MoS2 Stabilize Ti3C2 MXene for Excellent Catalytic Effect of Thermal Decomposition of Ammonium Perchlorate

Vacuum, Journal Year: 2024, Volume and Issue: 231, P. 113812 - 113812

Published: Nov. 6, 2024

Language: Английский

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Enhanced catalytic behavior of La2O2CO3/Co3O4 composite for thermal decomposition of ammonium perchlorate

Journal of Physics and Chemistry of Solids, Journal Year: 2023, Volume and Issue: 182, P. 111580 - 111580

Published: July 26, 2023

Language: Английский

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Electrochemical Synthesis of the Energetic Combustion Catalyst Co(BODN)·9H₂O and Its Catalytic Effect on Ammonium Perchlorate Thermal Decomposition

Langmuir, Journal Year: 2023, Volume and Issue: 39(48), P. 17498 - 17512

Published: Nov. 20, 2023

Safe, efficient, and green synthetic energetic combustion catalysts are of great importance for the application ammonium perchlorate (AP) in solid propellants. In this study, a novel, simple, electrochemical method synthesizing was designed implemented to successfully synthesize Co(BODN)·9H2O (BODN = [2,2'-bi{1,3,4-oxadiazole}]-5,5'-dinitramide), novel catalyst. The target products were characterized via single-crystal X-ray diffraction, powder Fourier transform infrared spectroscopy, optical microscopy, scanning electron differential calorimetry, thermogravimetric analysis. Results reveal that crystallizes triclinic P1̅ space group has density 1.836 g cm-3. size crystal increases gradually with increase reaction current prolongation time, respectively. However, change time does not affect form. addition, content, peak temperature high-temperature decomposition (HTD) apparent activation energy AP/Co(BODN)·9H2O decrease, heat release during thermal increases. HTD AP/Co(BODN) 9H2O (10%) decrease by 97.9 °C 94.2 kJ·mol-1, respectively, compared those pure AP, 1613 J·g-1. Furthermore, propellant containing burning rate flame 8.15 mm s-1 458.44 °C, Real-time spectroscopy reveals CoO catalyzes AP mainly promoting transfer accelerate oxidation NH3 conversion N2O NO. brief, work provides new insights into catalysts. Moreover, synthesized through exhibits considerable prospects improving performance

Language: Английский

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Preparation of Carbon Nanotube-Filled Bismuth/Tin Green Nanocomposites and Their Efficient Catalytic Activity in the Thermal Decomposition of Ammonium Perchlorate

Published: Jan. 1, 2023

The practical utility of bismuth and tin compounds, as promising green combustion catalysts, is constrained by their substantial particle agglomeration. Herein, we reported a straightforward ultrasonication-assisted method to incorporate compounds into the inner spaces carbon nanotubes (CNTs), giving CNTs-confined (tin) compounds. as-prepared nanocomposites were structurally completely characterized. electrochemical property investigations showed that introduction increases catalytic active sites inhibits nanoparticle agglomeration effectively. theoretical calculations revealed synergistic effects between Bi2O3 can improve efficiency electron transfer in Bi(NO3)3@A-CNTs(M1) composite. evaluation results performance on ammonium perchlorate (AP) pyrolysis suggested adding 5 wt. % DBT@A-CNTs(M1) (DBT = Dibutyltin dichloride) AP brought about more concentrated thermal decomposition process, advancing peak high-temperature stage from 420.4 °C 328.9 325.9 °C, respectively, boosting its heat release 976.42 J·g-1 2251.2 2452.03 J·g-1, respectively. studies degradation mechanism AP, probed kinetics, in-situ solid FTIR TG-FTIR-MS, concluded critical steps ClO4- NH4+ O2 O2- accelerated interaction formed nanoparticles nanotubes, relative contents stable gases, ultimately promoting pyrolysis. A tentative finally proposed.

Language: Английский

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Preparation of Mxene-Type C-Tio2 Nanocatalysts for Enhancing the Combustion Performance of Ap/Htpb Propellants

Published: Jan. 1, 2024

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Language: Английский

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