Isoconversional approach for the non-isothermal decomposition kinetics of guanylurea dinitramide (GUDN)

Santhosh, G.; Soumyamol, Panthaplackal Bhaskaran; Sreejith, M.; Reshmi, S.

doi:10.1016/j.tca.2016.03.019

Cited by 14 publications

(5 citation statements)

References 19 publications

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“… 8 These different results were attributed to the experimental conditions and processing methods employed. 9 The thermal decomposition mechanism of FOX-12 was elucidated by theoretical calculations coupled with online photoionization mass spectrometry and TG-DSC-IR-MS. 10 The thermal decomposition of FOX-12 itself has been extensively studied. The development of new weapon systems has different requirements for the burn rate of the composite solid propellant, and the regulation of the burning rate usually adopts the method of adding a burning rate catalyst to adjust the thermal decomposition performance of the oxidant, thereby affecting the burning rate.…”

Section: Introductionmentioning

confidence: 99%

“…The kinetic parameters with a temperature-programmed mode were applied, and the E a value of the exothermic decomposition reaction of FOX-12 is calculated to be 220.20 kJ·mol –1 . These different results were attributed to the experimental conditions and processing methods employed . The thermal decomposition mechanism of FOX-12 was elucidated by theoretical calculations coupled with online photoionization mass spectrometry and TG-DSC-IR-MS .…”

Section: Introductionmentioning

confidence: 99%

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Catalytic Effect of Ferrocenyl Energetic Catalysts for N-Guanylurea Dinitramide (GUDN or FOX-12) Decomposition

Jiang¹,

Fu²,

Jiang³

et al. 2022

ACS Omega

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Four N , N -dimethylaminomethylferrocene polynitrogen catalysts were applied to the thermal decomposition of FOX-12, and their catalytic effect on FOX-12 was investigated by TG-DSC. The kinetic parameters and kinetic model of the mixed system were revealed by the Kissinger method, Freidman method, and combined kinetic analysis. The results showed that MAFcTAZ is the catalyst with the strongest effect on FOX-12, the decomposition peak temperature of FOX-12 is reduced, and the decomposition weight loss is higher than those for other catalysts, which prove that the decomposition of FOX-12 is more thorough under the catalysis of MAFcTAZ. The introduction of the four catalysts reduced the thermal decomposition peak temperature of FOX-12. MAFcTAZ was the most active catalyst for the decomposition of FOX-12, and the maximum heat release of catalyzing the decomposition of FOX-12 can reach 1236.76 J·g –1 . The activation energy ( E a ) of FOX-12 decomposition decreased from 217.91 to 128.19, 137.85, 157.65, and 151.91 kJ·mol –1 under the effect of MAFcNO 3 , MAFcPA, MAFcNTO, and MAFcTAZ. The Freidman analysis illustrated that MAFcTAZ reduced the activation energy during the entire decomposition process of FOX-12. The physical model of the decomposition reaction of FOX-12 transformed from the random nucleation and two-dimensional growth of nuclei model (A2) to the random scission model (L2) in the presence of MAFcNO 3 and two-dimensional diffusion (D2) under the effect of MAFcPA, MAFcNTO, and MAFcTAZ. By analyzing the molecular structures, MAFcTAZ has a higher iron content and nitrogen content, which are the essence of its excellent catalytic performance. From the perspective of interaction energy, the strong catalytic effect of MAFcTAZ is attributed to its large interaction energy with FOX-12 by energy decomposition analysis.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Catalytic Effect of Ferrocenyl Energetic Catalysts for N-Guanylurea Dinitramide (GUDN or FOX-12) Decomposition

Jiang¹,

Fu²,

Jiang³

et al. 2022

ACS Omega

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“…In principle, reactions involving parallel reactions with different activation energies and temperature dependence may not fit into the isoconversional method. However, these methods have been used successfully for energetic materials like HMX, ammonium dinitramide (ADN), guanylurea dinitramide (GUDN) and ammonium perchlorate (AP) [38, 41, 42]. Highly exothermic nature of decomposition, autocatalytic effects and multiple overlapping steps during decomposition make these compounds unique and application of many of these methods need to be scrutinized closely for its appropriateness on the thermal and catalytic decomposition of HAN.…”

Section: Introductionmentioning

confidence: 99%

“…Derivation of kinetic parameters using isoconversional and different model fitting methods applying the data generated from thermal analysis studies is widely accepted and have been used successfully in the decomposition of many materials including energetic materials [37–43]. In principle, reactions involving parallel reactions with different activation energies and temperature dependence may not fit into the isoconversional method.…”

