铜锌催化剂的活性及对甲醇吸附的研究

STUDY ON Cu-ZnO/SiO_2 CATALYST ACTIVITY AND ADSORPTION FOR METHANOL

以二氧化硅为载体的浸渍型铜锌催化剂对甲醇脱氢具有较高的活性和选择性。ZnO 的加入能降低 CuO 的还原温度,同时对甲醇的吸附量增加,提高了催化剂的选择性。实验表明,催化剂的活性位是零价铜,ZnO 只起助催化剂的作用。

Cu-ZnO/SiO_2 Catalyst prepared by impregnation method possess the higher activi- ty and selectivity.ZnO can fall temperature of reduction CuO and increase adsorption quantity for methanol and suppress side reaction.The experimental results prove that the catalyst is zero valence copper and ZnO is promoter.