金属有机骨架多功能催化剂的制备及其在化学固定二氧化碳中的应用

Metal-Organic Frameworks (MOFs) represent a new class of hybrid organic-inorganic surpramolecular materials comprised of ordered networks formed from organic bridging ligands and inorganic metal cations. MOFs have exhibited the highest known surface areas, the lowest crystal densities as well as tunable pore size and functionality, which make it an attractive application prospect in catalysis, however, the catalytic effect of MOFs material is single. In terms of green chemistry, the synthesis of stable MOFs materials as multifunctional catalyst have a wide application prospect. In order to catalyze the chemistry fixation of carbon dioxide, MOFs based Lewis acid/base multifunctional catalyst are to synthesize in the basis of existing MOFs material with a free amino group, which are used to catalyze the carbon dioxide converting to cyclic carbonate. And the MOFs based metal/base multifunctional catalyst are to synthesize in order to catalyze the carbon dioxide converting to formic acid. Based on the characterization and reaction results, the design and synthesis of highly efficient and stable multifunctional catalyst is to explore. Through the research, to discover or invent new catalysts and catalytic processes, to provides for the synthesis of new methods and techniques, and reveal the mechanism of multifunctional catalyst.

金属有机骨架(MOFs)代表了一类新兴的有机无机杂化材料，通过有机桥联配体和无机金属离子的结合构成的有序网络结构。目前已经呈现出最高的比表面积，最低的晶体密度以及可调节的孔尺寸和功能结构，使MOFs在催化方面具有诱人的应用前景。但是目前MOFs材料的催化作用比较单一。从绿色化学的角度出发，合成稳定的多功能催化作用的MOFs材料具有广泛的应用前景。化学固定二氧化碳的绿色反应为模型反应，以具有自由氨基的MOFs材料为基础，进一步针对性地制备MOFs的酸/碱多功能催化剂，催化二氧化碳转化为环状碳酸酯的反应。以及合成MOFs的金属/碱多功能催化剂，催化还原二氧化碳转化为甲酸的反应。将催化剂的表征和反应结果的关联，探索设计和合成高效稳定的多功能催化剂，通过研究力图发现或发明新的催化剂和催化过程。提供新的合成方法和技术，并揭示出多功能催化剂作用的机理。