Section: Introductionmentioning

confidence: 99%

Kinetics and Mechanism of Thermal and Catalytic Decomposition of Hydroxylammonium Nitrate (HAN) Monopropellant

Agnihotri

Oommen

2021

Propellants Explo Pyrotec

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Hydroxylammonium nitrate (HAN) monopropellant with its low sensitivity, volatility and toxicity, not only promises a safer substitute to hydrazine but also offers a higher specific impulse and a positive oxygen balance. This study primarily explores the decomposition mechanism and underlying kinetics for a newly developed cerium oxide‐based catalyst. The chemical kinetics involved in the thermal and catalytic decomposition was examined through an isoconversional method using thermogravimetric analysis (TG) data. The activation energy (Ea) was evaluated using differential isoconversional method (Friedman's method) and advanced integral isoconversional method (Popescu‐Ortega's method). To find frequency factor, compensation effect method (ACE) and intercept method (A0) were used. Advanced integral method could not provide realistic kinetic parameters while differential method predicted values similar to reported values for thermal decomposition. The values obtained for thermal decomposition were found matching with reported values obtained by other techniques which validated the methodology adopted. The reaction mechanism for both thermal and catalytic decomposition were proposed based on evolved gas analysis. The mechanism proposed was able to describe the variable kinetic parameters extracted from isoconversional method. Overall Ea of thermal decomposition of HAN was ∼95 kJ/mol. The decomposition over ceria‐based catalyst was distributed over three stages namely inception, peak and decay with Ea of ∼33 kJ/mol, ∼170 kJ/mol and ∼130 kJ/mol, respectively. Under identical conditions, iridium‐based catalyst show two decomposition stages with Ea of ∼65 kJ/mol and ∼120 kJ/mol while final stage being evaporation of HNO3. The ceria catalyst favoured N2 formation, increased decomposition of HNO3 and enhanced decomposition enthalpy.

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“…Furthermore, MS data allow the identification of the molecular weights of evolved gases, while IR spectra show the chemical structures. For these reasons, TG-MS and TG-IR studies have been widely conducted to investigate the reaction mechanisms of various energetic materials, including ADN and its mixtures [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31]. Matsunaga et al [6,7,9] conducted a thermal analysis of ADN/MMAN/urea mixtures using differential scanning calorimetry (DSC), thermogravimetry-differential thermal analysis-infrared spectroscopy (TG-DTA-IR) and mass spectrometry (MS) and demonstrated that these materials decompose to generate various gases, including nitrous oxide (N2O), nitrogen dioxide (NO2), isocyanic aid (HNCO), ammonia (NH3), carbon dioxide (CO2) and water (H2O).…”

Section: Introductionmentioning

confidence: 99%

Thermal and evolved gas analyses of decomposition of ammonium dinitramide-based ionic liquid propellant using TG–DSC–HRTOFMS

Izato

Shiota

Satoh³

et al. 2019

J Therm Anal Calorim

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Thermal and evolved gas analyses were carried out to assess the decomposition of an ionic liquid propellant consisting of ammonium dinitramide (ADN), methylammonium nitrate (MMAN) and urea, using thermogravimetry-differential scanning calorimetry-high resolution time of flight mass spectrometry (TG-DSC-HRTOFMS). This technique simultaneously assesses the thermal and evolved gas behavior and is able to distinguish between products having similar massto-charge ratios, based on accurate mass determinations. ADN/MMAN and ADN/MMAN/urea mixtures were found to decompose to form NH3, H2O, HCN, CO, N2, CH2O, CH3NH2, HNCO, CO2, N2O and HNO3, and possible reaction schemes for the decomposition processes were developed. Interactions between ADN and MMAN appear to enhance the generation of N2, while the presence of urea reduces the net exothermic heat of reaction due to the endothermic pyrolysis reaction of urea to NH3 and HNCO, followed by the reaction HNCO + H2O → NH3 + CO2.

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Isoconversional approach for the non-isothermal decomposition kinetics of guanylurea dinitramide (GUDN)

Cited by 14 publications

References 19 publications

Catalytic Effect of Ferrocenyl Energetic Catalysts for N-Guanylurea Dinitramide (GUDN or FOX-12) Decomposition

Catalytic Effect of Ferrocenyl Energetic Catalysts for N-Guanylurea Dinitramide (GUDN or FOX-12) Decomposition

Kinetics and Mechanism of Thermal and Catalytic Decomposition of Hydroxylammonium Nitrate (HAN) Monopropellant

Thermal and evolved gas analyses of decomposition of ammonium dinitramide-based ionic liquid propellant using TG–DSC–HRTOFMS

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