以海泡石矿物为原料,通过干压成型制备了氧化硅( SiO2)基多孔陶瓷膜支撑体,研究了烧成温度对制备试样的物相组成、微观结构、平均孔径、孔隙率、纯水渗透通量和抗弯强度的影响.结果表明,经1100 ~ 1200℃保温2h烧成制备的SiO2基多孔陶瓷支撑体试样主要由石英主晶相和少量滑石晶相组成,具有良好的结构与性能,可用于SiO2复合陶瓷膜的制备.1200℃烧成制备的试样孔隙率和平均孔径分别为31.4%和1.72 μm,其水通量和抗弯强度分别可达到20.30 m3·m-2·h-1·bar-1和61.0 MPa.
参考文献
[1] | F.Petrus Cuperus;Robert W.van Gemert .Dehydration using ceramic silica pervaporation membranes-the influence of hydrodynamic conditions[J].Separation and Purification Technology,2002(3):225-229. |
[2] | J.Sekulic;M.W.J.Luiten;J.E.ten Elshof;N.E.Benes;K.Keizer .Microporous silica and doped silica membrane for alcohol dehydration by pervaporation[J].Desalination: The International Journal on the Science and Technology of Desalting and Water Purification,2002(1/3):19-23. |
[3] | Soufyani M;Jei T;Bourret D et al.Silicone modified silica membrane application to the gas separation[J].Separation and Purification Technology,2001,25:451-457. |
[4] | G. Xomertiakis;C. M. Braunbarth;B. Smarsly;N. Liu;R. Kohn;Z. Klipowicz;C. J. Brinker .Aerosol-assisted deposition of surfactant-templated mesoporous silica membranes on porous ceramic supports[J].Microporous and Mesoporous Materials,2003(1):91-101. |
[5] | Elaboration and characterization of tubular macroporous ceramic support for membranes from kaolin and dolomite[J].Journal of porous materials,2010(1):1. |
[6] | Dong Y C;Hampshire S;Zhou J E et al.Recycling of fly ash for preparing porous mullite membrane supports with titania addition[J].Journal of Hazardous Materials B:Environmental Technologies,2010,180:173-180. |
[7] | G.Tartaglione;D.Tabuani;G.Camino .Thermal and morphological characterisation of organically modified sepiolite[J].Microporous and mesoporous materials: The offical journal of the International Zeolite Association,2008(1/2):161-168. |
[8] | 王继忠,李金山,梁波,张振宇.海泡石的基础性能研究[J].南开大学学报(自然科学版),2002(03):118-122. |
[9] | Burggraaf A J;Cot L.Fundamentals of inorganic membrane science and technology[M].Amsterdam:Elsevier Science,1996 |
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