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Characterization and Properties of Sodium Hexa-Fluorosilicate and its Potential Application in the Production of Sodium Fluoride

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Abstract

Sodium hexa-fluorosilicate (Na2SiF6) is a synthetic inorganic material with distinguished chemical, thermal and optical properties. In this research, a pure sodium hexa-fluorosilicate sample was systematically investigated via various characterization techniques. The amounts of constitutional elements and impurities were investigated using X-ray fluorescence and the chemical purity was determined as 99.89 wt%. Physical properties were calculated as 2.7085 g/cm3 for density, 0.98 m2/g for specific surface area and a mean particle size (D50) of 77.3 μm. Thermal analysis was applied to understand the degradation of Na2SiF6 till 900 °C. The mineral composition and morphology was studied using X-ray diffraction, scanning and transmission electron microscopy and revealed the existence of P321 type hexagonal structure associated by elongated prism shaped precipitated crystals. Spectroscopy studies were performed via different techniques at different ranges of measurement. Thermal stability was investigated by post-mortem phase analysis of heat treated Na2SiF6 samples and showed a well stability till 400 °C. It is proposed that the thermal dissociation of Na2SiF6 can be utilized as a facile, inexpensive and green way for the synthesis of sodium fluoride instead of routine hydrofluoric acid-based methods. The obtained results suggested that the examined sodium hexa-fluorosilicate material could potentially be used as a reliable precursor in the synthesis of fluoride and silicon based materials due to its acceptable physical properties, chemical purity and thermal behavior.

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References

  1. Lacson CFZ, Lu MC, Huang YH (2020) Fluoride network and circular economy as potential model for sustainable development - a review. Chemosphere 239:124662

    CAS  PubMed  Google Scholar 

  2. Peresypkina EV, Blatov VA (2003) Structure-forming components in crystals of ternary and quaternary 3d-metal complex fluorides. Acta Cryst B59:361–377

    CAS  Google Scholar 

  3. Kumar M, Babu MN, Mankhand TR, Pandey BD (2010) Precipitation of sodium silicofluoride (Na2SiF6) and cryolite (Na3AlF6) from HF/HCl leach liquors of alumino-silicates. Hydrometallurgy 104:304–307

    CAS  Google Scholar 

  4. Toure AO, Sambe FM, Koita D, Diop CMG, Sock O (2012) Processes for working-up an aqueous fluosilicic acid solution. S Afr J Sci 108:1–5

    Google Scholar 

  5. Jeong HL, Huh YD (2010) Synthesis of hexagonal prisms and hexagonal plates of Na2SiF6 microcrystals. Mater Lett 64:1816–1818

    CAS  Google Scholar 

  6. Olchowka J, Suta M, Wickleder C (2017) Green synthesis of A2SiF6 (a=Li-Cs) nanoparticles using ionic liquids as solvents and as fluorine sources: a simple approach without HF. Chem Eur J 23:12092–12095

    CAS  PubMed  Google Scholar 

  7. Barve RA, Patil RR, Moharil SV, Bhatt BC, Kulkarni MS (2016) Effect of Al3+ co-doping on the luminescence properties of cu doped Na2SiF6. Appl Radiat Isotopes 116:57–62

    CAS  Google Scholar 

  8. Krylov VA, Sorochkina TG, Bulanov AD, Lashkov AY (2012) C1-C4 hydrocarbon release in the preparation of SiF4 through Na2SiF6 pyrolysis. Inorg Mater 48:7–9

    CAS  Google Scholar 

  9. Valbe R, Maeorg U, Lohmus A, Reedo V, Koel M, Krumme A, Kessler V, Hoop A, Romanov AE (2012) A novel route of synthesis of sodium hexa fluorosilicate two component cluster crystals using BF4− containing ionic liquids. J Cryst Growth 361:51–56

    CAS  Google Scholar 

  10. Mukhamedyanov MM, Plotnikov IA (2014) Use of a chloroform by-product in raw fur and hide dressing processes. Russ Agric Sci 40:295–297

    Google Scholar 

  11. Wang H, Mao Q, Gao Y, Wang Z, Cui S (2017) Effect and mechanism of sodium fluosilicate on setting time of cement. Mater Sci Forum 898:1978–1983

    Google Scholar 

  12. Ren Z, Yu F, Gao H, Chen Z, Peng Y, Liu L (2017) Selective separation of fluorite, barite and calcite with valonea extract and sodium fluosilicate as depressants. Minerals 7:24

    Google Scholar 

  13. Rice CR, Slater C, Faulkner RA, Allan RL (2018) Self-assembly of an anion-binding cryptand for the selective encapsulation, sequestration, and precipitation of phosphate from aqueous systems. Angew Chem Int Ed 57:13071–13075

