Macroscopic shaping of carbon nanotubes with high specific surface area and full accessibility

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• 作者：Yuefeng Liu^a ; Lam D. Nguyen^b ; Tri Truong-Huu^a ; Yu Liu^a ; Thierry Romero^a ; Izabela Janowska^a ; Dominique Begin^a ; Cuong Pham-Huu^a ; ^{cuong.pham-huu@unistra.fr}
• 关键词：Carbon nanotubes ; Macroscopic shaping ; Full accessibility ; Pressure drop ; Catalyst support
• 刊名：Materials Letters
• 出版年：2012
• 期刊代码：59_0167577x
• 类别：ms
• 出版时间：15 July, 2012
• 卷：79
• 期：Complete
• 页码：128-131
• 文件大小：980 K

摘要

Carbon nanotubes (CNTs) with controlled macroscopic shape, i.e. beads, extrudates, disk, etc., were prepared by gelation process. The formed CNT beads (1-2 mm) were constituted by highly entangled CNT forming a dense network exhibiting a rather high specific surface (> 180 m².g^鈭?#xA0;1) and also full porous network accessibility. The highly opened porosity of this material also drastically reduces the overall pressure drop across the packed bed compared to the bulk CNT material. The macroscopic shaping eases the handling and the transport of these nanoscopic materials and permits the direct use of them as catalyst supports in conventional catalytic processes.