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- W2936719223 abstract "The thermal decomposition of ammonium perchlorate AP with electrochemically exfoliated graphene flakes (EGF) was studied at different heating rates in nitrogen and the combustion behavior of AP/EGF propellant was evaluated. The exothermic reaction kinetics were studied by simultaneous thermal analysis (STA) in non-isothermal conditions and compare with the thermal decomposition of pure AP applying the same experimental conditions. Using the Kissinger method, the calculated activation energies Ea for the low- and high-temperature exothermic reactions were 87 and 198 kJ/mol for pure AP, contrasting with 91 and 55 kJ/mol obtained from AP with 5 wt% EGF. From our experimental activation energy values together with reported and calculated band gaps Eg, it was found the empirical relationship: Ea=Ea0−Eac−Ea01+1.5Eg/E0n/2where Ea0 corresponds to the activation energy associated with the high-temperature thermal decomposition of pure AP, Eac is the activation energy associated to the high-temperature thermal decomposition of AP-EGF, E0 = 2.7 eV is the catalyst band gap threshold required to activate the electron transfer mechanism and n = 6 is the exponential factor associated to pure AP." @default.
- W2936719223 created "2019-04-25" @default.
- W2936719223 creator A5070845944 @default.
- W2936719223 date "2019-04-16" @default.
- W2936719223 modified "2023-10-14" @default.
- W2936719223 title "Thermal decomposition of ammonium perchlorate/exfoliated-graphene and the relationship between activation energy and band gap" @default.
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- W2936719223 doi "https://doi.org/10.1080/07370652.2019.1601793" @default.
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