Temperature Effect on the Solid-State Synthesis of Dehydrated Zinc Borates
Turkey has 72 % of total world boron reserves on the
basis of B2O3.Borates that is a refined form of boron minerals have a
wide range of applications. Zinc borates can be used as multifunctional
synergistic additives. The most important properties are
low solubility in water and high dehydration temperature. Zinc
borates dehydrate above 290°C and anhydrous zinc borate has
thermal resistance about 400°C. Zinc borates can be synthesized
using several methods such as hydrothermal and solid-state
processes. In this study, the solid-state method was applied between
500 and 800°C using the starting materials of ZnO and H3BO3 with
1:4 mole ratio. The reaction time was determined as 4 hours after
some preliminary experiments. After the synthesis, the crystal
structure and the morphology of the products were examined by XRay
Diffraction (XRD), Fourier Transform Infrared Spectroscopy
(FT-IR) and Raman Spectrometer. As a result the form of ZnB4O7
was synthesized with the highest crystal score at 800°C.
[1] D. G├╝rhan, G. ├û. ├çakal, ─░. Ero─ƒlu, and S. ├ûzkar, Kesikli reaktörde ├ºinko
borat ├╝retimini etkileyen parametrelerin incelenmesi, 1. National Boron
Workshop Symposium Book, April 28-29, Ankara, 2005.
[2] D. Schubert, F. Alam, M. Visi and C. Knobler, "Structural
characterization and chemistry of the industrially important zinc borate
Zn[B3O4(OH)3]", Chem. Mater., vol. 15, pp. 866-871, 2002.
[3] A. V. Shete, S. B. Sawant, and V. G. Pangarkar, "Kinetics of fluid-solid
reaction with an insoluble product: zinc borate by the reaction of boric
acid and zinc oxide", J. Chem. Technol. Biot., vol. 79, pp. 526-532,
2004.
[4] X. Shi, Y. Xiao, M. Li, L. Yuan, and J. Sun, "Synthesis of an
industrially important zinc borate, 2ZnO┬À3B2O3┬À3H2O, by a rheological
phase reaction method" Powder Technol., vol. 186, pp. 263-266, 2008.
[5] X. Shi, M. Li, H. Yang, S. Chen, L. Yuan, K. Zhang, and J. Sun, "PEG-
300 assisted hydrothermal synthesis of 4ZnO.B2O3.H2O nanorods",
Mater. Res. Bull., vol.. 42, pp. 1644-1649, 2007.
[6] H. Igarashi, H. Sawada, A. Tatebe, and K. Sakao, Patent No: 6780913,
U.S.A., 2002.
[1] D. G├╝rhan, G. ├û. ├çakal, ─░. Ero─ƒlu, and S. ├ûzkar, Kesikli reaktörde ├ºinko
borat ├╝retimini etkileyen parametrelerin incelenmesi, 1. National Boron
Workshop Symposium Book, April 28-29, Ankara, 2005.
[2] D. Schubert, F. Alam, M. Visi and C. Knobler, "Structural
characterization and chemistry of the industrially important zinc borate
Zn[B3O4(OH)3]", Chem. Mater., vol. 15, pp. 866-871, 2002.
[3] A. V. Shete, S. B. Sawant, and V. G. Pangarkar, "Kinetics of fluid-solid
reaction with an insoluble product: zinc borate by the reaction of boric
acid and zinc oxide", J. Chem. Technol. Biot., vol. 79, pp. 526-532,
2004.
[4] X. Shi, Y. Xiao, M. Li, L. Yuan, and J. Sun, "Synthesis of an
industrially important zinc borate, 2ZnO┬À3B2O3┬À3H2O, by a rheological
phase reaction method" Powder Technol., vol. 186, pp. 263-266, 2008.
[5] X. Shi, M. Li, H. Yang, S. Chen, L. Yuan, K. Zhang, and J. Sun, "PEG-
300 assisted hydrothermal synthesis of 4ZnO.B2O3.H2O nanorods",
Mater. Res. Bull., vol.. 42, pp. 1644-1649, 2007.
[6] H. Igarashi, H. Sawada, A. Tatebe, and K. Sakao, Patent No: 6780913,
U.S.A., 2002.
@article{"International Journal of Chemical, Materials and Biomolecular Sciences:56449", author = "N. Tugrul and N. Baran Acarali and A. S. Kipcak and E. Moroydor Derun and S. Piskin", title = "Temperature Effect on the Solid-State Synthesis of Dehydrated Zinc Borates", abstract = "Turkey has 72 % of total world boron reserves on the
basis of B2O3.Borates that is a refined form of boron minerals have a
wide range of applications. Zinc borates can be used as multifunctional
synergistic additives. The most important properties are
low solubility in water and high dehydration temperature. Zinc
borates dehydrate above 290°C and anhydrous zinc borate has
thermal resistance about 400°C. Zinc borates can be synthesized
using several methods such as hydrothermal and solid-state
processes. In this study, the solid-state method was applied between
500 and 800°C using the starting materials of ZnO and H3BO3 with
1:4 mole ratio. The reaction time was determined as 4 hours after
some preliminary experiments. After the synthesis, the crystal
structure and the morphology of the products were examined by XRay
Diffraction (XRD), Fourier Transform Infrared Spectroscopy
(FT-IR) and Raman Spectrometer. As a result the form of ZnB4O7
was synthesized with the highest crystal score at 800°C.", keywords = "Raman, solid-state method, zinc borate, XRD.", volume = "7", number = "5", pages = "282-5", }