SavedAdd your journal

Journals / Anadolu Üniversitesi Bilim ve Teknoloji Dergisi :A-Uygulamalı Bilimler ve Mühendislik / 2017 / Cilt: 18 - Sayı: 3

KINETICS OF BORAX DEHYDRATION BY THERMAL ANALYSIS

Mehmet R. ALTIOKKA
Elif AKBAY
Pages
713–719
Publication Date
2022-10-11
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

It was also found that this value is in a good agreement with those calculated from Kissinger and Doyle methods.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Anhydrous borax is an important industrial product obtained either from borax decahydrate or borax pentahydrate.
📊
Key Findings & Data:The kinetics of dehydration of borax pentahydrate using TG and DTA techniques was studied.
💡
Conclusion & Impact:It was also found that this value is in a good agreement with those calculated from Kissinger and Doyle methods.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Anhydrous borax is an important industrial product obtained either from borax decahydrate or borax pentahydrate. The kinetics of dehydration of borax pentahydrate using TG and DTA techniques was studied. It was shown that 2.25 mole of the crystal water removes in the first step with zero order kinetics in the temperature range between 382 and 433 K. The removing of the remaining water was completed at 733 K with the second order reaction in the second steps. Arrhenius form of reaction rate constant for step 1 and 2 were also determined. They are: 5.37 10 exp( 16141.5 ) 15 k0    T and 1.4exp( 1575.6 ) k2   T respectively, where T is absolute temperature in K. The total activation energy calculated from Coats-Redfern method was found to be 147.3 kJ/mol. It was also found that this value is in a good agreement with those calculated from Kissinger and Doyle methods.

🔖

Cite This Article

ALTIOKKA, M. R., AKBAY, E. (2022). KINETICS OF BORAX DEHYDRATION BY THERMAL ANALYSIS. Anadolu Üniversitesi Bilim ve Teknoloji Dergisi :A-Uygulamalı Bilimler ve Mühendislik, Cilt: 18 - Sayı: 3, 713–719. https://ajindex.com/articles/436644

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (17)

  1. Hubert M, Faber AJ. Effect of borate raw material choices on the batch reactions of Alkali-Lean borosilicate glasses. 76th Conference on Glass Problems, 2016; 37(1): 43-56
  2. Uwe EA, Boccaccini AR, Cook SG, Cheeseman, CR. Effect of borate addition on the sintered properties of pulverized fuel ash. Ceram Int 2007; 33: 993-999
  3. Şahin Ö, Bulutcu AN. Evaluation of thermal decomposition kinetics of borax pentahydrate using genetic algorithm method by isothermal analysis. Turk J Chem 2003; 27: 197-207
  4. Santos DMF, Sequeira CAC. Sodium borohydride as a fuel for the future, Renew Sustainable Energy Rev 2011; 15(8): 3980-4001
  5. Şahin Ö, Bulutcu AN. Dehydration of borax pentahydrate behavior to anhydrous borax by multistage heating in a fluidized bed calcinator. Turk J Chem 2002; 26: 89-96
  6. Kocakuşak S, Köroğlu JH, Ekinci E, Tolun R. Production of anhydrous borax using microwave heating. Ind Eng Chem Res 1995; 34: 881-885
  7. Asensio MO, Yildirim M, Senberber F, Kipcak AS, Derun EM. Thermal dehydration kinetics and characterization of synthesized potassium borates. Res Chem Intermed 2016; 42(5): 4859-4878
  8. Peng L, Qisui W, Xi L, Chaocan Z. Investigation of the states of water and OH groups on the surface of silica. Colloid Surf A 2009; 334: 112-115
  9. Moura AO, Prado AGS. Effect of thermal dehydration and rehydration on Na-magadiite structure. Colloid Interf Sci 2009; 330: 392-398
  10. Vlaev L, Nedelchev N, Gyurova K, Zagorcheva M. A comparative study of non-isothermal kinetics of decomposition of calcium oxalate monohydrate. J Anal Appl Pyrol 2008; 81(2):253- 262
  11. Vecchio S, Di Rocco R, Ferragina C, Materazzi S. Thermal and kinetic study of dehydration and decomposition processes for copper intercalated gamma-zirconium and gamma-titanium phosphates. Thermochim Acta 2005; 435(2): 181-187
  12. Ekmekyapar A, Baysar A, Künkül A. Dehydration kinetics of tincal and borax by thermal analysis. Ind Eng Chem Res 1997; 36(9): 3487-3490
  13. Biyikoglu A, Yeksan E. Production of anhydrous borax borax pentahydrate. Int J Hydrogen Energ 2008; 33(23): 7103-7109
  14. Waclawska I. Thermal decomposition of borax. Therm Anal Calorim 1995; 43: 261-269
  15. Şahin Ö, Genli N, Özdemir M. New method for production anhydrous puffed borax. Chem Eng Process 2005; 44 (1):1-6
  16. Coats AW, Redfern JP. Kinetic parameters from thermogravimetric data. Nature 1964; 20: 68-69
  17. Doyle CD. Estimating isothermal life from thermogravimetric data. J Appl Polym