    CAS  Google Scholar 

  14. Natali M, Nastasi F, Puntoriero F, Sartorel A (2019) Mechanistic insights into light-activated catalysis for water oxidation. Eur J Inorg Chem 15:2027–2039

    Google Scholar 

  15. Cai Z, Li Y, Tian W (2011) Electrochemical behavior of silicon compound in LiF-NaF-KF-Na2SiF6 molten salt. Ionics 17:821–826

    CAS  Google Scholar 

  16. Chen G, Zhu S, Jiang Z, Gao L, Ma Z, Liu L (2017) Laser ablation protection of polymer matrix composites by adhesive inorganic coatings. J Mater Sci 52:12734–12741

    CAS  Google Scholar 

  17. Wiankowska KK, Lipa S, Krasowski M, Sokołowski J, Butkiewicz KL, Nowicka A (2020) Evaluation of gap formation at the composite resin-tooth interface after using universal adhesives: in vitro SEM study using the replica technique. Microsc Res Tech 83:176–185

    Google Scholar 

  18. Shakhrai SG, Mikhalev YG, Kalinovskaya TG, Arkhipov GV, Ivanova AM (2016) Investigation and choice of materials for the electrical insulation of the steel bloom of an aluminum electrolyzer. Metallurgist 60:622–628

    CAS  Google Scholar 

  19. Spomer N, Holl S, Zherlitsyna L, Maysamy F, Frost A, Auner N (2015) Amorphous silicon: new insights into an old material. Chem Eur J 21:5600–5616

    CAS  PubMed  Google Scholar 

  20. Frçhlich P, Lorenz T, Martin G, Brett B, Bertau M (2017) Valuable metals-recovery processes, current trends, and recycling strategies. Angew Chem Int Ed 56:2544–2580

    Google Scholar 

  21. Rehman ZU, Koo BH (2016) Combined effect of long processing time and Na2SiF6 on the properties of PEO coatings formed on AZ91D. J Mater Eng Perform 25:3531–3537

    CAS  Google Scholar 

  22. Vasconcelos HCSPM, Gonçalves MC (2016) Overall aspects of non-traditional glasses: synthesis, properties and applications. Bentham Sci Publishers:39–65

  23. Khan MS, Shahzadi P, Alam S, Javed K, Shaheen F, Naqvi J, Shahnaz A (2015) Development of heat resistant borosilicate glass doped with sodium silico fluoride compound. J Chem Mater Res 4:13–18

    CAS  Google Scholar 

  24. Kassem AS, Mostafa MZ, Abadir MF, Sherbiny SAE (2010) Hot water acid-resistant enamels for sheet steel. Mater Corrosion 61:58–63

    CAS  Google Scholar 

  25. Hui X, Gui L, Feng CJ, Ping LW (2014) Recovery of high specific area silica and sodium fluoride from sodium hexafluorosilicate. J Cent South Univ 21:4084–4090

    Google Scholar 

  26. Cruz ALL, Canul MIP (2007) In situ synthesis of Si3N4 in the Na2SiF6-N2 system via CVD: kinetics and mechanism of solid-precursor decomposition. Solid State Ionics 177:3529–3536

    Google Scholar 

  27. Haddaji Y, Majdoubi H, Mansouri S, Tamraoui Y, Boulif R, Oumam M, Hannache H (2020) Effect of sodium hexafluorosilicate addition on the properties of metakaolin based geopolymers cured at ambient temperature. Silicon. https://doi.org/10.1007/s12633-020-00536-9

  28. Zhang W, Jing Q, Fang Y, Chen Z (2017) Synthesis, structure and properties of nonlinear optical crystal Na2SiF6. Z Anorg Allg Chem 643:1739–1743

    CAS  Google Scholar 

  29. Ha J, Novitskaya E, Lam N, Sanchez M, Kim YH, Li Z, Im WB, Graeve OA, McKittrick J (2020) Synthesis of Mn4+ activated Na2SiF6 red-emitting phosphors using an ionic liquid. J Lumin 218:116835

    CAS  Google Scholar 

  30. Liu Y, Li Y, Meng J, Liang W, Huang W, Liao S, Huang Y, Zhang H (2020) Novel luminescence enhancement and splitting of excitation and emission bands of Na2SiF6:Mn4+,Li+ phosphors induced by Li+ co-doping. J Lumin 217:116770

    CAS  Google Scholar 

  31. Tiwari A, Dhoble SJ (2019) Tunable lanthanide/transition metal ion-doped novel phosphors for possible application in w-LEDs: a review. Lumin 1-30

