Easy synthesis of an ordered mesoporous carbon with a hexagonally packed tubular structure
Easy synthesis of an ordered mesoporous carbon with a hexagonally packed tubular structure
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DOI：
10.1016/j.carbon.2004.07.006
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发表时间：
2004-01-01
期刊：
影响因子：
10.9
通讯作者：
Schüth, F
中科院分区：
文献类型：
--
作者：
Lu, AH;Li, WC;Schüth, F
直接使用SBA-15通过纳米铸造工艺成功合成了具有六角形管阵列的有序介孔碳（CMK-5）；以代替AlSBA-15为模板剂、糠醇为碳源、草酸为催化剂。可以节省用铝浸渍 SBA-15 的耗时过程。合成的 CMK-5 呈现出具有双孔系统的管状结构。 SBA-15孔壁上碳前驱体的负载量是形成二维六边形管阵列CMK-5结构的关键因素，并且可以通过改变碳前驱体的负载量来调节孔径。 CMK-5碳表现出高达约2500 m(2)/g的高表观表面积和高达约2 cm(3)/g的高孔体积，这是由于CMK-5的独特结构。表征结果证实，在氩气气氛下而不是在真空下碳化足以形成CMK-5碳的结构，并且可以作为制备管状碳的替代途径。 (C) 2004 Elsevier Ltd. 保留所有权利。
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.