Thermal behavior pattern of tributyl phosphate under adiabatic conditions

Autor:	Mahadevan Surianarayanan, Hariharan Seshadri, V. S. Smitha, Asit Baran Mandal
Rok vydání:	2012
Předmět:	Exothermic reaction Inorganic chemistry Thermal decomposition Condensed Matter Physics Decomposition Calorimeter Nuclear reprocessing chemistry.chemical_compound chemistry Nitric acid Tributyl phosphate Physical and Theoretical Chemistry Adiabatic process Nuclear chemistry
Zdroj:	Journal of Thermal Analysis and Calorimetry. 111:849-856
ISSN:	1572-8943 1388-6150
Popis:	Violent decomposition of Tributyl Phosphate (TBP), a widely employed extractant in the Plutonium Uranium Extraction process of nuclear fueling reprocessing plants in the presence of Nitric acid at temperatures in excess of 130 °C is a matter of concern in serious accidents including in the Savannah River (USA) and Tomsk (Russia). The thermal behavior of TBP under adiabatic conditions employing the world’s benchmark adiabatic calorimeter, the Accelerating Rate Calorimeter is examined. TBP shows multiple self heating exothermic activities with the onset of primary exotherm at 250 °C. The exothermic activity is accompanied by considerable pressure rise. The thermal decomposition of TBP is found to follow first order Arrhenius kinetic model. TBP loses about 70% of its chemical moieties as volatile matter during the exothermic decomposition. Spectroscopic methods are used to elucidate the degradation pathway.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::691fce5f8b34f29aae28f0b69e6a1f5f https://doi.org/10.1007/s10973-012-2197-6 Zobrazit plný text záznamu Full text from SpringerLink