物理化学学报 >> 2014, Vol. 30 >> Issue (12): 2307-2314.doi: 10.3866/PKU.WHXB201410142

催化和表面科学 上一篇    下一篇

有序介孔二氧化硅对正丁醛的吸附性能

黄天辉1, 赵玉娟2, 田兆福1, 李小兰1, 刘茜1, 赵东元2   

  1. 1. 广西中烟工业有限责任公司技术中心, 南宁 530001;
    2. 复旦大学化学系, 上海 200433
  • 收稿日期:2014-07-08 修回日期:2014-10-14 发布日期:2014-11-27
  • 通讯作者: 赵东元 E-mail:dyzhao@fudan.edu.cn
  • 基金资助:

    真龙-复旦功能材料化学联合实验室项目(20120208Y)资助

Adsorption Properties of Ordered Mesoporous Silica for Butyraldehyde

HUANG Tian-Hui1, ZHAO Yu-Juan2, TIAN Zhao-Fu1, LI Xiao-Lan1, LIU Qian1, ZHAO Dong-Yuan2   

  1. 1. Technology Centre, China Tobacco Guangxi Industrial Incorporation, Nanning 530001, P. R. China;
    2. Department of Chemistry, Fudan University, Shanghai 200433, P. R. China
  • Received:2014-07-08 Revised:2014-10-14 Published:2014-11-27
  • Contact: ZHAO Dong-Yuan E-mail:dyzhao@fudan.edu.cn
  • Supported by:

    The project was supported by the Zhenlong-Fudan Joint Laboratory Project, China (20120208Y).

摘要:

合成了一系列具有不同孔结构与性质的有序介孔二氧化硅材料SBA-15、MCM-41、SBA-16、KIT-6, 同时通过改变水热温度制备了不同孔径大小的SBA-15, 并利用小角X射线散射、透射电镜、扫描电镜和氮气吸附-脱附等手段, 对其介孔结构进行了表征. 以正丁醛为探针分子, 考察了其对有机醛的吸附, 并与Y-沸石的吸附性能做了对比. 结果表明, 材料的介孔比表面积与其对正丁醛的吸附量成正比, 吸附等温线符合Langmuir 模型, 属于单层吸附, 具有最大介孔比表面积的MCM-41对正丁醛的吸附量最大(484 mg·g-1). 最后将SBA-15添加到卷烟滤嘴中, 实验结果表明, SBA-15能显著降低卷烟烟气中巴豆醛的释放量.

关键词: 介孔二氧化硅, 合成, 吸附, 丁醛, 巴豆醛, 卷烟烟气

Abstract:

Ordered mesoporous silica materials SBA-15, MCM-41, SBA-16, KIT-6 with different pore sizes and properties were prepared. Several SBA-15 materials were synthesized with different pore diameters by changing the hydrothermal temperature. The materials produced were characterized using small-angle X-ray scattering (SAXS), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and nitrogen adsorption/desorption. The adsorption isotherms of organic aldehyde were measured, using butyraldehyde as a model molecule. The results were compared with those for the adsorption capacity of Y-zeolite; they showed that the specific surface area originating from the mesopores was proportional to the amount of butyraldehyde adsorption. The adsorption isotherms agreed with Langmuir mode for monolayer adsorption. Mesoporous silica MCM-41 with the highest mesopore specific surface area showed the highest adsorbed amount of butyraldehyde (484 mg·g-1). The SBA-15 sample was selected for the fabrication of cigarette filters, and the results showed that SBA-15 significantly reduced the amount of Croton aldehyde released in cigarette smoke.

Key words: Mesoporous silica, Synthesis, Adsorption, Butyraldehyde, Croton aldehyde, Cigarette smoke

MSC2000: 

  • O647