乙酸乙烯合成钯基催化剂及反应机理研究进展

摘要

概述了近年来国内外乙烯气相法合成乙酸乙烯（VAc）钯基催化剂表面结构和表面反应、组分金的作用及VAc合成反应机理的实验及理论研究进展,着重介绍了Pd-Au催化剂及其催化反应的研究。对比分析了不同研究方法得到的共性研究成果及存在的问题。单晶钯基催化剂表面原位反应及表征技术等实验研究结合模型催化剂上分子模拟等理论研究,能够很大程度上克服因催化剂合成难以实现结构的微观可控而导致的无法清晰认识其构效关系的局限,将成为该领域未来研究的主要趋势。%This paper reviews the recent experimental and theoretical advances in the surface structure and reaction of Pd-based catalysts,the role of Au and the reaction mechanism for Vinyl Acetate(VAc) Synthesis,which focuses on the study regarding Pd-Au catalyst.The common conclusion and existing problems through different research methods is analyzed and compared.Experiment methods,such as in-suit reaction and characterization technique,on Pd-based single crystal models combined with the theoretical calculation,such as molecular simulation on model catalysts,give a clear understanding of the structure-activity relationship,thus the limitations to synthesize microstructure-controllable catalysts can be overcome,which will also be the main focus of future research in this area.