Artículos de revistas
Thermal Stability Of Products From Self-irradiated Ca14co3
Registro en:
International Journal Of Radiation Applications And Instrumentation. Part. , v. 37, n. 2, p. 363 - 365, 1991.
13590197
10.1016/1359-0197(91)90155-U
2-s2.0-50749134555
Autor
Albarran G.
Collins K.E.
Collins C.H.
Institución
Resumen
Five 14C-labelled organic acids are obtained from the self-radiolysis of high specific activity Ca14CO3. The yields of all products decrease upon isothermal annealing at 548 K. Upon isochronal annealing (1 h), no significant changes occur up to 423 K. In the temperature interval between 476 and 673 K, the yields of formic, oxalic and glyoxylic acids decrease similarly, suggesting that they have the same precursor: the CO- 2 radical. The isochronal annealing behaviours of the precursors of glycolic and acetic acids are more complex and involve other solid state species. © 1991. 37 2 363 365 Albarrán, Collins, Ion-moderated partition chromatographic determination of Ca14CO3 and Ba14CO3 self-radiolysis products (1987) Journal of Chromatography A, 395, p. 623 Albarrán, Collins, Collins, Formation of organic products in self-radiolysed calcium carbonate (1987) Journal of Molecular Evolution, 25, p. 12 Bellis, Holley, Jr., An electron spin resonance study of a free radical reaction in crystals of sodium formate (1965) Molecular Physics, 10, p. 33 Collins, Collins, Annealing of tritium-labelled products in reactor-irradiated lithium carbonate (1977) J. Inorg. Nucl. Chem., 39, p. 745 Collins, Farris, da Costa Perreia, Collins, Organic products observed in self-radiolysed Ba14CO3 (1982) Memorias del IV Simpósio sobre Quimica Nuclear, Radioquimica y Quimica de Radiaciones, p. 67. , UNAM, Mexico Hartman, Hisatsune, Infrared spectrum of carbon dioxide anion radical (1966) J. Chem. Phys., 44, p. 1913 Head, Holley, Jr., The thermal decomposition of scandium formate and oxalate (1964) J. Inorg. Nucl. Chem., 26, p. 525 Hisatsune, Adl, Beahm, Kempf, Matrix isolation and decay kinetics of carbon dioxide and carbonate anion free radicals (1970) J. Phys. Chem., 74, p. 3225 Overnall, Whiffen, Electron spin resonance and structure of the CO- 2 radical ion (1961) Molecular Physics, 4, p. 135 Pfeiffer, Rank, Tschurlovits, A method for counting 14C as CaCO3 in a liquid scintillator with improved precision (1981) Int. J. Appl. Radiat. Isot., 32, p. 665 Sharman, McCallum, Chemical effects of the C12 (γ,n)C11 reaction in anhydrous sodium carbonate (1955) J. Am. Chem. Soc., 77, p. 2989