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Interceram - International Ceramic Review

, Volume 63, Issue 4–5, pp 220–224 | Cite as

Characterization of Synthetic Amorphous Silica (SAS) Used in the Ceramics Industry

  • L. Fernandes
  • C. C. de Arruda
  • A. D. V. Souza
  • R. Salomão
High-Performance Ceramics
  • 1 Downloads

Abstract

Silica (SiO2) is one of the most important inputs for the food, pharmaceutics, polymer composite, and ink manufacturing industries. In ceramic materials, fine silica particles are widely used as a packing and sintering aid and to produce other raw materials like mullite (3Al2O3·2SiO2) and silicon carbide (SiC). As most of the silica sources found in nature have relatively low purity and nonhomogeneous properties, use of synthetic grades of silica is necessary in applications such as refractories and technical ceramics that require better control of product composition and microstructure. This paper describes a systematic comparison of four grades of synthetic amorphous silica (SAS) used in technical ceramics. The evaluated SAS materials were formulated by different methods (sodium silicate precipitation, SiCl4 pyrolysis, extraction from rice husks, and physical deposition of silicon vapour). Differences in the physicochemical and thermal and microstructural characterization of each material are related to the principles and techniques involved in their manufacture. The study verified that synthesis conditions strongly influenced the composition and physical properties of the tested SAS samples.

Keywords

silica (SiO2amorphous synthetic pyrolysis precipitation rice husk microsilica 

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References

  1. [1]
    Hahn, B.R., Johnson, E.L., Melaiye, A.M., Jiang, B., Kinsey, R.A.: (The Goodyear Tire & Rubber Company-US) US 8,440,750 B2, 14 May 2013Google Scholar
  2. [2]
    Schaal, S., Coran, A.Y., Mowdood, S.K.: (Pirelli Pneumatici S.P.A.-IT) WO 01/64782 A1, 07 September 2001Google Scholar
  3. [3]
    Menezes, R.R., Fagury-Neto E., Fernandes, M.C., Souto, P.M., Kiminami, R.H.G.A.: Porous mullite obtained using silica from rice husk and aluminum acetate (in Portuguese). Cerâmica 54 (2008) 245–252CrossRefGoogle Scholar
  4. [4]
    Schneider, H., Schreuer, J., Hildmann, B.: Structure and properties of mullite: A review. J. Eur. Ceram. Soc. 28 (2008) 329–344CrossRefGoogle Scholar
  5. [5]
    Liu, N., Huo, K., McDowell, M.T., Zhao, J., Cui, Y.: Rice husks as a sustainable source of nanostructured silicon for high performance Li-ion battery anodes. Scientific Reports 3 (2013) [1919] 1–7Google Scholar
  6. [6]
    Reinhardt, H., Abitzsch, G. (Henkel Kommanditgeesellschaft Auf Aktien.-DE), 0 306 828 A3, 01 September 1988Google Scholar
  7. [7]
    Novotny, R., Hoff, A., Schuertz, J. (Henkel Kommanditgeesellschaft Auf Aktien.-DE), WO 90/08733, 09 August 1990Google Scholar
  8. [8]
    Ma, X., Zhou, B., Gao, W., Qu, Y., Wang, L., Wang, Z., Zhu, Y.: A recyclable method for production of pure silica from rice hull ash. Powder Techn. 217 (2012) 497–501CrossRefGoogle Scholar
  9. [9]
    Moerters, M., Jacobsen, H., Schumacher, K. (Degussa AG, Duesseldorf-DE), US Patent 7 541 014 B2, 02 June 2009Google Scholar
  10. [10]
    Iler, R.K.: The colloid chemistry of silica and silicate. Edit. Ithaca, New York (1979) 1–250Google Scholar
  11. [11]
    Real, C., Alcalá, M. D., Criado, J.M.: Preparation of silica from Rice Husks. J. Am. Ceram. Soc. 79 (1996) [8] 2012–2016CrossRefGoogle Scholar
  12. [12]
    Dastol, M., Tveit, H., Dingsoyr, E.O., Ronning, P., Harsaker, S. (Elkem A/S-NO), PI patent 9407106-3A, 19 July 1994Google Scholar
  13. [13]
    Rahaman, M.N.: Ceramic Processing and Sintering, 2th Ed. Marcel Dekker, New York (2003) 150Google Scholar
  14. [14]
    Plank, J., Schroefl, C., Gruber, M., Lesti, M., Sieber, R.: Effectiveness of polycarboxylate superplasticizers in ultra-high strength concrete: the importance of PCE compatibility with silica fume. J. Adv. Concrete Techn. 7 (2009) [1] 5–12CrossRefGoogle Scholar
  15. [15]
    Lowell, S., Shields, J.E.,: Powder Surface Area and Porosity, 3rd Ed. Chapman & Hall, London (1991) 56Google Scholar
  16. [16]
    International Union of Pure and Applied Chemistry IUPAC. Reporting data for gas/solid systems with special reference to the determination of surface area and porosity. Pure Appl. Chem. 57 (1985) [4] 603–19CrossRefGoogle Scholar
  17. [17]
    Quercia, G., Lazaro, A., Geus, J.W., Brouwers, H.J.H.: Characterization of morphology and texture of several amorphous nano-silica particles used in concrete. Cement and Concrete Comp. (2014) (in press)Google Scholar
  18. [18]
    Sun, L., Gong, K.: Silicon-based materials from rice husks and their applications. Ind. Eng. Chem. Res. 40 (2001) 5861–5877CrossRefGoogle Scholar
  19. [19]
    Chandrasekhar, S., Pramada, P.N., Raghaven, P., Satyanarayana, K.G., Gupta, T.N.: Microsilica from rice husk as a possible substitute for condensed silica fume for high performance concrete. J. Mater. Sci. Let. 21 (2002) 1245–1247CrossRefGoogle Scholar
  20. [20]
    Lim, H.M., Lee, J., Jeong, J.H., Oh, S.G., Lee, S.H.: Comparative study of various preparation methods of colloidal silica. Engineering 2 (2010) 998–1005CrossRefGoogle Scholar
  21. [21]
    Salomão, R., Souza, A.D.V., Fernandes, L., Arruda, C.C.: Advances in nanotechnology for refractories: When very small meets hot, heavy, and large. Am. Ceram. Soc. Bull. 92 (2013) [7] 22–28Google Scholar

Copyright information

© Springer Fachmedien Wiesbaden 2014

Authors and Affiliations

  • L. Fernandes
    • 1
  • C. C. de Arruda
    • 1
  • A. D. V. Souza
    • 1
  • R. Salomão
    • 1
  1. 1.Materials Engineering Department, São Carlos School of EngineeringUniversity of São PauloSão CarlosBrazil

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