Chemistry Research Group: Access in Nanoporous Layered Materials

化学研究小组：进入纳米多孔层状材料

• 批准号: 9224102
• 负责人: Thomas Pinnavaia
• 金额: $ 168.33万
• 依托单位: Michigan State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-08-01 至 1997-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9224102&HistoricalAwards=false
• 关键词: Chemistry; Research; Group; Access; Nanoporous

9224102 Pinnavaia This group award is made in the Advanced Materials and Processing Program in support of the collaborative research of Professors Pannavaia, Kanatzidis, Golding, Mahanti and Thorpe at Michigan State University. Support is provided by the Chemistry Division. One major theme of the research is access in nanoporous layered materials. Specific elements of the research will be control of pore size, structural modification of the layers by pillaring intercalants, and a study of structural and dynamical factors which govern access in micro- and mesoporous systems. A full complement of synthetic, characterization and theoretical approaches will be employed. Typical systems which will be studied are smectite clays, layered double hydroxides and nanoporous metal chalcogenides. A second major theme is the design, synthesis and characterization of layered silicate and silicic acid heterostructures. Layered silicates will be synthesized in which two ions of different solvation energies are segregated into regularly alternating galleries by spontaneous self-assembly. These ordered heterostructures containing hydrophobic alkyl onium ions and hydrophilic inorganic cations will be well suited for acid catalysis and guest-host chemistry. Another class of materials which will be synthesized and characterized are layered silicic acid derivatives formed by templated intragallery hydrolysis-condensation reactions of chiral silicates in the presence of liquid amines. The nature of the amine will determine the pore structure and size. These chiral materials will be suitable as catalysts for asymmetric synthesis and for separation of optical isomers. %%% Nanoporous layered materials are of high technological interest in catalysis and separations and are potentially important in electronic, optical and structural applications. ***

9224102皮纳瓦亚这个团体奖是在先进材料和加工计划中颁发的，以支持密歇根州立大学的帕纳瓦亚、卡纳齐迪斯、戈尔丁、马汉蒂和索普教授的合作研究。由化学司提供支助。这项研究的一个主要主题是在纳米孔层状材料中访问。这项研究的具体内容将是控制孔大小，通过柱状插层剂对层进行结构修饰，以及研究控制微孔和介孔系统访问的结构和动力学因素。将采用完整的合成、表征和理论方法。将要研究的典型体系是蒙皂石粘土、层状双氢氧化物和纳米多孔金属硫化物。第二个主要主题是层状硅酸盐和硅酸异质结构的设计、合成和表征。层状硅酸盐将被合成，其中两个不同溶剂化能的离子通过自发自组装被分离到规则交替的走廊中。这些含有疏水性烷基阴离子和亲水性无机阳离子的有序异质结构将非常适合于酸催化和客体化学。另一类将被合成和表征的材料是层状硅酸衍生物，它是由手性硅酸盐在液态胺存在下的模板化走廊内水解-缩合反应形成的。胺的性质将决定孔结构和大小。这些手性材料将适合作为不对称合成和光学异构体分离的催化剂。纳米多孔层状材料在催化和分离方面具有很高的技术价值，在电子、光学和结构应用方面具有潜在的重要意义。***