将粉煤灰与Na2CO3以一定比例磨细混合均匀,在反应温度800～900℃,保温时间60～120 min下进行反应.以浓度为3.14 mol/L的盐酸时反应产物进行酸浸,经过滤除杂后的体系由溶胶相向凝胶相转变,再次过滤、干燥得最终SiO2产品,该SiO2质量分数在98%以上,比表面积为775.12m2/g.
参考文献
| [1] | Giere R;Carleton L;Lumpkin G .Micro-nanochemistry of fly ash from a coal-fired power plant[J].American Mineralogist,2003,88:1853-1865. |
| [2] | Kikuchi R .Application of coal ash to environmental improvement transformation into zeolite,potassium fertilizer and FGD absorbent[J].Resources Conservation and Recycling,1999,27:333-346. |
| [3] | A. Fernandez-Jimenez;A. Palomo .Characterisation of fly ashes. Potential reactivity as alkaline cements[J].Fuel,2003(18):2259-2265. |
| [4] | G.G. Hollman;G. Steenbruggen;M. Janssen--Jurkovicova .A two--step process for the synthesis of zeolites from coal fly ash[J].Fuel,1999(10):1225-1230. |
| [5] | Peng F;Liang K M;Hu A M .Nano-crystal glass-ceremics obtained from high alumina coal fly ash[J].FUEL,2005,84:341-346. |
| [6] | Hrubesh LW. .Aerogel applications[J].Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites,1998(1):335-342. |
| [7] | Einarsrud MA.;Nilsen E.;Mortensen K.;Samseth J.;Kirkedelen MB. .Structural development of silica gels aged in TEOS[J].Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites,1998(1/2):10-16. |
| [8] | 瞿其曙,何友昭,淦五二,李敏,林祥钦.超细二氧化硅的制备及研究进展[J].硅酸盐通报,2000(05):57-64. |
| [9] | Kalapathy U.;Shultz J.;Proctor A. .A simple method for production of pure silica from rice hull ash[J].Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies,2000(3):257-262. |
| [10] | 陈庆春,王廷吉,周萍华,彭人勇.硅灰石合成高比表面积二氧化硅的工艺研究[J].化工矿物与加工,2000(08):1-3. |
| [11] | 侯贵华,罗驹华,陈景文.稻壳制备高纯高表面积SiO2的研究[J].化学世界,2004(09):458-460,469. |
| [12] | Tzong-Horng Liou .Preparation and characterization of nano-structured silica from rice husk[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2004(1/2):313-323. |
| [13] | 贾光耀,邓育新.硅溶胶凝胶化过程的研究[J].硅酸盐通报,2004(06):91-93. |
| [14] | 沈钟;王国庭.胶体与表面化学[M].北京:化学工业出版社,2003 |
| [15] | 王星东,王亚军,杨武利,董安钢,任楠,谢在库,唐颐.纳米沸石胶体化学性质的研究[J].化学学报,2003(03):354-358. |
| [16] | 杨桦.高比表面SiO2微粉的制备及微孔形成机理[J].吉林大学自然科学学报,1997(03):82-84. |
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