Calorimetric studies on thermal decomposition of tri isoamyl phosphate-nitric acid systems

详细信息	查看全文 | 推荐本文 |

• 作者：Tarun Kumar Sahoo ; K. Chandran ; P. Muralidaran ; V. Ganesan ; T.G. Srinivasan¹ ; ^{tgs@igcar.gov.in}
• 关键词：Tri isoamyl phosphate ; Nitric acid ; Decomposition ; Enthalpy ; Activation energy ; Red oil
• 刊名：Thermochimica Acta
• 出版年：2012
• 期刊代码：110_00406031
• 类别：ch
• 出版时间：20 April, 2012
• 卷：534
• 期：Complete
• 页码：9-16
• 文件大小：674 K

摘要

The thermal decomposition of tri isoamyl phosphate (TiAP), nitric acid-solvates namely, TiAP路1.1HNO₃ and TiAP路2.2HNO₃, solutions of TiAP in n-dodecane (n-DD) and in pentamethylheptane (PMH) with nitric acid were studied using an adiabatic calorimeter in air under closed and opened conditions employing heat-wait-search mode. Neat TiAP was found to be stable up to 535 K and decompose above this temperature. The acid-solvates were found to decompose exothermically at 384 and 365 K, respectively and caused high rise in temperature and pressure, producing non-condensable gasses such as N₂O, CO₂ and CO and a blackish residue. Decomposition enthalpies for TiAP路1.1HNO₃ and TiAP路2.2HNO₃ were derived and found to be 鈭?65.1 卤 2.4 and 鈭?37.0 卤 6.2 kJ mol^鈭?, respectively. Kinetic parameters have been derived wherever possible. Heat capacities of acid-solvates have been measured at constant pressure in the temperature range 305-340 K using heat flux type differential scanning calorimeter and are reported in this paper.