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新型金屬@MOFs核-殼結構材料的可控制備及多相催化性能研究

批準號21501003 學科分類功能配合物化學 ( B010503 )
項目負責人柯飛 負責人職稱講師 依托單位安徽農業大學
資助金額20.00
萬元
項目類別青年科學基金項目 研究期限2016 年 01 月 01 日 至
2018 年 12 月 31 日
中文主題詞金屬-有機骨架;多孔材料;核-殼結構;可控合成;催化性能
英文主題詞Metal-organic frameworks;porous materials;core-shell structure;controllable synthesis ;catalytic properties

摘要

中文摘要 金屬-有機骨架材料由過渡金屬離子和多官能團有機配體通過配位鍵自組裝而成,是近年來得到快速發展的一類多孔晶體材料。目前,關于金屬-有機骨架負載無機納米顆粒復合催化劑的研究報道很多,但基于金屬-有機骨架核-殼結構催化劑的報道較少。本項目擬采用分子設計思想和后合成改性策略,探索一類基于金屬-有機骨架的新型核-殼結構多孔催化材料的可控制備,以獲得具有協同催化和循環使用功能的多孔催化材料體系,并將其應用于多種有機催化反應;系統考察核-殼催化劑的合成條件和催化性能;通過大量的合成與性能測試,總結出協同催化機理,闡明核-殼結構中金屬-有機骨架的殼層厚度、孔洞形狀與尺寸以及金屬納米顆粒核的尺寸等與其催化性能間的內在聯系等科學問題,為新型核-殼多孔功能材料和高效多相催化材料的開發打下堅實的實驗和理論基礎。
英文摘要 Metal-organic frameworks (MOFs) synthesized by assembling transition metal ions with organic ligands have recently emerged as a new class of porous crystalline materials. Recently, there have been a few pioneering studies on the MOFs supported metal nanoparticles or bimetallic alloy nanoparticles for heterogeneous catalysis. By contrast, researches on MOF-based core–shell catalysts with functional nanoparticles as core and MOFs as shell have not been popular to date. In this proposal, a novel type of porous core-shell heterostructures MOF-based materials with tailorable structures, designable functions, and tunable cavities, as well as general preparative methods for designing and fabricating this type of core-shell material, are proposed. Furthermore, we hope to demonstrate the rational design of novel core-shell reusable catalysts with synergistically enhanced catalytic performance by using the molecular design method and post-synthetic strategy. After applying the as-synthesized core-shell catalysts in various organic reaction systems, we expect to clarify the exact catalytic mechanism, with the intention of illustrating the relationship between the catalytic properties and thickness of the MOFs shell, pore size and shape, and the size of metal nanoparticles core. It is highly expected that this proposal research will provide useful information for designing and constructing new classes of functionalized core-shell porous materials and high performance heterogeneous catalysts.
結題摘要

成果

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