- Tytuł:
- The Catalytic Effect of Mn2O3 Nanoparticles on the Ignition Reaction of Pyrotechnic of Ammonium Nitrate(V)/Thiourea
- Autorzy:
-
Pouretedal, H. R.
Ravanbod, M. - Powiązania:
- https://bibliotekanauki.pl/articles/358302.pdf
- Data publikacji:
- 2017
- Wydawca:
- Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
- Tematy:
-
ammonium nitrate(V)
thiourea
non-isothermal kinetic
ignition reaction
Mn2O3 nanoparticles - Opis:
- The non-isothermal TG/DSC technique has been used to study the kinetic triplet and heat of ignition reaction of ammonium nitrate(V) (AN)/thiourea (TU) pyrotechnic in the presence of Mn2O3 catalyst nanoparticles under an argon atmosphere at different heating rates (5 K·min−1, 10 K·min−1, 15 K·min−1 and 20 K·min−1). The activation energies for the ignition reaction of AN/TU were calculated using the non-isothermal isoconversional Kissinger-Akahira-Sunose (KAS) and Friedman equations for different conversion fraction (α) values in the range 0.1-0.9. The pre-exponential factor and kinetic model were determined by means of the compensation effect and the selected model was confirmed by a nonlinear fitting method. The average activation energies in the absence and presence of 5 wt.% Mn2O3 nanoparticles were 110.1 kJ·mol−1 to 117.3 kJ·mol−1 for the reaction model A3 (g(α) = [−ln(1−α)]1/3), and 86.5 kJ·mol−1 to 101.8 kJ·mol−1 for the reaction model A4 (g(α) = [−ln(1−α)]1/4). The evolved heat (ΔH) of ignition reaction in the presence of Mn2O3 was about 4 times that in the absence of the nano-sized Mn2O3.
- Źródło:
-
Central European Journal of Energetic Materials; 2017, 14, 2; 430-447
1733-7178 - Pojawia się w:
- Central European Journal of Energetic Materials
- Dostawca treści:
- Biblioteka Nauki
Artykuł