pulvérisateur pour perchlorate d ammonium.

Effect of the microporous structure of ammonium perchlorate …

Ammonium perchlorate (AP) is the most commonly used oxidant in solid propellants [5], and it usually accounts for as much as 50%–70% of the total due to its high oxygen content, good thermal and chemical stability, and gaseous decomposition products. The thermal behaviour and combustion characteristics of AP have a great influence on the ...

Ammonium perchlorate

IUPAC Standard InChIKey: BGZZNVNAKMESMV-UHFFFAOYSA-N Copy CAS Registry Number: Chemical structure: This structure is also available as a 2d Mol file; …

Catalytic activities of two different morphological nano …

In order to investigate the catalytic activity of nano-MnO 2 on the thermal decomposition of ammonium perchlorate, two different shapes of nano-MnO 2 (sea-urchin and linear) were prepared by the hydrothermal method with MnSO 4 ·H 2 O and Na 2 S 2 O 8, MnSO 4 ·H 2 O and (NH 4) 2 S 2 O 8, respectively.X-ray diffraction, scanning electron …

Preparation of Combined Ammonium Perchlorate/Ammonium Nitrate Samples

Ammonium perchlorate (AP) and ammonium nitrate (AN) are used as propellant oxidizers. In this study, the preparation of combined AP/AN particles by a freeze-drying technique was attempted to improve the burning characteristics and determine the combustion wave mechanism of composite propellants. AN adhered to AP particles …

Propergol composite à perchlorate d'ammonium

Les sels alcalins ou alcalino-terreux affectent la cinétique de décomposition du perchlorate d'ammonium, et ce à faible concentration (de 1 à 2 % de la masse du propergol), mais ils sont inefficaces sur les poudres chargées d'aluminium.

Evaluating physical properties of the orthorhombic crystal …

Orthorhombic ammonium perchlorate (AP) is the most commonly utilized crystalline oxidizer in solid propellants and has been the subject of significant ongoing research efforts since the mid-20th century. 1 Standard composite propellants utilized in defense applications typically contain 60%–72% AP, up to 22% aluminum powder, and 8%–16% …

Oriented Assembled Prussian Blue Analogue

The results show that unexpected thermal decomposition behavior can be achieved by limiting AP(ammonium perchlorate) to the framework of CoFe-PBA. The high temperature decomposition stage of AP can be advanced to 283.6 °C and the weight loss rate can reach 390.03% min −1.

The effects of Al (111) and Al2O3/Al (111) surfaces on the

DOI: 10.1016/j.mcat.2023.113712 Corpus ID: 265486602; The effects of Al (111) and Al2O3/Al (111) surfaces on the decomposition of ammonium perchlorate: A DFT-D study @article{Yang2024TheEO, title={The effects of Al (111) and Al2O3/Al (111) surfaces on the decomposition of ammonium perchlorate: A DFT-D study}, author={Qi Yang and …

Combustion Response of Ammonium Perchlorate …

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Laser Ignition of Ammonium Perchlorate/Aluminum …

A two-component composition of ammonium perchlorate and nanosized aluminum powder can be ignited by millisecond Nd laser radiation. However, the mixture exposed to laser radiation pulse through polymethyl methacrylate (PMMA) capsule demonstrates less sensitivity when compared to ignition of the uncovered sample. Such behavior is …

Refining the effects observed in a developmental

A developmental neurotoxicity study was conducted to generate additional data on the potential functional and morphological hazard to the central nervous system caused by ammonium perchlorate in offspring from in utero and lactation exposure. Sprague-Dawley rats (23 to 25/group) were given co …

Combustion of Ammonium Perchlorate: New Findings

The combustion characteristics of ammonium perchlorate (AP) monopropellant have been discussed. Both experimental and computational tools were utilized to explore AP combustion. Three different methods were used to determine the …

Ammonium perchlorate

Introduction. Ammonium perchlorate, NH 4 ClO 4, a colorless solid, 1 is orthorhombic crystalline in structure. Ammonium perchlorate is soluble in both water and methanol, …

AMMONIUM PERCHLORATE | CAMEO Chemicals | NOAA

AMMONIUM PERCHLORATE is a strong oxidizing agent. Decomposes at 130°C and explodes at 380°C [Mellor 2 Supp. 1:608 1956]. Explosions have occurred in propellant formulations containing ammonium perchlorate to which ferrocene has been added as a burning rate catalyst. Although the cause was not been definitely established, it was …

Ammonium Perchlorate NH4ClO4 (AP) Technical Grade …

Product: Ammonium Perchlorate. Quantity: Between 100g and 5000g (Use the drop down menu above to chose amount) Purity: Technical Grade – General Laboratory Use. Colour: White. Appearance: Powder – This tends to clump quite hard together and will need to be broken back down. Formula: NH4ClO4 ...

