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Preparation and Applications of Nanohybrids of Layer Structured Silicate with Ceramic Oxides

层状结构硅酸盐与陶瓷氧化物纳米杂化物的制备及应用

基本信息

批准号：
01850179
负责人：
HATTORI Makoto
金额：
$ 4.67万
依托单位：
Hiroshima University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research (B).
财政年份：
1989
资助国家：
日本
起止时间：
1989 至 1990
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01850179/
关键词：
Layered silicate Nanohybrids Intercalation Ceramics Clay Adsorption 層状ケイ塩素インタ-カレ-ション吸着剤

项目摘要

(1) ObjectiveLayer structured crystals consisting of thin crystalline layers with a thickness of molecular scale can serve as ideal host metrices for nanohybrids. In this research project, the silicate interlayers of expandable clays are pillared with various of ceramic oxide particles kinds of nano- to subnanometer scales, and the applications of the characteristic properties of the layered nanohybrids are explored.(2) Resultsi) The silicate interlayers of the clays were pillared with silica sol particles modified with metal cations. The resulting pore sizes formed between the silicate layers can be controllable in the micro-to mesoporous regions by controlling the sol particle sizes used and by using organic template reagents.ii) The adsorption isotherms of various kinds of solvent vapors were measured for the pillared clays. It was revealed that the pillared clays exhibit remarkable hydrophobic properties.iii) The sol pillared clays were dried with CO_2 under a super critical condition. Highly porous structures having well developed card-house structures resulted, which will be used as an effective thermal insulator.iV) Zirconium phoshate was interlayered in the silicate layers of clay. The resulting mixed layer structures showed a strong affinity with hydrogen ions in the ion-exchange.

(1)目的由分子尺度厚度的薄晶层组成的层状结构晶体可以作为纳米杂化材料的理想载体。本课题在可膨胀粘土的硅酸盐夹层中，以纳米至亚纳米尺度的各种陶瓷氧化物颗粒为支柱，探索层状纳米杂化物特征性能的应用。(2)结果(1)粘土的硅酸盐夹层以金属阳离子修饰的硅溶胶颗粒为柱状结构。通过控制所使用的溶胶粒径和使用有机模板试剂，可以在微孔到介孔区域控制硅酸盐层之间形成的孔隙大小。ii)测定了柱状粘土对各种溶剂蒸汽的吸附等温线。结果表明，柱状粘土具有显著的疏水性。iii)在超临界条件下用CO_2干燥土柱状粘土。具有高度多孔结构的卡片屋结构形成，将被用作有效的隔热材料。iV)磷酸锆在粘土的硅酸盐层中呈层间分布。所得到的混合层结构在离子交换中表现出与氢离子的强亲和力。