由柏木制备纳米孔结构炭材料Ⅰ.制备与孔结构

新型炭材料, 2007, 22(3): 199-205.

由柏木制备纳米孔结构炭材料Ⅰ.制备与孔结构

^1, , ^2, , ^3, , ^4, , ^5, , ^6, , ^7,

1.Faculty of Engineering, Aichi Institute of Technology, Yakusa , Toyota 470-0392, Japan;Intellectual Property Bank Corp. , Toranomon, Minato-ku, Tokyo 105-0001, Japan

2.Intellectual Property Bank Corp. , Toranomon, Minato-ku, Tokyo 105-0001, Japan

3.Faculty of Engineering, Oita University, Dannoharu 700, Oita 870-1192, Japan;Shimizu Corp. , Environ. Solution Div. , Shibaura, Minato-ku, Tokyo 105-8007, Japan

4.Shimizu Corp. , Environ. Solution Div. , Shibaura, Minato-ku, Tokyo 105-8007, Japan

5.Shimizu Corp. , Environ. Solution Div. , Shibaura, Minato-ku, Tokyo 105-8007, Japan

6.Faculty of Engineering, Oita University, Dannoharu 700, Oita 870-1192, Japan

7.Faculty of Engineering, Aichi Institute of Technology, Yakusa , Toyota 470-0392, Japan

关键词：柏木炭 , 微孔 , 中孔 , 炭化 , 过热蒸气

Nanoporous carbons from cypress Ⅰ.Preparation and pore structure

Keywords： Cypress charcoal , Microporous , Mesoporous , Carbonization , Super-heated steam

柏木条经过热蒸气处理,成功地制备了纳米孔炭,无需另行活化,比表面积就可达1000m2/g以上.如果在800 ℃～870 ℃炭化,柏木炭外表面积可达400m2/g以上,与同样温度在氩气中炭化得到的柏木炭相比,后者微孔面积仅为30m2/g～40m2/g.在900℃以上炭化得到的柏木炭,微孔表面积高达800m2/g以上,外表面积约为150m2/g.柏木炭的孔结构可以通过调节过热蒸气的温度得到控制.

Nanoporous carbons were prepared from cypress chips under a flow of super-heated steam, and their surface area reached more than 1 000 m2/g without an additional activation process. Cypress charcoals prepared at a temperature of 800-870 ℃ had a large external surface area of more than 400 m2/g, comparable to the microporous surface area,even though only 30-40 m2/g was obtained by carbonization in a flow of Ar gas. Cypress charcoals prepared above 900 ℃ were microporous with a microporous surface area more than 800 m2/g and an external surface area of about 150 m2/g. The pore structure in cypress charcoals could be controlled by selecting the temperature of the steam.

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