The Determination of the Potassium Nitrate, Sodium Hydroxide and Boric Acid Molar Ratio in the Synthesis of Potassium Borates via Hydrothermal Method
Potassium borates, which are widely used in welding
and metal refining industry, as a lubricating oil additive, cement
additive, fiberglass additive and insulation compound, are one of the
important groups of borate minerals. In this study the production of a
potassium borate mineral via hydrothermal method is aimed. The
potassium source of potassium nitrate (KNO3) was used along with a
sodium source of sodium hydroxide (NaOH) and boron source of
boric acid (H3BO3). The constant parameters of reaction temperature
and reaction time were determined as 80°C and 1 h, respectively. The
molar ratios of 1:1:3 (as KNO3:NaOH:H3BO3), 1:1:4, 1:1:5, 1:1:6
and 1:1:7 were used. Following the synthesis the identifications of
the produced products were conducted by X-Ray Diffraction (XRD),
Fourier Transform Infrared Spectroscopy (FT-IR) and Raman
Spectroscopy. The results of the experiments and analysis showed in
the ratio of 1:1:6, the Santite mineral with powder diffraction file
number (pdf no.) of 01-072-1688, which is known as potassium
pentaborate (KB5O8·4H2O) was synthesized as best.
[1] U.S Geological survey minerals Yearbook (2008) section 13.1
[2] Z.G. Zhang, M.B. Boisen, Jr., L. W. Finger and G. V. Gibbs, “Molecular
mimicry of the geometry and charge density distribution of polyanions
in borate minerals”, American Mineralogist, Vol. 70 , pages 1238-1247
(1985).
[3] V. Joseph, V. Santhanam, S. Gunasekaran, P. Sagayaraj, S. Ponnusamy,
“Vibrational spectra and analysis on the molecule of potassium
pentaborate crystal”, Indian Journal of Pure & Applied Physics, Vol. 41,
March 2003, pp. 161-166. [4] F.Y. Zhu, C.H. Fang, Y. Fang, Y.Q. Zhou, H.W. Ge, H.Y. Liu,
“Structure of aqueous potassium metaborate solution”, Journal of
Molecular Structure 1070 (2014) 80-85.
[5] Gökhan Elmaci, Okan Icten, Ahmet Nedim Ay, Birgu
[1] U.S Geological survey minerals Yearbook (2008) section 13.1
[2] Z.G. Zhang, M.B. Boisen, Jr., L. W. Finger and G. V. Gibbs, “Molecular
mimicry of the geometry and charge density distribution of polyanions
in borate minerals”, American Mineralogist, Vol. 70 , pages 1238-1247
(1985).
[3] V. Joseph, V. Santhanam, S. Gunasekaran, P. Sagayaraj, S. Ponnusamy,
“Vibrational spectra and analysis on the molecule of potassium
pentaborate crystal”, Indian Journal of Pure & Applied Physics, Vol. 41,
March 2003, pp. 161-166. [4] F.Y. Zhu, C.H. Fang, Y. Fang, Y.Q. Zhou, H.W. Ge, H.Y. Liu,
“Structure of aqueous potassium metaborate solution”, Journal of
Molecular Structure 1070 (2014) 80-85.
[5] Gökhan Elmaci, Okan Icten, Ahmet Nedim Ay, Birgu
@article{"International Journal of Chemical, Materials and Biomolecular Sciences:70149", author = "M. Yildirim and A. S. Kipcak and F. T. Senberber and M. O. Asensio and E. M. Derun and S. Piskin", title = "The Determination of the Potassium Nitrate, Sodium Hydroxide and Boric Acid Molar Ratio in the Synthesis of Potassium Borates via Hydrothermal Method", abstract = "Potassium borates, which are widely used in welding
and metal refining industry, as a lubricating oil additive, cement
additive, fiberglass additive and insulation compound, are one of the
important groups of borate minerals. In this study the production of a
potassium borate mineral via hydrothermal method is aimed. The
potassium source of potassium nitrate (KNO3) was used along with a
sodium source of sodium hydroxide (NaOH) and boron source of
boric acid (H3BO3). The constant parameters of reaction temperature
and reaction time were determined as 80°C and 1 h, respectively. The
molar ratios of 1:1:3 (as KNO3:NaOH:H3BO3), 1:1:4, 1:1:5, 1:1:6
and 1:1:7 were used. Following the synthesis the identifications of
the produced products were conducted by X-Ray Diffraction (XRD),
Fourier Transform Infrared Spectroscopy (FT-IR) and Raman
Spectroscopy. The results of the experiments and analysis showed in
the ratio of 1:1:6, the Santite mineral with powder diffraction file
number (pdf no.) of 01-072-1688, which is known as potassium
pentaborate (KB5O8·4H2O) was synthesized as best.", keywords = "Hydrothermal synthesis, potassium borate,
potassium nitrate, santite.", volume = "9", number = "5", pages = "605-4", }