Thermal Behavior of Aqueous Solutions of Hydroxylamine During Isothermal and Isoperibolic Decomposition in a Closed System

详细信息    查看全文

• 作者：Maria I. Papadaki ; Eleni Pontiki ; Lijun Liu ; William J. Rogers ; M. Sam Mannan
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2009
• 出版时间：September 10, 2009
• 年：2009
• 卷：54
• 期：9
• 页码：2616-2621
• 全文大小：221K
• 年卷期：v.54,no.9(September 10, 2009)
• ISSN：1520-5134

文摘

Hydroxylamine (HA) has been independently involved in several tragic accidents, which incurred numerous fatalities and injuries. Following these incidents, adiabatic calorimetry and computational chemistry research was conducted, suggesting potential reaction pathways of HA decomposition, but the mechanism of HA behavior still has not been completely understood. In the present work, the thermal decomposition of hydroxylamine was studied via isothermal and isoperibolic calorimetric measurements in a glass and in a metal reactor, respectively. Identification of stable intermediates, like ammonia, nitrates, or nitrites during the course of the reaction did not provide any conclusive results. The calorimetric measurements presented here show condition-dependent endothermic and exothermic reaction steps that are consistent with previous findings of computational chemistry. These findings corroborate previously reported results, according to which the NH²⁻ moiety may trigger reaction runaway.