Determination Optimum B2O3, KCl and NaOH Molar Ratios in the Synthesis of Potassium Borates

Yıl 2015, Cilt: 11 Sayı: 3, 0 - , 23.12.2015

Seyhun Kıpçak , Merve Günal Sibel Ila Meral Yıldırım Mehmet Piskin Emek Derun

https://doi.org/10.18466/cbujos.80610

Cited By: 2

Öz

Borates are attention getting chemical compounds because of their properties which leads them a wide usage area. Being sub-group of borates, potassium borates show non-linear optical properties and owing to this they can find applications in optical modulation, optical switching, optical logic and memory, signal processing. Potassium borates can be used in welding, insulation, metal refining and lubricating oil production applications, also.

In this study, potassium borates were produced from potassium chloride (KCl), sodium hydroxide (NaOH) and boron oxide (B₂O₃) when different molar ratios of B₂O₃ were used to find out the optimum ratio for the synthesis at 80°C and 1 hour of reaction time. The molar ratios of reactants were examined as 1:1:3 (as KCl:NaOH: B₂O₃), 1:1:4, 1:1:5, 1:1:6 and 1:1:7. The identification of products and the effects of different molar ratios on the final product were determined by X-Ray Diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FT-IR) methods. According to experimental results, the Santite (KB₅O₈·4H₂O) mineral with powder diffraction file number (pdf) code of 01-072-1688 was produced for all molar ratios whereas the optimum ratios in which highest XRD score was obtained was 1:1:7. 

Anahtar Kelimeler

potassium borates, hydrothermal sythesis, XRD, FT-IR.

Kaynakça

• Bruce A. Kennedy, Surface Mining, 2nd ed, Society for Mining, Metallurgy, and Exploration (U.S.), 1990, pp.120-125.
• Yilmaz, O., Boron in Turkey: Between myth and reality, Insight Turkey, vol. 9 (4), pp. 37-43.
• Santite, 2001-2005 Mineral Data Publishing, version 1.
• Yang, G. Li, Zhang, Y., Dehydration of tetrahydrate potassium pentaborate in fluidized bed, Chemical Engineering and Processing, vol. 44, 2005, 1216–1220.
• Gürbüz, H., Badem, G., Bulutcu, A.N., Determination of crystal growth kinetics of potassium pentaborate in a fluidized bed crystallizer, Journal of Crystal Growth, vol. 283, 2005, 222–229.
• Xue, D., Zhang, S., The Origin of nonlinearities in K[B5O6(OH)4]•2H2O crystal, Physica Status Solidi (b), vol. 200, 1997, 351-358.
• Dewey, C. F., Cook,W. R., Hodgson, R. T., Wynne, J. J., Frequency doubling in KBsOs•4H2O and NH4BsOs•4H2O to 217.3 nm, Applied Physics Letters, vol. 26, 1975, 714-716.
• Rajasekarc, S.A., Thamizharasana, K., Joseph Arul Pragasamb, Packiam Juliusc, A., J., Sagayaraj, P., Growth and characterization of pure and doped potassium pentaborate (KB5) single crystals, Journal of Crystal Growth, vol. 247, 199–206.
• Senthilkumar, M., Crystal growth and characterization of La2CaB10O19, NdxLa2-xCaB10O19 and K2B4O11H8 for NLO and laser applications and theoretical analysis of nonlinear optical property of La2CaB10O19 crystal, 2010, Doctor Of Philosophy Thesis, Faculty Of Science And Humanities, Anna University, Chennai.
• Thamizharasan, K., Xavier Jesu Raja, S., Xavier, Francis P., Sagayaraj, P., Growth, thermal and microhardness studies of single crystals of potassium penta borate (KB5), Journal of Crystal Growth, vol. 247, 2003, 199–206.
• Çelik, A.G., Investigation on characteristic properties of potassium borate and sodium borate blended perlite bricks, Journal of Cleaner Production, vol. 102, 2015, 88-95.
• Li, Z.P., Liu, B. H., Morigasaki, N., Suda, S., reparation of potassium borohydride by a mechano-chemical reaction of saline hydrides with dehydrated borate through ball milling, Journal of Alloys and Compounds, vol. 354, 2003, 243–247.
• Wang, G., Sun, Y., Zheng, S., Yang, G., Synthesis and crystal structure of a novel potassium borate with an unprecedented [B12O16(OH)8]4-anion, Zeitschrift für anorganische und allgemeine Chemie, vol. 632, 2006, 632, 1586-159.
• Zhu, F.Y., Fang, C.H., Fang, Y., Zhou, Y.Q., Ge, H. W., Liu, H.Y., Structure of aqueous potassium metaborate solution, Journal of Molecular Structure, vol. 1070, 2014, 80–85.
• L. Xingcheng, P. Shilie, F. Xiaoyun, W. Jide, L. Gang, “Crystal growth and characterization of K2B4O11H8, Journal of Crystal Growth, vol: 311, 3517–3521.