[1]王芳,李瑞菲,罗仲宽.常压干燥法制备介孔SiO2气凝胶[J].深圳大学学报理工版,2010,27(1):70-75.
 WANG Fang,LI Rui-fei,and LUO Zhong-kuan.Preparation of mesoporous silica aerogels via ambient pressure drying[J].Journal of Shenzhen University Science and Engineering,2010,27(1):70-75.
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常压干燥法制备介孔SiO2气凝胶()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第27卷
期数:
2010年1期
页码:
70-75
栏目:
化学与化工
出版日期:
2010-01-31

文章信息/Info

Title:
Preparation of mesoporous silica aerogels via ambient pressure drying
文章编号:
1000-2618(2010)01-0070-06
作者:
王芳李瑞菲罗仲宽
深圳大学化学与化工学院,深圳市功能高分子重点实验室,深圳 518060
Author(s):
WANG FangLI Rui-feiand LUO Zhong-kuan
College of Chemistry and Chemical Engineering,Shenzhen Key Laboratory of Functional Polymer,Shenzhen University,Shenzhen 518060,P.R.China
关键词:
化学工艺纳米多孔材料SiO2气凝胶介孔材料
Keywords:
chemical technologynanoporous materialSiO2aerogelmesoporous material
分类号:
O 648.17
文献标志码:
A
摘要:
以硅酸钠为硅源,三甲基氯硅烷为表面修饰剂,采用浸泡老化、表面改性、溶剂置换和分级干燥等措施,避免了常压干燥过程中的体积收缩,制备出具有高比表面积的介孔SiO2气凝胶.所得SiO2气凝胶密度为0.128~0.139 g/cm3,比表面积为617~656 m2/g,平均孔径为14.49~20.20 nm.红外光谱分析表明气凝胶表面已被甲基所覆盖.
Abstract:
Using sodium silicate as silica sources,trimethylchlorosilane(TMCS) modified SiO2 hydrogels were prepared by a simple sol-gel process.After immersing and aging, surface modification,solvent replacement and fractional drying,mesoporous SiO2 aerogels were obtained via an ambient pressure drying technique.The density, specific surface areas and average diameter of the mesoporous SiO2 aerogels were 0.128-0.139 g/cm3, 617-656 m2/g and 14.49-20.20 nm respectively.Fourier transform infrared spectroscopy analyses indicate that the SiO2 surface was modified by —O—SiCH3.This process led to obvious surface hydrophobicity of SiO2 aerogels.

参考文献/References:


[1]刘朝辉,苏勋家,侯根良,等.SiO2气凝胶的改性研究及在航空航天领域的应用[J].工艺与材料,2006,10:61-64.
[2]Dorcheh A S,Abbasi M H.二氧化硅气凝胶:合成、性能和表征[J].材料加工技术,2008,199:10-26.(英文版)
[3]Nadargi D Y,Rao A V.甲基三乙氧基硅烷:合成二氧化硅气凝胶的新前躯体[J].合金与化合物,2009,467(1/2):397-404.(英文版)
[4]Sarawade P B,Kim J K,Kim H K,等.基于正硅酸乙酯的高比表面大孔容气凝胶的常压制备[J],表面应用科学,2007,254(2):574-579.(英文版)
[5]王立久,赵善宇,杨梅.通过一步法溶剂交换/表面改性常压干燥制备所得二氧化硅气凝胶的结构表征和导热性能[J].材料化学与物理学,2009,113(1): 485-490.(英文版)
[6]Gorle B S K,Smirnova I,Dragan M,等.超临界条件下气凝胶的结晶化[J].超临界流体,2008, 44(1):78-84.(英文版)
[7]Wagh P B,Rao A V,Haranath D.前躯体、溶剂和水的摩尔比对正硅酸乙酯在柠檬酸催化下所制得的二氧化硅气凝胶的物理特性的影响[J].材料化学与物理学,1998,53(1):41-47.(英文版)
[8]Rao V,Haranath D.甲基三乙氧基硅烷对合成的二氧化硅气凝胶的疏水性和一些物理特性的影响[J].材料微孔与介孔,1999,30(2/3):267-273.(英文版)
[9]沈军,王际超,倪星元,等.以水玻璃为源常压制备高保温二氧化硅气凝胶[J].功能材料,2009,40(1):149-151.
[10]史非,王立久,刘敬肖.纳米介孔SiO2 气凝胶的常压干燥制备及表征[J].硅酸盐学报,2005,33(8):963-967.
[11]史非,王立久,刘敬肖.二氧化硅气凝胶的快速常压干燥合成与表征[J].材料通讯,2006,60(29/30):3718-3722.(英文版)
[12]Hwang S W,Kim T Y, Hyun S H.常压块状二氧化硅气凝胶的瞬时溶剂交换/表面改性过程的优化[J].胶体与界面科学,2008,322(1):224-230.(英文版)
[13]Shewale P M,Rao A V,Tao A P.不同三甲基硅烷化试剂对二氧化硅气凝胶疏水性和物理特性的影响[J].表面应用科学,2008,254:6902-6907.(英文版)
[14]Hwang S W, Jung H H,Hyun S H,等.大块无裂纹二氧化硅气凝胶的常压干燥制备[J].溶胶-凝胶科学技术,2007,41(2):139-146.(英文版)
[15]Bhagat S D,Kim Y H,Suh K H,等.从水凝胶中去除钠离子与表面改性/溶剂置换同时进行而制备的二氧化硅气凝胶粉末的超级疏水性[J].微孔与介孔材料,2008,112(1/3):504-509.(英文版)
[16]朱建军,谢吉民,陈敏,等.粉煤灰制二氧化硅表面疏水改性机理研究[J],非金属矿,2008,31(1):7-9.
[17]李云辉,张文娟,张伟娜,等.疏水性二氧化硅气凝胶性能表征[J].材料科学与工艺,2007,15(3):358-361.


