Shape-controlled multi-porous carbon with hierarchical micro–meso-macro pores synthesized by flash heating of wood biomass

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• 作者：F. Kurosaki ; H. Koyanaka ; M. Tsujimoto ; Y. Imamura
• 关键词：Knowledge spillovers ; Patent citations ; Semiconductor industry
• 刊名：Carbon
• 出版年：2008
• 期刊代码：10_00086223
• 类别：ms
• 出版时间：May 2008
• 卷：46
• 期：6
• 页码：850-857
• 文件大小：1265 K

摘要

We developed a simple synthesis of shape-controlled porous carbon materials that combine a high porosity of over 80%with a high Brunauer–Emmett–Teller surface area of 670 m²/g. The synthesis involves flash heating of sawdust and subsequent low-temperature heat treatment (380 °C). Flash heating changed the morphology of the sawdust to the specific three-dimensional microtexture of amorphous carbon, and the subsequent heat treatment dramatically increased the surface area of the shape-controlled porous carbon materials. The products consisted of cross-linked carbon beams containing surface micro-pores (pore size < 2 nm) and meso-pores (5 nm < pore size < 50 nm). Moreover, macro-pores (5 μm < pore size < 50 μm) were found between the cross-linked carbon beams.