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Preparation of cobalt titanates via co-precipitation while using industrial intermediates as titanium precursors

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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
This paper reports on the results of cobalt titanates preparation by calcination of green bodies obtained by a co-precipitation method. For the investigations were used: as titanium sources, acidic solutions of titanyl sulfate and hydrous titanium dioxide, originating from the production process of titanium dioxide by sulfate method. The composition of the obtained materials was determined using titration methods. The calcined powders were characterized by X-ray diffraction method. It has been found that the obtained products are composed of cobalt methatitanate CoTiO3 or cobalt orthotitanate Co2TiO4 occurring as single phases, and also as cobalt titanates and titanium dioxide phase mixtures. The proposed method of proceeding can be used for the preparation of series of transition metals titanates, such as nickel, iron, zinc, copper and also aluminium titanates.
Rocznik
Strony
51--54
Opis fizyczny
Bibliogr. 14 poz., rys., tab.
Twórcy
autor
autor
autor
  • West Pomeranian University of Technology, Institute of Chemistry and Environmental Protection, al. Piastów 42, 71-065 Szczecin, aleks@zut.edu.pl
Bibliografia
  • 1. Yankin, A. M. & Balakirev, V. F. (2002). Phase Equilibria in the Co-Mn-Ti-O System over Wide Ranges of Temperatures and Oxygen Pressures. Inorg. Mat. 38(4), 309-319. DOI: 10.1023/A:1015150300878.
  • 2. Pacheco, F., Gonzalez, M., Medina, A., Velumani, S. & Ascencio, J.A. (2004). Structural analysis of cobalt titanate nanoparticles obtained by sol-gel process. Appl. Phys. A: Mat. Sci. & Proc. 78(4), 531-536. DOI: 10.1007/s00339-003-2454-4.
  • 3. Zhou, L., Zhang, S., Cheng, J., Zhang, L. & Zeng Z. (1997). Optical absorptions of nanoscaled CoTiO3 and NiTiO3. Mat. Sci. & Eng. B. 49(2), 117-122. DOI: 10.1016/S0921-5107(97)00115-3.
  • 4. Pan, T.M., Lei, T.F. & Chao T.S. (2001). Comparison of ultrathin CoTiO3 and NiTiO3 high-κ gate dielectrics. J. Appl. Phys. 89(6), 3447-3452. DOI: 10.1063/1.1347405.
  • 5. Siemons, M. & Simon, U. (2007). Gas sensing properties of volume-doped CoTiO3 synthesized via polyol method. Sens. Act.B. 126, 595-603. DOI: 10.1016/j.snb.2007.04.009.
  • 6. Siemons, M. & Simon U. (2006). Preparation and gas sensing properties of nanocrystalline La-doped CoTiO3. Sens. Act. B. 120, 110-118. DOI: 10.1016/j.snb.2006.01.049.
  • 7. Chu, X., Liu, X., Wang, G. & Meng, G. (1999). Preparation and gas-sensing properties of nano- CoTiO3. Mat. Res. Bull. 34(10/11), 1789-1795. DOI: 10.1016/S0025-5408(99)00167-1.
  • 8. Levinson, R., Berdahl, P., Akbari, H. (2005). Solar spectral optical properties of pigments-Part II: survey of common colorants. Sol. Energy Mat. & Sol. Cells. 89, 351-389. DOI: 10.1016/j.solmat.2004.11.013.
  • 9. Othmer, K. (1983). Encyclopedia of chemical technology (Vol.23, pp. 113, 146, 153). A Wiley Interscience Publication, John Wiley & Sons, New York.
  • 10. Tsokov, P.D., Blaskov, V.N., Stefanov, Y. & Dobrev T.M. (2006). Synthesis of cobalt titanates and their stability in sulphate solutions. J. Int. Res. Pub. 1, 22-30, from http://www.ejournalnet.com/technomat/volume-1/technomat-1-3.swf http://www.ejournalnet.com/technomat/volume-1/technomat-1-3.swf
  • 11. Pishch, I.V. & Radion, E.V. (2003). Production of pigments with perovskite-like structure based on nickel titanate by the precipitation method. Glass and Ceramics. 60(5-6), 154-157. DOI: 10.1023/A:1025760901128.
  • 12. Lin, Y., Chang, Y., Yang W. & Tsai B. (2006). Synthesis and characterization of ilmenite NiTiO3 and CoTiO3 prepared by a modified Pechini method. J. Non-Crystal. Sol. 352(8), 789-794. DOI: 10.1016/j.jnoncrysol.2006.02.001.
  • 13. Barksdale, J. (1996). Titanium: its occurrence, chemistry and technology (pp. 214). The Ronald Press Company, New York.
  • 14. Charnet, T. (1999). Applied mineralogical studies on Australian sand ilmenite concentrate with special reference to its behaviour in the sulphate process. Min. Eng. 12(5), 485-495. DOI: 10.1016/S0892-6875(99)00035-7.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPS2-0052-0082
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