XRD, BET and N 2O titration results confirmed that nickel additive could increase the dispersity of active Cu 0 species during the catalytic process and maintain the stability during the reaction.

• XRD ；BET和N2 O滴定实验结果表明 ；Ni助剂可能是通过提高Cu0 活性物种的分散度并维持Cu0 活性物种在催化反应过程中的稳定性而使Cu/Zn/Ni催化剂的活性及稳定性大幅度提高 .