亚氨基二乙酸衍生物及其金属有机凝胶的制备和性能研究

发布时间：2018-01-12 02:14

  本文关键词：亚氨基二乙酸衍生物及其金属有机凝胶的制备和性能研究　出处：《扬州大学》2016年硕士论文　论文类型：学位论文

  更多相关文章： 亚氨基二乙酸 配合物 金属有机凝胶 三维网络结构 多孔材料 气体吸附

【摘要】：金属-有机凝胶(Metal-Organic Gel, MOG)是指金属原子和有机配体通过配位作用形成的具有三维网络结构的半固体状物质,同时在凝胶中还存在一些非共价键的相互作用,例如氢键,范德华力,π-π：堆积等。与金属-有机框架(Metal-Organic Framework, MOF)相比,金属有机凝胶的结晶性较差,而且结构不明确,但是它仍然存在MOF没有的一些优点,例如：(1)得到金属有机凝胶的反应温度较低,甚至有一部分凝胶在室温下就能生成；(2)反应时间短,反应所需要的溶剂量少；(3)反应溶剂廉价易得,大多数的反应都是以乙醇,水,N,N.-二甲基甲酰胺(DMF)或者他们的混合物为溶剂,毒性小；(4)可以利用不同形状的反应容器得到不同形状的凝胶,这使得它在工业上和商业上有更加广泛的用途。同时,配体和金属离子的相互作用,多齿有机配体的定向作用都使得金属有机凝胶在催化、传感、阴阳离子识别、荧光、气体吸附与分离、电化学等方面有着潜在的应用价值。本文主要合成了三种亚氨基二乙酸(Iminodiacetic Acid, IDA)衍生物的配体,分别用三种配体与Cr3+, Al3+, Fe3+, Zr4+反应得到五组不同的具有三维网络结构的金属有机凝胶,测定了它们的多孔性质,并探讨了它们在气体吸附方面的应用。1、利用半刚性配体BP-IDA,分别与Cr(Ⅲ)盐,Al(Ⅲ)盐进行溶剂热反应,得到了两种新颖的金属有机凝胶。通过流变、扫描电子显微镜、粉末X射线衍射、红外光谱、X射线光电子能谱、氮气吸脱附等测试对凝胶材料的结构和物理性质进行了详细研究。2、利用半刚性配体BP-IDA与Fe(Ⅲ)盐在室温下反应,得到了一种新颖的金属有机凝胶。这种Fe凝胶在一定条件下可以进行溶胶一凝胶的相互转换,将该凝胶材料高温活化,活化后的多孔碳材料具备潜在的电化学性能。通过流变、扫描电子显微镜、粉末X射线衍射、红外光谱、氮气吸脱附等测试对材料的结构和物理性质进行了详细研究。3、利用半刚性配体TPB-IDA和TPM-IDA分别与Zr(Ⅳ)盐进行溶剂热反应,得到了两种新颖的金属有机凝胶。通过流变、扫描电子显微镜、粉末X射线衍射、红外光谱、X射线光电子能谱、氮气吸脱附等测试对凝胶材料的结构和物理性质进行了详细研究。
[Abstract]:Metal-Organic Gel (MOG) is a semisolid substance with three-dimensional network structure formed by the coordination of metal atoms and organic ligands. At the same time, there are some non-covalent bond interactions in the gel, such as hydrogen bond, van der Waals force. 蟺-蟺: stacking. Compared with Metal-Organic Framework (MOFF), organometallic gels have poor crystallinity and unclear structure. However, there are still some advantages that MOF does not have. For example, the reaction temperature of organometallic gels is relatively low, and even some of them can be formed at room temperature. (2) the reaction time is short and the amount of solvent needed for the reaction is less; The reaction solvent is cheap and easily available, and most of the reactions are in the solvent of ethanol, water, N-dimethylformamide (DMF) or their mixture, with little toxicity; Different shapes of gels can be obtained by using different shapes of reaction vessels, which makes them more widely used for industrial and commercial applications. At the same time, ligands interact with metal ions. The orientation of polydentate organic ligands makes organometallic gels in catalysis, sensing, anion recognition, fluorescence, gas adsorption and separation. In this paper, three ligands of iminodiacetic acid (IDA) derivatives were synthesized. Five different groups of organometallic gels with three-dimensional network structure were obtained by the reaction of three ligands with Cr3, Al3, Fe3 and Zr4, and their porous properties were measured. Their application in gas adsorption was also discussed. The semi-rigid ligand BP-IDA was used for solvothermal reaction with Cr (鈪，

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