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采用醇盐法制备了超细ＣｕＯ－ＺｎＯ－ＳｉＯ２催化剂，进行了ＣＯ２加氢反应和透射电镜测试，同时以超细ＣｕＯ－ＳｉＯ２为对比，分别进行了ＸＲＤ、ＴＰＲ研究。对于ＣＯ２加氢反应，ＣｕＯ－ＳｉＯ２催化剂在加入ＺｎＯ组份后催化活性显著提高。ＴＥＭ测试表明ＣｕＯ－ＺｎＯ－ＳｉＯ２催化剂前体在４００℃及６００℃焙烧后平均粒径分别为２８ｎｍ和３４ｎｍ。ＸＲＤ测试表明在ＣｕＯ－ＳｉＯ２体系中存在ＣｕＯ晶相，但更接近于无定形或微晶状态；而在ＣｕＯ－ＺｎＯ－ＳｉＯ２体系中，则存在ＣｕＯ晶相和ＺｎＯ晶相。ＴＰＲ研究表明，ＣｕＯ与ＺｎＯ之间存在相互作用，随ＺｎＯ含量增加，ＣｕＯ还原峰向高温移动。ＺｎＯ对ＣｕＯ还原最大峰温的影响取决于ＺｎＯ加入相对量的变化，即ＺｎＯ／ＣｕＯ（ｍａｓｓ％）比值。
The ultrafine CuO-ZnO-SiO2 catalyst was prepared by alkoxide method. The hydrogenation reaction of CO2 and transmission electron microscopy were carried out. At the same time, the ultrafine CuO-SiO2 was used as a contrast to carry out the XRD and TPR studies respectively. For the CO2 hydrogenation reaction, the catalytic activity of CuO-SiO2 catalyst increased significantly after adding ZnO component. TEM test showed that the average particle size of CuO-ZnO-SiO2 catalyst precursor after calcination at 400 ℃ and 600 ℃ were 28nm and 34nm, respectively. XRD results show that there is a CuO crystal phase in the CuO-SiO2 system, but it is closer to the amorphous or microcrystalline state. In the CuO-ZnO-SiO2 system, the CuO crystal phase and the ZnO crystal phase exist. TPR study showed that there is interaction between CuO and ZnO, with increasing ZnO content, CuO reduction peak to high temperature. The effect of ZnO on the maximum peak temperature of CuO reduction depends on the relative amount of ZnO added, ie the ratio of ZnO / CuO (mass%).