原位红外光谱研究Cu/Zn/Al催化剂的还原过程

In situ FT-IR studies on the reduction process of CuO/ZnO/Al_2O_3 catalyst

采用原位红外技术 ,研究了用Na2 CO3 沉淀法制备的Cu/Zn/Al催化剂的程序升温还原过程。结果表明 ,在催化剂的程序升温还原过程中 ,CuO和ZnO表面吸附的CO2 可进行加氢反应和逆水汽变换反应。在催化剂中 ,ZnO与CuO、Al2 O3 均发生相互作用。Al2 O3 对CuO和ZnO具有分散作用。提出了Cu/Zn/Al催化剂在还原过程中的反应机理。

In situ infrared spectroscopy was used to study the reduction process of Cu/Zn/Al catalyst. The results revealed that the reactions of hydrogenation and RWGS of CO 2 proceeded on the surface of both CuO and ZnO. ZnO had an interaction with Al 2O 3 . Al 2O 3 contributed to disperse CuO and ZnO. The reaction mechanism of reduction process on Cu/Zn/Al catalyst was also proposed. [WT5”HZ]