Promotional effect of Partial substitution of Zn by Ce in CuZnAlO catalysts used for hydrogen production via steam reforming of dimethyl ether

► Substitution of Zn by Ce can improve the DME SR performance of CuZnAlO catalyst. ► The optimal content of CeO2 in substituted CuZnAlCeO catalysts is 10% by weight. ► The presence of CeO2 can enhance the dispersion and reducibility of Cu species. ► The catalyst with more Cu+ species shows higher capability for CO chemisorption.