“…Effective Cu-based catalysts have been used for CO 2 hydrogenation, such as modified industrial Cu/ZnO/Al 2 O 3 [1,2], Cu/ZnO/M (M= Zr [3][4][5], Ce [6,7], Ti [8][9][10], Ga [11][12][13], Nb [14], and others [15,16]), and Pd-Cu [17,18], but mainly C 1 compounds (CO, CH 4 , and methanol) are reported as products. Such an approach has already been applied for methanol synthesis on a large scale.…”