The preparation of CuM/SiO2 (M=Bi, Mg, Mn) catalysts applied in ethynylation of formaldehyde for 1,4‑butynediol synthesis: the positive interface effect of CuO and Bi2O3

The ethynylation of formaldehyde catalyzed by Cu-based catalysts is an important synthesis method for 1,4-butynediol relating to high-value-added chemicals. In this work, a series of CuM/SiO