PREPARATION ET PROPRIETES DES PROPERGOLS: …

Au cours des dernières années l'importance et le développement des propergols solides composites n'ont cessé de cro?tre; le présent exposé décrit les modes de fabrication et les propriétés de ces poudres.

Simultaneous removal of perchlorate and energetic …

Ammonium perchlorate is one of the main constituents in Army's insensitive melt-pour explosive, PAX-21 in addition to RDX and 2,4-dinitroanisole (DNAN). The objective of …

Thermal Behavior and Decomposition Mechanism of Ammonium Perchlorate …

Nanometer triaminoguanidine nitrate (TAGN) with mean size of 218.7 nm was fabricated, and its structures were characterized by scanning electron microscopy, X-ray diffraction, IR, and X-ray photoelectron spectroscopy analyses. As an energetic accelerator for thermal decomposition of ammonium perchlorate (AP) and ammonium nitrate (AN), 10% nano …

Faut-il craindre les ions perchlorate dans l'environnement

Le perchlorate d'ammonium est utilisé dans des applications industrielles depuis le début du xx e siècle : d'abord dans des applications militaires puis aérospatiales en tant que comburant dans les moteurs propulseurs, du fait de leur capacité à produire rapidement une grande quantité de gaz. Les propergols, mélanges stables ...

Heterobimetallic Catalysts for the Thermal Decomposition of Ammonium …

The complexes were tested as catalysts on the thermal decomposition of ammonium perchlorate examined by a differential scanning calorimetry technique to study their catalytic behavior. Compound (1) causes a decrease of ammonium perchlorate's decomposition temperature to 315 °C, consequently increasing the heat release by 138 …

Biological treatment of ammonium perchlorate

Ammonium perchlorate has been used as a primary oxidizer in solid propellants for missiles, ... (Ahn et al. 2014) that pretreatment of the army's insensitive melt-pour explosive, PAX-21, production wastewater with ZVI can convert the energetic compounds present in PAX-21 to products that can serve as electron donors for PRB. PAX-21 mainly ...

In situ synthesis NiO@TiO2/MXene as a promoter for ammonium perchlorate …

The carrier can widely affect or even dominate the catalytic activity and selectivity of nanoparticles for ammonium perchlorate (AP). In this work, a novel catalyst NiO@TiO 2 /MXene (TN) nanocomposite was prepared by a simple hydrothermal method using two-dimensional MXene as the catalyst carrier. System characterization reveals that the …

Combustion of Ammonium Perchlorate: New Findings

2 Combustion of Ammonium Perchlorate Monopropellant. The chief ingredient, AP, controls the combustion characteristics of composite solid propellants. AP is also a …

Mechanism of Interaction between Ammonium Perchlorate …

There is an interactive effect between ammonium perchlorate (AP) and aluminum (Al) powder during the combustion process of composite solid propellants, but the mechanism of this effect is still lacking. Using quantum chemical methods, we investigated this mechanism from a molecular perspective. The interaction process between Al and AP was analyzed …

GitHub

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A revised model of ammonium perchlorate combustion …

In this study, we propose a revised coupled combustion model for ammonium perchlorate (AP), leveraging recent advances in the modeling of ammonia and NO x chemistry. A coupled combustion model relies on three founding bricks: a detailed gas-phase kinetic model, a condensed-phase decomposition model, and a pyrolysis law describing the …

Ammonium perchlorate

Quantity Value Units Method Reference Comment; Δ f H° solid-295.77: kJ/mol: Review: Chase, 1998: Data last reviewed in December, 1962: Quantity Value Units Method Reference

Kinetics of Thermal Decomposition of Ammonium Perchlorate by …

Ammonium perchlorate (AP) is the most common oxidizer in various propellants and pyrotechnics [1]. The thermal decomposition characteristics of AP play a key role in the combustion behavior of comp...

Thermal behavior and decomposition mechanism of ammonium perchlorate …

The ammonium perchlorate (AP) plays a key role in the production of highly energetic materials for application in aerospace propulsion; and the development of catalysts for the production of high burning rate (BR) propellants based on AP is an active field of research. Recently, the graphitic carbon nitrides have been used as a metal-free catalyst for the …

Ammonium perchlorate

Ammonium perchlorate is used largely in explosives and jet and rocket propellants 2 due to its high activation energy. 4 Occupational exposure can occur through inhalation 5 and dermal contact, although dermal absorption of perchlorate is expected to be low. 6 Through its uses as a solid oxidant in space shuttles and missiles, it is released ...

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