摘要
催化表面物理化学主要是研究多相催化反应体系催化剂的表面结构-催化性能关系和催化反应机理从而获得原子分子水平上的理解,为催化剂的改进和设计提供指导.真实催化剂的结构复杂性和不均一性使得无法明确关联其结构和催化性能,因此构筑结构均一的模型催化剂体系是进行催化表面物理化学研究的常用方法.本文介绍了本研究组在催化表面物理化学模型体系研究中的研究理念,综述了近5年来取得的研究进展.我们将模型催化剂的概念从传统的基于单晶/单晶薄膜的模型催化剂拓展到基于纳米晶的模型催化剂,由简单到复杂,在不同层次构筑模型催化剂,开展催化表面物理化学研究.这种研究理念有可能实现在原子分子水平理解真实催化反应条件下的催化剂结构-催化性能关系和催化反应机理.
Surface physical chemistry studies of catalysts aim to understand the surface structure-activity relation and the reaction mechanism of heterogeneous catalytic reaction at the molecular level for the improvement and design of efficient catalysts. It is difficult to unambiguously correlate the catalytic activity with the structure for powder catalyst because of its structural complexity and un-uniformity. Therefore, model catalysts with uniform and well-defined structures have been always employed for the surface physical chemistry studies of catalysts. In this paper, I review the research concept and the recent progress that has been achieved in surface physical chemistry studies of model systems for heterogeneous catalysis in my research group. We have innovated model catalysts from the traditional single crystals/single crys~：al thin films to nanocrystals with unitbrm and well-defined structures for the surface physical chemistry studies for targeted heterogeneous catalytic system. Our research concept might achieve the fundamental understanding of the surface structure-activity relation and the reaction mechanism of the practical heterogeneous catalytic reaction at the molecular level.
出处
《中国科学：化学》
CSCD
北大核心
2012年第4期469-479,共11页
SCIENTIA SINICA Chimica
基金
国家自然科学基金(20503027
20773113
20973161
21173204)
中国科学院
教育部创新团队(IRT0756)
中国科学技术大学
中国科学院-德国马普学会伙伴小组对本项目的资助
关键词
催化表面物理化学
构-效关系
催化反应机理
模型体系
单晶
纳米晶
surface physical chemistry, structure-activity relation, catalytic reaction mechanism, model systems, singlecrystals, nano-crystals
