无外加酸体系中 AlSBA-15 为模板,有序介孔炭材料 CMK-3 的合成与表征

石 磊; 徐 磊| 邢立淑; 李湘萍; 杨 成; 林 森

无外加酸体系中 AlSBA-15 为模板,有序介孔炭材料 CMK-3 的合成与表征

山东轻工业学院山东省轻工助剂重点实验室,山东济南 250353|
常州大学石油化工学院,江苏常州 213164|

基金项目: 山东省高等学校科技计划项目( J12LA02);山东省优秀中青年科学家科研奖励基金(BS2012L027) .

详细信息

作者简介:
石磊,博士,讲师. E-mail: jlshilei@ yahoo. com. cn

通讯作者:
林森. E-mail: yangcheng@ qibebt. ac. cn,linsen@ qibebt. ac. cn

中图分类号: O613. 71
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出版历程
- 收稿日期: 2014-08-12
- 录用日期: 2014-12-30
- 修回日期: 2014-12-01
- 刊出日期: 2014-12-30

Synthesis and characterization of ordered mesoporous carbons CMK-3 produced by tailoring the mesopores of an AlSBA-15hard template synthesized without acid

(
Shandong Provincial Key Laboratory of Fine Chemicals, Shandong Polytechnic University, Jinan 250353, China|
Institute of Petrochemical Technology, Changzhou University, Changzhou 213164, China|

Funds: Shandong Provincial High School Science and Technology Fund Planning Project (J12LA02);Shangdong Provincial Young and Middle-Aged Scientists Research Awards Fund (BS2012L027).

More Information

Author Bio:
SHI Lei, Ph. D, Lecture. E-mail: jlshilei@ yahoo. com. cn

Corresponding author: LIN Sen. E-mail: yangcheng@ qibebt. ac. cn, linsen@ qibebt. ac. cn

摘要

摘要:
在无外加酸体系中改变晶化温度合成 AlSBA-15 介孔材料,并以此为刚性模板, 蔗糖为碳源,合成出一系列具有不同孔结构的有序介孔炭材料 CMK-3,系统考察晶化温度对 AlSBA-15 和其反相复制结构 CMK-3 孔道结构的影响。结果显示在无外加酸合成体系中改变晶化温度可对 AlSBA-15 的孔道结构进行有效调控, 通过结构复制技术可制备出具有不同结构的 CMK-3。控制刚性模板 AlSBA-15 的晶化温度为 90°C,所得介孔炭材料 CMK-3 (CMK-3 (90))结构最佳,除介孔排列高度有序外, 还具有高比表面积(1688m² · g ^-1 )和大孔容 (0. 95cm ³· g ^-1 )。另外,对 CMK-3 的微孔性质与刚性模板孔壁中的次级介孔结构的内在联系进行研究, 发现调变刚性模板的晶化温度可以有效改善有序介孔炭材料 CMK-3 的结构性质。
- 有序介孔炭 CMK-3 /
- 硬模板 AlSBA-15 /
- 晶化温度 /
- 结构可控
Abstract:
Highly ordered mesoporous carbons (OMCs) designated CMK-3 were synthesized using mesoporous Al-SBA-15 with different textural properties as hard templates and sucrose as a carbon source. Al-SBA-15 is an ordered mesoporous alumina-silica synthesized with a soft template, P123. The effect of the aging temperature for the hard templates on the pore structure of CMK-3 was investigated. X-ray diffraction, N 2 adsorption and transmission electron microscopy were used to characterize the pore structures of the hard templates and the resultant CMK-3. Result indicates that CMK-3 with different pore structures can be obtained by tailoring the pore structures of the hard templates bysimply controlling the aging temperature in an acid-free medium. The best CMK-3 possessed a highly-ordered pore structure, and a very high BET surface area (1 688 m ²·g ^-1 ) and pore volume (0. 95 cm ³ ·g^-1 ) when the hard template was aged at 90 °C. The microporous character of the CMK-3 was related to the thickness of the mesopore wall of the hard templates. The textural characteristics of the resultant CMK-3 can be improved by simply adjusting the aging temperature in the synthesis of the hard templates to control their mesopore structure.
- Ordered mesporous CMK-3 /
- Hard templates AlSBA-15 /
- Aging temperature /
- Controllable pore structure