论文部分内容阅读
研究了ＹＢａ２Ｃｕ３Ｏ６～７超导催化剂上ＣＯ加氢反应，反应主要产物是甲醇和二甲醚。利用原位ＦＴＩＲ、ＸＰＳ和ＸＲＤ技术对催化剂进行了表征。原位ＦＴＩＲ结果表明，反应中间物可能为醛基、甲氧基和甲酸根。ＣＯ吸附到ＹＢａ２Ｃｕ３Ｏ６～７上与晶格氧发生反应生成ＣＯ２，ＹＢａ２Ｃｕ３Ｏ６～７产生氧空位并由Ｏｒｔｈｏｒｈｏｍｂｉｃ相转变为Ｔｅｔｒａｇｏｎａｌ相。
The hydrogenation of CO on YBa2Cu3O6 ~ 7 superconducting catalysts was studied. The main products of the reaction were methanol and dimethyl ether. The catalysts were characterized by in-situ FTIR, XPS and XRD techniques. In situ FTIR results show that the reaction intermediates may be aldehyde, methoxy and formate. CO is adsorbed on YBa2Cu3O6 ~ 7 and reacts with lattice oxygen to generate CO2. YBa2Cu3O6 ~ 7 generates oxygen vacancies and transforms from Orthorhombic phase to Tetragonal phase.