کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
587123 878257 2006 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Calorimetric behaviors of N2H4 by DSC and superCRC
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
Calorimetric behaviors of N2H4 by DSC and superCRC
چکیده انگلیسی

The objective of this study is to obtain information about the thermal decomposition behaviors of hydrazine (N2H4) caused by metals, using differential scanning calorimeter (DSC) and SuperCRC. The DSC measurements revealed that the exothermic reactions of N2H4 were caused by the reaction conditions such as the type of cells; the TDSC with a gold pan is 485.2 K and that with a glass capillary is 620.5 K. Besides, the activation energy of the thermal decomposition of N2H4, calculated from the Kissinger and Ozawa methods, were found to be about 38±2 kJ mol−1 in the gold pan and 141±8 kJ mol−1 in the glass capillary. Moreover, a heat flow profile was observed with SuperCRC during the mixing of N2H4 and the metal ion solution at 298 K. The maximum heat flow was related to the metal ion oxidative characters. The higher oxidative characters would provide a faster acceleration for the exothermic behavior than the lower oxidative ions. Based on this study, Mn(VII) and Cr(VI) were considered to exhibit strongly oxidative characteristics during mixing with N2H4.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Loss Prevention in the Process Industries - Volume 19, Issue 5, September 2006, Pages 452–458
نویسندگان
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