[1]LIU Chao-hui,SU Xun-jia,HOU Gen-liang,et al.Study on modification of SiO2 aerogel and application on the aerospace field[J].Materials and Techniques,2006,10:61-64.(in Chinese)
[2]Dorcheh A S,Abbasi M H.Silica aerogel;synthesis, properties and characterization [J].Journal of Materials Processing Technology,2008,199:10-26.
[3]Nadargi D Y,Rao A V.Methyltriethoxysilane:new precursor for synthesizing silica aerogels[J].Journal of Alloys and Compounds,2009,467(1/2):397-404.
[4]Sarawade P B,Kim J K,Kim H K,et al. High specific surface area TEOS-based aerogels with large pore volume prepared at an ambient pressure[J]. Applied Surface Science,2007,254(2):574-579.
[5]WANG Li-jiu,ZHAO Shan-yu,YANG Mei.Structural characteristics and thermal conductivity of ambient pressure dried silica aerogels with one-step solvent exchange/surface modification[J].Materials Chemistry and Physics,2009,113(1): 485-490.
[6]Gorle B S K,Smirnova I,Dragan M, et al. Crystallization under supercritical conditions in aerogels[J].The Journal of Supercritical Fluids,2008, 44(1):78-84.
[7]Wagh P B,Rao A V,Haranath D. Influence of molar ratios of precursor,solvent and water on physical properties of citric acid catalyzed TEOS silica aerogels[J].Materials Chemistry and Physics,1998,53(1):41-47.
[8]Rao V,Haranath D.Effect of methyltrimethoxysilane as a synthesis component on the hydrophobicity and some physical properties of silica aerogels[J].Microporous and Mesoporous Materials,1999,30( 2/3):267-273.
[9]SHEN Jun,WANG Ji-chao,NI Xing-yuan,et al.Preparation of silica aerogels with non-ionic exchange water glass[J].Function Materials,2009,40(1):149-151.(in Chinese)
[10]SHI Fei,WANG Li-jiu,LIU Jing-xiao.Preparation and characterization of nano-mesoporous SiO2 aerogel via ambient pressure drying[J].Journal of the Chinese Ceramic Society,2005,33(8):963-967.(in Chinese)
[11]SHI Fei,WANG Li-jiu,LIU Jing-xiao.Synthesis and characterization of silica aerogels by a novel fast ambient pressure drying process[J].Materials Letters,2006,60(29/30):3718-3722.
[12]Hwang S W,Kim T Y, Hyun S H.Optimization of instantaneous solvent exchange/surface modification process for ambient synthesis of monolithic silica aerogels[J].Journal of Colloid and Interface Science,2008,322(1):224-230.
[13]Shewale P M,Rao A V,Tao A P. Effect of different trimethyl silyating agents on the hydrophobic and physical properties of silica aerogels[J].Applied Surface Science,2008,254:6902-6907.
[14]Hwang S W, Jung H H,Hyun S H,et al.Effective preparation of crack-free silica aerogels via ambient drying[J].Journal of Sol-Gel Science and Technology,2007,41(2):139-146.
[15]Bhagat S D,Kim Y H,Suh K H,et al.Superhydrophobic silica aerogel powders with simultaneous surface modification,solvent exchange and sodium ion removal from hydrogels[J]. Microporous and Mesoporous Materials,2008,112(1/3):504-509.
[16]ZHU Jian-jun,XIE Ji-min, CHEN Min,et al.Study on Reaction mechanism of hydrophobic modification of silica based on fly ash[J].Non-Metallic Mines,2008,31(1):7-9.(in Chinese)
[17]LI Yun-hui,ZHANG Wen-juan,ZHANG Wei-na,et al. Characterization of hydrophobic silica aerogels properties[J].Materials Science & Technology,2007,15(3):358-361.(in Chinese)

备注/Memo

备注/Memo:
收稿日期:2009-06-17;修回日期:2009-11-10
基金项目:深圳市科技计划资助项目(08CXY-21)
作者简介:王芳(1973-),女(汉族),湖北省十堰市人,深圳大学副教授.E-mail:wfang7373@sina.com
通讯作者:罗仲宽(1962-),男(汉族),深圳大学教授、博士.E-mail:luozhongkuan@126.com
更新日期/Last Update: 2010-02-06