cu²⁺ by CO and this is relevant to Cu–Co catalysts for ethanol synthesis.

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Cu²⁺ CO H₂ CuO/ZnO, Co²⁺ CoO_x/ZnO. , CuO–CoO_x/ZnO, , CuO CoO_x. Co²⁺ CuO/ZnO Cu²⁺ CO Cu–Co .