Preparation and Characterization of Cu/Al2O3/ZnO(0001)-Zn and Cr2O3/ZnO(0001)-Zn Model Catalysts

Abstract

催化剂的表面组成和结构(几何结构和电子结构)对其催化性能有显著影响。但真实多相催化体系比较复杂,很多表面灵敏表征手段无法直接应用。因此构筑结构明确均一的模型催化剂体系是深刻理解催化剂活性中心本质和催化反应机理的一种重要方法。 铜基催化剂(Cu/Al2O3/ZnO)是甲醇合成反应的工业催化剂,但目前对于该反应的活性位及机理的争论还比较多,而且大量研究主要集中在Cu/ZnO二元组分间的相互作用,缺乏对Al2O3的深入认识。本论文工作分别构筑了Cu/ZnO(0001)-Zn,Al2O3/ZnO(0001)-Zn,Cu/Al2O3/ZnO(0001)-Zn,Cu/Al2O3/ZnO(0001)-Zn...The surface composition and structure of the catalyst (geometric structure and electronic structure) has a significant influence on the catalytic performance. However, the heterogeneous catalytic system is complex, making it difficult to be characreized. Therefore, using well-defined model catalyst can establish a more reliable structure-catalytic performance relationship and offer a better way to...学位:理学硕士院系专业:化学化工学院_物理化学学号:2052014115159

    Similar works