Exotic New Oxides of Plutonium Found by Using Gas Thermochromatography
| Autor: | V. P. Domanov, Yu. V. Lobanov, G.V. Buklaeov |
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| Rok vydání: | 2002 |
| Předmět: | |
| Zdroj: | Journal of Nuclear Science and Technology. 39:579-584 |
| ISSN: | 1881-1248 0022-3131 |
| DOI: | 10.1080/00223131.2002.10875535 |
| Popis: | The volatility of compounds formed during heating of trace quantities of 238Pu or 239Pu in a stream of helium and oxygen mixture was studied by gas thermochromatography. Under certain conditions plutonium forms four adsorption zones with the centers at 450±25°C, 250±25°C, 130±50°C and -105±25°C in quartz TC columns. For the interpretation of the results, model experiments with carrier-free radioisotopes of Os, Re, Ru and Tc were performed. It was found that in the stream of He with a small amounts of O2, products were adsorbed at 450-500°C and at 250-300°C in the form of dioxides and trioxides. The results of the thermochromatographic (TC) isolation of volatile oxygen-containing compounds of U and 249Cf are also presented. Based on the data obtained with Pu, we assume that the first adsorption zone (450±25°C) is due to PuO2 formation, the second one is due to PuO3 formation and the third may be due to formation of a plutonium acid H2PuO4 (proposed formula). Comparison of the adsorption zone of OsO4 with t... |
| Databáze: | OpenAIRE |
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