Abstract
The effect of γ-irradiation (1.0–4.0 MGy) on the thermal decomposition of barium oxalate hemihydrate has been studied at 723K by a gas evolution method. Decomposition isotherms of unirradiated and irradiated crystals are characterized by (i) rapid initial gas evolution, (ii) acceleratory and (iii) decay stages. Irradiation enhances the rate of decomposition without altering the mechanism of the process, the effect being higher at higher irradiation doses. The analysis of the data reveal that the two-dimensional phase boundary reaction model gives the best fit to the results.
Similar content being viewed by others
References
A. S. BHATTI, D. DOLLIMORE, Thermochim. Acta, 59 (1984) 231.
C. G. R. NAIR, K. N. NINAN, Thermochim. Acta, 23 (1978) 161; Radiat. Phys. Chem., 30 (1979) 25.
H. TANAKA, S. OHSHIMA, S. ICHIBA N. NEGITA, Thermochim. Acta, 48 (1981) 137.
H. TANAKA, S. OHSHIMA, N. NEGITA, Thermochim. Acta, 53 (1982) 387.
P. O'BRIEN, S. D. ROSS, Thermochim. Acta, 53 (1982) 195.
A. M. GADALLA, Thermochim. Acta, 74 (1984) 255.
A. R. SALVADOR, E. C. CALVO, J. M. NAVARRO, Thermochim. Acta, 87 (1985) 163.
D. DOLLIMORE, D. L. GRIFFITHS, J. Therm. Anal., 2 (1970) 229.
G. BRUNHS, Chem. Zentralbl., 11 (1916) 454.
B. V. STRIZHKOV, A. V. LAPISTSKII, L. G. VLASOV, Russ. J. Inorg. Chem., 7 (1962) 1220.
L. WALTER-LEVY, J. LANIEPCE, C.R. Acad. Sci., 258 (1964) 217.
J. C. MUTIN, G. WATELLE-MARION, C.R. Acad. Sci., Ser. C, 266 (1968) 315.
J. JACH, The Thermal Decomposition of Irradiated Materials, in: G. J. DIENES (Ed.), Studies in Radiation Effects on Solids, Vol. 2, Gordon and Breach, New York, 1967, p. 151.
D. S. BILLINGTON, H. J. CRAWFORD, Jr., Radiation Damage in Solids, Princeton University Press, Princeton, NJ, 1961.
V. V. BOLDYREV, M. BULENS, B. DELMAN, The Control of the Reactivity of Solids, Elsevier, Amsterdam, 1979.
S. N. BASAHEL, A. Y. OBAID, El-H. M. DIEFALLAH, Radiat. Phys. Chem., 29 (1987) 447.
S. D. BHATTAMISRA, S. R. MOHANTY, Radiat. Effect, 23 (1976) 41.
D. A. YOUNG, Decomposition of Solids, Pergamon Press, Oxford, 1966.
W. E. BROWN, D. DOLLIMORE, A. K. GALWEY, Comprehensive Chemical Kinetics, Vol. 22. C. H. BAMFORD, C. P. H. TIPPER (Eds), Elsevier, Amsterdam, 1980, p. 167; 218.
D. DOLLIMORE, Thermochim. Acta, 117 (1987) 331.
J. FUJITA, K. NAKAMOTA, M. KABOYASHI, J. Phys. Chem., 61 (1957) 1014.
W. L. NG, Aust. J. Chem., 28 (1975) 1169.
A. GLASNER, L. WEIDENFELD, J. Am. Chem. Soc., 74 (1952) 2467.
H. F. CORDES, S. R. SMITH, J. Phys. Chem., 78 (1974) 768.
J. JACH, Reactivity of Solids, J. H. DE BOER, (Ed.), Elsevier, Amsterdam, 1961, p. 334.
J. JACH, J. Phys. Chem. Solids, 24 (1963) 63.
R. D. EVANS, The Atomic Nucleus, McGraw-Hill, New York, 1967.
G. J. DIENES, G. H. VINEYARD, Radiation Effects in Solids, Interscience, New York, 1957.
F. SEITZ, Rev. Mod. Phys., 26 (1954) 7.
J. H. O. VERLEY, Nature, 174 (1954) 886.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Bose, S., Sahu, K.K. & Bhatta, D. Effect of gamma-irradiation on the thermal decomposition of barium oxalate hemihydrate. Journal of Radioanalytical and Nuclear Chemistry, Articles 181, 441–446 (1994). https://doi.org/10.1007/BF02037650
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02037650