层状硅酸盐的固相转晶成孔机理研究

项目名称： 层状硅酸盐的固相转晶成孔机理研究

项目编号： No.21271037

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 孟长功

作者单位： 大连理工大学

项目金额： 80万元

中文摘要： 多孔材料因其独特的结构和性能在诸多领域有着广泛的应用，其合成机理研究对绿色、高效合成路线的探索和应用具有重要指导意义。以层状硅酸盐为原料经固相转晶合成无机多孔材料具有价格低廉、废液量少、产品收率高等特点，产业化应用前景广阔。本项目以高分辨X射线衍射数据为依据，采用原子对分布函数分析方法，结合傅里叶变换红外光谱和固体核磁共振等表征手段，考察多孔材料晶化过程中存在的中间态的局部结构及其在晶化成孔过程中的变化情况，建立自硅酸盐二维层状至三维多孔结构的演变模型，阐释以层状硅酸盐为原料合成多孔材料的固相转晶成孔机理，并在此基础上建立多孔材料固相转晶机理的研究方法和理论，从而指导多孔材料的高效、绿色合成。这一工作具有重要的科学意义和应用价值。

中文关键词： 硅酸盐矿物；多孔材料；机理；；

英文摘要： Porous materials have attracted great interest in material and chemistry field because of their unique structure and properties.To exploit green and efficient routes and novel applications for porous materials, it is constructive to understand formation mechanism of the porous materials. The porous materials are synthesized by solid state transformation from cheap layered silicates, which little waste water is produced and products are obtaied with high yield. The process is considered to be one commercialization way in the future. This project will investigate local structures of intermediates and pore-formation under crystallization by combining high resolution X-ray diffraction, Fourier transform infrared spectroscopy, solid state nuclear magnetic resonance, and density functional theory. Based on the above mentioned results, evolution model will be built from two-dimention to three-dimention of silicates, and solid-state transformation mechanism will be elaborated from silicates to porous materials. The findings will promote to establish the research methods and theories on solid-state crystallization of porous materials, and to guide efficient and green synthesis of porous materials. The above-mentioned proposal has important scientific significance and application value for synthesis of porous materials

英文关键词： Silicates；Porous materials；Formation mechanism；；