  32. Zhao JY, Wang XG (2019) Preparation, structure and luminescent performance of Na2SiF6:Re3+(Re3+=Eu3+, Tb3+,Ce3+) powders. Appl Phys A Mater Sci Process 125:178

    CAS  Google Scholar 

  33. Luo X, Hou Z, Zhou T, Xie RJ (2020) A universal HF-free synthetic method to highly efficient narrowband red-emitting A2XF6:Mn4+ (a = K, Na, Rb, Cs; X = Si, Ge, Ti) phosphors. J Am Ceram Soc 103:1018–1026

    CAS  Google Scholar 

  34. Yeo BE, Cho YS, Huh YD (2016) Synthesis and photoluminescence properties of a red-emitting phosphor, K2SiF6:Mn4+, for use in three-band white LED applications. Opt Mater 51:50–55

    CAS  Google Scholar 

  35. Jenkins R, Snyder RL (2012) Introduction to X-ray powder Diffractometry2nd edn. John Wiley & Sons, New York

    Google Scholar 

  36. Arianpour F, Cakir Arianpour A, Aali B (2019) Chemical and surface properties of sodium silicofluoride. 2nd international conference on materials science, mechanical and automotive engineering and technology (IMSMATEC’19), Cappadocia, Turkey, June 1165-7

  37. Chang SY, Wang C, Sun CC (2019) Relationship between hydrate stability and accuracy of true density measured by helium pycnometry. Int J Pharm 567:118444

    CAS  PubMed  Google Scholar 

  38. Buchwald T, Schmandra G, Schützenmeister L, Fraszczak T, Mütze T, Peuker U (2020) Gaseous flow through coarse granular beds: the role of specific surface area. Powder Technol 366:821–831

    CAS  Google Scholar 

  39. Li H, Li J, Bodycomb J, Patience GS (2019) Experimental methods in chemical engineering: particle size distribution by laser diffraction-PSD. Canadian J Chem Eng 97:2577–2577

    Google Scholar 

  40. Kashiwaya Y, Cramb AW (2002) Kinetics of formation and dissociation of Na2SiF6. Metall Mater Trans B Process Metall Mater Process Sci 33B:129–136

    CAS  Google Scholar 

  41. Cakir Arianpour A, Arianpour F, Aali B (2020) Microstructural study and thermal behavior of sodium silicofluoride. Int J Eng Res Develop (IJERAD) 12:113–117

    Google Scholar 

  42. Soltani N, Canul MIP, Gonzalez LA, Bahrami A (2016) Mechanism and parameters controlling the decomposition kinetics of Na2SiF6 powder to SiF4. Int J Chem Kinetic 48:379–395

    CAS  Google Scholar 

  43. Zalkin A, Forrester JD, Templeton DH (1964) The crystal structure of sodium fluosilicate. Acta Cryst 17:1408–1412

    CAS  Google Scholar 

  44. Liu J, Du N, Wu P, Wang J, Zhang H, Yang D (2012) Large-scale synthesis of water-soluble Na2SiF6 nanotubes with polyacrylic acid as a surfactant. Mater Res Bull 47:3923–3926

    CAS  Google Scholar 

  45. Zhigadl ND (2014) Crystal growth of hexagonal boron nitride (hBN) from mg-B-N solvent system under high pressure. J Cryst Growth 402:308–311

    Google Scholar 

  46. Rane AV, Kanny K, Abitha VK, Thomas S (2018) Methods for synthesis of nanoparticles and fabrication of nanocomposites. Synthesis of Inorganic Nanomaterials: Advances and Key Technologies, Elsevier 121–139

Download references

Acknowledgments

This work was supported by Scientific Research Project Coordination Unit of Kastamonu University (grant number KÜ-BAP01/2018-46).

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Authors and Affiliations

  1. Research and Application Center, Kastamonu University, Kastamonu, Turkey

    Farzin Arianpour

  2. Department of Ceramic and Glass, Faculty of Fine Arts and Design, Kastamonu University, Kastamonu, Turkey

    Aslı Çakır Arianpour

  3. Research & Development Center, Arya Tabalvor Arvand Co, Abadan, Iran

    Behnam Aali

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  1. Farzin Arianpour
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  2. Aslı Çakır Arianpour
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  3. Behnam Aali
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Correspondence to Farzin Arianpour.

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Arianpour, F., Arianpour, A.Ç. & Aali, B. Characterization and Properties of Sodium Hexa-Fluorosilicate and its Potential Application in the Production of Sodium Fluoride. Silicon 13, 4381–4389 (2021). https://doi.org/10.1007/s12633-020-00755-0

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