研究了ＹＢａＣｕ３Ｏ６～７超导催化剂上ＣＯ２的加氢制醇反应。考察了温度、压力和空速等条件对催化剂反应性能的影响。反应的主要产物是甲醇、ＣＯ和少量甲醚。利用ＸＰＳ、ＸＲＤ和ＡＦＭ等技术对催化剂的结构、铜的存在状态和反应活性位进行表征发现，在反应过程中，ＹＢａ２Ｃｕ３Ｏ６～７由ｏｒｔｈｏｍｂｉｃ相转变为ｔｅｔｒａｇｏｎａｌ相。反应活性位可能是Ｃｕ（Ｉ）物种。反应后催化剂颗粒的分散程度明显提高 The hydrogenation of CO2 on YBaCu3O6 ~ 7 superconducting catalysts was studied. The effects of temperature, pressure and space velocity on the catalytic performance of the catalysts were investigated. The main products of the reaction are methanol, CO and a small amount of methyl ether. XPS, XRD and AFM techniques were used to characterize the structure of the catalyst, the presence of copper and the reactive sites. It was found that during the reaction, YBa2Cu3O6 ~ 7 changed from orthombic phase to tetragonal phase. Reactive sites may be Cu (I) species. The degree of dispersion of the catalyst particles is significantly increased after the reaction