Characterisation of highly dispersed magnesium silicates prepared from silica sols and selected magnesium salts

• Autorzy: Ciesielczyk F. , Jesionowski T.

Warianty tytułu

PL

Charakterystyka wysoko zdyspergowanych krzemianów magnezu otrzymywanych w oparciu o zole kwasu krzemowego i wybrane sole magnezu

• Języki publikacji: EN

Abstrakty

EN

A process of obtaining synthetic magnesium silicate by a precipitation method with the use of silicic acid sols and selected magnesium salts was analysed in order to establish the optimum parameters of the process ensuring getting a product of desired properties. The influence of the following parameters was taken into regard: concentration and type of magnesium salt, concentration of silicic acid sol and direction of reagents supply. The synthetic magnesium silicate was subjected to physico-chemical analysis. The chemical compositions of the products and their crystalline structures were determined. Moreover, the morphology, dispersion and adsorption properties of the products were characterised. The magnesium silicate obtained according to the procedure proposed is highly dispersed, homogeneous and of well-developed surface area.

PL

Przedstawiono rezultaty badań nad otrzymywaniem syntetycznego krzemianu magnezu metodą strąceniową w oparciu o zole kwasu krzemowego i wybrane związki magnezu. Istotnym zagadnieniem realizowanej tematyki było dobranie podstawowych parametrów prowadzenia procesu strącania, celem uzyskania produktu o jak najlepszych właściwościach fizykochemicznych. W trakcie badań przeanalizowano następujące parametry procesu: stężenie i rodzaj soli magnezu, stężenie zolu kwasu krzemowego, kierunek dozowania reagentów. Dodatkowo otrzymany syntetyczny krzemian magnezu poddany został analizie fizykochemicznej.

Słowa kluczowe

EN

magnesium silicate; silica sol; precipitation; dispersive characteristics; surface area

PL

krzemian magnezu; zol krzemionkowy; wytrącanie; charakterystyka dyspersji; pole powierzchni

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2011
• Tom: Vol. 46
• Strony: 279--288
• Opis fizyczny: Bibliogr. 17 poz.

Twórcy

autor

Ciesielczyk F.

autor

Jesionowski T.

• Poznan University of Technology, Institute of Chemical Technology and Engineering M. Sklodowskiej-Curie 2, 60-965 Poznan, Poland,

Bibliografia

• 1. BAŞÇETIN E., ATUN G., 2010, Adsorptive removal of strontium by binary mineral mixtures of montmorillonite and zeolite, J. Chem. Eng. Data, 55, 783-788.
• 2. BREW D.R.M., GLASSER F.P., 2005, Synthesis and characterization of magnesium silicate hydrate gels, Cem. Concr. Res., 35, 85-98.
• 3. BRUCATO J.R., MENNELLA V., COLANGELI L., ROTUNDI A., PALUMBO P., 2002, Production and processing of silicates in laboratory and in space, Planet. Space Sci., 50, 829-837.
• 4. BRUCH C., KRUGER J.K., UNRUH H.G., KRAUSS W., ZIMMERMEIER B., BECK C., HAMPELMANN R. 1997, Inelastic light scattering and phonon-confinement in nanocrystaline Y2O3, J. Phys. Chem., 101(11), 1761-1764.
• 5. CARRETERO M.I., POZO M., 2010, Clay and non-clay minerals in the pharmaceutical and cosmetics industries Part II. Active ingredients, Appl. Clay Sci., 47, 171-181.
• 6. CIESIELCZYK F., KRYSZTAFKIEWICZ A., JESIONOWSKI T., 2004, Influence of precipitation parameters on physicochemical properties of magnesium silicates, Physicochem. Problems Mineral. Proc., 38, 197-205.
• 7. CIESIELCZYK F., KRYSZTAFKIEWICZ A., JESIONOWSKI T., 2007, Physicochemical studies on precipitated magnesium silicates, J. Mater. Sci., 42, 3831-3840.
• 8. DOUY A., 2002, Aqueous synthesis of forsterite (Mg2SiO4) and enstatite (MgSiO3), J. Sol-Gel Sci. Technol., 24, 221-228.
• 9. EL-NAGGAR I.M., ABOU-MESALAM M.M., 2007, Novel inorganic ion exchange materials based on silicates; synthesis, structure and analytical applications of magneso-silicate and magnesium alumino-silicate sorbents, J. Hazard. Mater., 149, 686-692.
• 10. FABIAN D., JÄGER C., HENNING Th., DORSCHNER J., MUTSCHKE H., 2000, Steps toward interstellar silicate mineralogy. - V. Thermal evolution of amorphous magnesium silicates and silica, Astron. Astrophys., 364, 282-292.
• 11. GOLUBERA O., KORYTKOVA E.N., GUSAROV V.U., 2005, Hydrothermal synthesis of magnesium silicate montmorillonite for polymer-clay nanocomposites, Russ. J. Appl. Chem., 78(1), 26-32.
• 12. KURC B., JESIONOWSKI T., KRYSZTAFKIEWICZ A., 2008, Formation and physicochemical properties of silica fillers precipitated in emulsion medium, Physicochem. Problems Mineral. Proc., 42, 67-74.
• 13. Mc KENZIE J.D., 1988, Applications of the sol-gel process, J. Non-Cryst. Solids, 100(1-3), 162-168.
• 14. MODRZEJEWSKA-SIKORSKA A., CIESIELCZYK F., KRYSZTAFKIEWICZ A., JESIONOWSKI T., 2010, Synthesis and characterization of precipitated copper(II) silicates, Physicochem. Problems Mineral. Proc., 44, 157-168.
• 15. STRACK H., KLEINSCHMIT P., 1987, Magnesium-silicate bound zeolite granulates of the type of zeolite A, process for their production and use, U.S. Patent No. 4668648.
• 16. SUDA S., TASHIRO T., UMEGAKI T., 1999, Synthesis of MgO-SiO2 and CaO-SiO2 amorphous powder by sol-gel process and ion exchange, J. Non-Cryst. Solids, 255, 178-184.
• 17. VILLANUEVA M.P., CABEDO L., LAGARÓN J.M. , GIMÉNEZ E., 2010, Comparative study of nanocomposites of polyolefin compatibilizers containing kaolinite and montmorillonite organoclays, J. Appl. Polym. Sci., 115, 1325-1335.