Preparation and characterization of 3-dimensionally ordered macroporous SiC

Three-dimensionally (3D) long range ordered macroporous SiC ceramics were prepared through infiltrating polymethylsilane (PMS) into the 3D ordered sacrificial silica template, pyrolysis and the template removal. It was found that the pore size (84-658 nm), BET surface area (299.44-584.64 m2/g) and micropore volume (0.25-0.64 cm3/g) of the achieved porous SiC can be tailored by utilizing different sizes silica sphere templates. There exist three kinds of pores in the porous ceramics: sphere inversed pores, windows and mesopores (2-5 nm). The sphere inversed pores were packed as hcp structure and three dimensionally penetrated through the windows, and the mesopores endowed the porous ceramics surprising high BET surface areas and micropore volumes.

作 者： WANG Hao LI Xiaodong YU Fu-cheng KIM Dong-pyo   作者單位： WANG Hao,LI Xiaodong(CFC Key Lab of National University of Defense Technology, Changsha 410073, China)

YU Fu-cheng,KIM Dong-pyo(Department of Fine Chemical Engineering and Chemistry of Chungnam National University, Taejon 305-764, South Korea) 

刊 名： 中國科學(xué)E輯（英文版）  SCI 英文刊名： SCIENCE IN CHINA SERIES E:TECHNOLOGICAL SCIENCES  年，卷(期)： 2006 49(1)  分類號(hào)： O6  關(guān)鍵詞： three-dimensionally ordered materials   templated technique   preceramic polymer conversion technique   SiC ceramic  

【Preparation and characterization of 】相關(guān)文章：

Preparation and Characterization of Refuse Derived Fuel for Pyrolysis and Gasification by Bindless High Pressure Briquet04-26

Preparation and characterization of mixed hydroxy-Fe-Al pillared montmorillonite with large basal spacing04-26

Isolation and characterization of deodorizing bacteria for organic sulfide malodor04-25

Characterization of fine organic particulate matter from Chinese cooking04-26

Isolation and Characterization of Microorganisms for Degradation of Minimal Oils and Fats at Low Temperatures04-27

Preparation of TiO2-activated carbon complex membranes and their photoelectrocatalytic activity04-27

Characterization and Genetic Analysis of a Novel Mutant mst of Rice Defective in Flower Development04-26

Colony development and physiological characterization of the edible blue-green alga, Nostoc sphaeroides (Nostocaceae, Cy04-26

Preparation and mechanism of Fe3O4/Au core/shell super-paramagnetic microspheres04-26

Characterization of Phenol Biodegradation by Comamonas testosteroni ZD4-1 and Pseudomonas aeruginosa ZD4-304-27