硅氧金属催化剂的合成、结构和新催化反应研究

项目名称： 硅氧金属催化剂的合成、结构和新催化反应研究

项目编号： No.21473142

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 数理科学和化学

项目作者： 朱红平

作者单位： 厦门大学

项目金额： 82万元

中文摘要： 硅氧金属催化剂是一类重要的催化剂，其在工业方面的广泛应用由其反应活性和稳定性决定。催化剂的稳定性取决于金属与表面硅氧基的化学键联，催化活性则与其结构明确关联。催化剂表面的复杂性使得起作用的金属活性位的结构不明确。研究设计结构明确的活性位，建立结构和性能的关联，是催化基础研究的一个重要方向。在催化剂的合成研究中，通过表面硅羟基的化学作用可以有效地负载金属催化剂，通过有机硅醇分子则形成结构明确的硅氧金属化合物。这两者都是形成稳定的硅氧金属化学键。后者为前者的研究奠定结构基础；然而发掘后者的独特的均相催化性能，探索新催化反应，则是更重要的研究动力。因此，本项目将设计合成新型氢基硅醇分子，构建一类结构明确的氢基硅氧金属催化剂，研究其新催化反应，明晰构-效关联，揭示其催化作用的本质。

中文关键词： 硅醇和氢基硅醇；硅氧金属化合物；结构；催化剂；新催化反应

英文摘要： The silicon-oxygen-metal catalyst is one of the most important catalysts. This catalyst has a wide application in industry depending on its activity and stability, during the catalytic reactions, that is built on the basis of the chemical bonding between the active metal center and the silicon oxide support on the surface as well as of the structures formed. However, the complicated nature of the solid support surface often makes hard to understand the clear structures of the catalysts. The studies on the catalytically active sites with definite structures are the key point, which help to understand the relationship between the structure and the property. The effective metal-supported catalysts can be formed by reaction of the metal-containing species with the silanols despersed on the silica surface while the metallosiloxanes be achived from the organosilanols precursor, both of which contain the stable metal-silicon oxide bonds. The later provides the definite structures that help to infer those of the former ones. However, it is very impotant for the later to develop its unique catalytic property, especially in homogeneous reactions. Herein, we will focus on the synthesis of the new hydridosilanol molecules and their metal complexes used as catalysts for the new catalytic reactions in this program. This study will make clear the relationship between the structure and the property of these catalysts, which would show the nature of the catalytic reactins.

英文关键词： organosilanol and hydridosilanol;organosilanol-based metal complexes;structure;catalyst;new catalytic reaction