Easy synthesis of an ordered mesoporous carbon with a hexagonally packed tubular structure

被引:160
作者
Lu, AH
Li, WC
Schmidt, W
Kiefer, W
Schüth, F
机构
[1] Max Planck Inst Kohlenforsch, D-45470 Mulheim An Der Ruhr, Germany
[2] Univ Wurzburg, Inst Phys Chem, D-97074 Wurzburg, Germany
关键词
porous carbon; impregnation; pyrolysis; adsorption; X-ray diffraction;
D O I
10.1016/j.carbon.2004.07.006
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Ordered mesoporous carbon with hexagonal arrays of tubes (CMK-5) was successfully synthesized via a nanocasting process by directly using SBA-15; instead of AlSBA-15, as a template, furfuryl alcohol as a carbon source and oxalic acid as the catalyst. The time consuming impregnation of SBA-15 with aluminum could be saved. The as-synthesized CMK-5 exhibits a tubular structure with double pore system. The loading amount of carbon precursor on the pore walls of SBA-15 is the key factor for the formation of the CMK-5 structure with two-dimensional hexagonal arrays of tubes, and the pore diameter can be adjusted by varying the loading amount of the carbon precursor. The CMK-5 carbon exhibits high apparent surface area up to similar to2500 m(2)/g and high pore volume reaching similar to2 cm(3)/g, which is due to the unique structure of CMK-5. The characterization results confirmed that carbonization under argon atmosphere instead of vacuum is sufficient for the structural formation of CMK-5 carbons, and can be used as an alternative pathway to prepare tubular-type carbons. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码:2939 / 2948
页数:10
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