Development of functional materials by using metal naphtenes as astarting compound

以环烷酸金属盐为起始化合物的水热反应，可制得具有独特颗粒形态的过渡金属氧化物。以环烷酸铁和LiOH3为原料，通过无模板法水热反应成功地合成了中空磁铁矿(Fe3O4)球。以水热法制备的氢氧化钴为原料，在300~800℃的空气中进行不同温度的焙烧，得到了不同尺寸的LiCoO2颗粒。以制备的Co(OH)2纳米片为前驱体，采用水热法制备了尺寸为100 nm~1 mm的六方钴氧化物(Co3O4)纳米环，其晶型为立方晶系。根据随时间变化的实验结果，提出了六方Co3O4纳米环形成的可能机制。以酚醛树脂或呋喃树脂为原料，掺入钴或环烷酸镍制备金属分散多孔炭。由酚醛树脂或呋喃树脂与环烷酸钴或环烷酸镍制备的多孔炭的比表面积约为。400m2/g。

Hydrothermal reaction by using metal-naphthenates as one of the starting compounds could producetransition metal oxides with unique particle morphology as follows. Hollow magnetite (Fe3O4) sphereswere synthesized successfully via a template-free hydrothermal reaction using Fe-naphthenate and LiOHas the starting compounds. The starting material, -Co(OH)2 prepared by hydrothermal reaction wascalcinated at different temperatures from 300 to 800°C in air and LiCoO2 particles with various sizeswere obtained. Hexagonal cobalt oxide (Co3O4) nanorings over a size range from 100 nm to 1 mmconsisting of cubic nanocrystals were obtained via a hydrothermal method using as-prepared -Co(OH)2nanosheets as the precursors. A probable mechanism of formation of the hexagonal Co3O4 nanorings isproposed on the basis of time-dependent experimental results. Metal-dispersed porous carbon wasprepared from phenolic or furan resin mixed with Co or Ni naphthenate. The porous carbons preparedfrom phenolic or furan resin with Co or Ni naphthenate have specific surface area of approx. 400m2/g.