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Received January 21, 2011
Accepted March 28, 2011
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Thermal decomposition kinetics of sodium perborate tetrahydrate to sodium metaborate by using model-fitting and model-free methods
Department of Chemical Engineering, Engineering Faculty, Siirt University, Siirt 56000, Turkey
halildemir@siirt.edu.tr
Korean Journal of Chemical Engineering, October 2011, 28(10), 2002-2008(7), 10.1007/s11814-011-0081-x
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Abstract
Model-free and model-fitting methods have been applied to data for nonisothermal and isothermal decomposition of sodium perborate tetrahydrate to sodium metaborate. The kinetic triplet (f(a), A and E) of sodium perborate tetrahydrate was found by model fitting method defined with a single step reaction, which has an excellent fit for nonisothermal data and obeys different kinetic models and yields highly uncertain values of Arrhenius parameters. The isothermal and nonisothermal data for thermal decomposition of sodium perborate tetrahydrate to sodium perborate monohydrate and sodium metaborate were evaluated by model-free isoconversional method. The complex nature of multi-step process of sodium perborate tetrahydrate to sodium metaborate was more easily indicated by using wide temperature range in nonisothermal isoconversional method.
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References
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Kanturk A, Sari M, Piskin S, Korean J. Chem. Eng., 25(6), 1331 (2008)
Beker UG, Recepoglu O, Bulutcu N, Thermochim. Acta, 235(2), 211 (1994)
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Eymir C, Okur H, Thermochim. Acta, 428(1-2), 125 (2005)
Celik MS, Suner F, Thermochim. Acta., 245, 16 (1995)
Dugua J, Cuer JP, Eur. Patent Appl., EP153, 894 (1985)
Sahin O, Bulutcu AN, Chem. Eng. Sci., 54(1), 115 (1999)
Sahin O, Cennetkusu ES, Dolas H, Ozdemir M, Thermochim. Acta, 440(1), 7 (2006)
Brown ME, Dollimore D, Galwey AK, Reaction in the Solid State Comprehensive Chemical Kinetic, Vol. 22, Elsevier, Amsterdam. (1980)
Piloyan GO, Ryabchikov ID, Novikova OS, Nature., 212, 1229 (1966)
Coats AW, Redfern JP, Nature., 201, 68 (1964)
Carr NJ, Galwey AK, Thermochim. Acta., 79, 323 (1984)
Friedman H, J. Polym. Sci., 6, 183 (1963)
Ozawa T, Bul. Chem. Soc. Jpn., 38, 1881 (1965)
Vyazovkin S, Wight CA, Thermochim. Acta., 340, 53 (1999)
Heal GH, Thermochim. Acta., 340, 69 (1999)
Senum GI, Yang RT, J. Therm. Anal., 16, 1033 (1977)
Guan CX, Li LQ, Chen DH, Gao ZY, Sun WB, Thermochim. Acta, 413(1-2), 31 (2004)
Knippschild G, Schurter HS, Process for the production of sodium perborate, US Patent, 3,985,862 (1976)
Myerson AS, Handbook of industrial crystallization, Butterworth-Heinemann (1993)
Zoller U Editor-in chief, Handbook of detergents, Part F: Production, Taylor Francis Group, London (2009)
ISO 3424, Sodium perborate for industrial use - determination of bulk density (1975)
Mu P, Wang RF, Zhao L, Thermochim. Acta, 296(1-2), 129 (1997)
Vyazovkin S, J. Therm. Anal., 64, 829 (2001)
Vyazovkin S, Thermochim. Acta, 355(1-2), 155 (2000)
Khawam A, Flanagan DR, Thermochim. Acta, 436(1-2), 101 (2005)
Vyazovkin S, Lesnikovich AI, Thermochim. Acta., 165, 273 (1990)
Vyazovkin S, Goryachko VI, Lesnikovich AI, Thermochim. Acta., 197, 41 (1992)
Vyazovkin S, J. Therm. Anal.Cal., 83, 45 (2006)
