高等学校化学学报

高等学校化学学报

• 研究论文 • 上一篇    下一篇

三维有序SiC空心球的制备及表征

王浩1, 李效东1, 肖加余1, 金东杓2   

  1. 1. 国防科学技术大学CFC重点实验室, 长沙 410073;
    2. 忠南大学精细化工与化学工程系, 韩国大田 305-764
  • 收稿日期:2005-06-27 修回日期:1900-01-01 出版日期:2006-06-10 发布日期:2006-06-10
  • 通讯作者: 王浩

Preparation and Characterization of Threedimensionally Ordered SiC Hollow Spheres

WANG Hao1*, LI Xiao-Dong1, XIAO Jia-Yu1, KIM Dong-Pyo2   

  1. 1. CFC Key Lab of National University of Defense Technology, Changsha, China, 410073;
    2. Department of Fine Chemical Engineering and Chemistry, Chungnam National University, Taejon, 305-764 South Korea
  • Received:2005-06-27 Revised:1900-01-01 Online:2006-06-10 Published:2006-06-10
  • Contact: WANG Hao

PDF (PC)

被引次数

7

摘要： 以三维有序多孔碳为模板, 以聚甲基硅烷(PMS)为前驱体, 经过前驱体的渗入、交联和陶瓷转化以及多孔碳模板的烧除, 制备了长程三维有序SiC空心球. 所制备的SiC空心球的外径(135-896 nm)、 球壳厚度(14-79 nm)、 BET比表面积(50.8～5.0 m2/g)及微孔体积(0.265～0.038 cm3/g)受不同孔径的多孔碳模板(150-1 000 nm)或不同前驱体浓度的控制. 所制备的SiC空心球以hcp结构排列成长程三维有序的序列.

关键词: 三维有序, SiC空心球序列, 陶瓷前驱体转化技术, SiC陶瓷

Abstract: Three-dimensionally long range ordered SiC hollow spheres were prepared for the first time by infiltrating polymethylsilane(PMS) into three-dimensionally ordered sacrificial porous carbon templates produced from the ordered silica spheres as the original templates, curing and pyrolysis of PMS, and the removal of the porous carbon templates. It was found that the outer diameter(135-896 nm), the wall thickness(14-79 nm), BET specific surface area(50.8-5.0 m2/g) and micropore volume(0.265-0.038 cm3/g) of the achieved SiC hollow spheres can be tailored by utilizing carbon templates with different pore sizes or PMS solutions with different concentrations. In addition, the produced SiC hollow spheres were packed as a hcp structure to be a long range ordered assembly.

Key words: Three-dimensionally ordered material, Hollow sphere, Preceramic polymer conversion technique, SiC ceramic

中图分类号: 

TrendMD: