Results 171 to 180 of about 979 (209)

MODELING THE PHOTOLYSIS OF AMMONIUM DINITRAMIDE IN NATURAL WATERS

Environmental Toxicology and Chemistry, 2000
Abstract Photolytic rate constants for the novel energetic compoundammonium dinitramide(ADNweredetermined in order to understand the fate of ADN in natural bodies of water. Quantum yields were measured between 290 and 400 nm using a lamp system, and these values were combined with absorption of light in a water column to model photolysis
Michelle K Beretvas, John P Hassett, Susan E Burns, Trisha M Basford   +3 more
openaire   +1 more source

Thermal decomposition of ammonium dinitramide and mechanism of anomalous decay of dinitramide salts

Russian Chemical Bulletin, 1999
Thermal decomposition of ammonium dinitramide proceedsvia homolytic rupture of the N−NO2 bond and partially by the proton transfer reaction. The monomolecular decay of the anion to N2O and NO3 − in the solid state at 60 °C occurs with higher rates than those in the melt.
A. N. Pavlov, V. N. Grebennikov, L. D. Nazina, G. M. Nazin, G. B. Manelis   +4 more
openaire   +1 more source

Stabilization of ammonium dinitramide in the liquid phase

Russian Chemical Bulletin, 2000
The kinetics of accumulation of the main products of thermal decomposition of ammonium dinitramide in the melt was investigated. The isotope composition of nitrogen-containing gases evolved by the decomposition of 15NH4N(NO2)2 and NH4 15N(NO2)2 was found.
A. B. Andreev, O. V. Anikin, A. P. Ivanov, V. K. Krylov, Z. P. Pak   +4 more
openaire   +1 more source

Thermal Analysis of Ammonium Dinitramide Decomposition

Propellants, Explosives, Pyrotechnics, 1997
AbstractThe new energetic material ammonium dinitramide (ADN), NH4N(NO2)2, has been investigated with regard to its thermal properties and decomposition behavior. Thermal decomposition of ADN is observed after complete melting at 91.5 °C. The main decomposition pathway is based on the formation of NH4NO3 and N2O followed by the thermal decomposition of
Stefan Löbbecke, Horst H. Krause, Achim Pfeil   +2 more
openaire   +1 more source

Role of Additives in the Combustion of Ammonium Dinitramide

Propellants, Explosives, Pyrotechnics, 2014
AbstractThe thermal decomposition behavior and combustion characteristics of mixtures of ammonium dinitramide (ADN) with additives were studied. Micrometer‐sized particles of Al, Fe2O3, TiO2, NiO, Cu(OH)NO3, copper, CuO, and nanometer‐sized particles of aluminum (Alex) and CuO (nano‐CuO) were employed.
Koji Fujisato, Hiroto Habu, Atsumi Miyake, Keiichi Hori, Alexander B. Vorozhtsov   +4 more
openaire   +1 more source

Combustion of ammonium dinitramide/polycaprolactone propellants

Proceedings of the Combustion Institute, 2002
This paper is devoted to the investigation of characteristics and mechanisms of combustion of a compositesolid rocket pseudo-propellant of stoichiometric composition based on ammonium dinitramide (ADN) and polycaprolactone (PCL). Experimental data on the dependence of burning rate on pressure in the pressure range of 4–8 MPa for the ADN/PCL propellant ...
O.P. Korobeinichev, A.A. Paletsky, A.G. Tereschenko, E.N. Volkov   +3 more
openaire   +1 more source

On the mechanism of thermal decomposition of ammonium dinitramide (review)

Combustion, Explosion, and Shock Waves, 2016
Despite significant progress in studying thermal decomposition of ammonium dinitramide (ADN), the kinetics of the process at the level of elementary stages has not been adequately understood. The aim of this review is to summarize various published data, which are of interest for studying and simulating the processes of thermal decomposition and ...
N. E. Ermolin, V. M. Fomin
openaire   +2 more sources

Ammonium Dinitramide:  Kinetics and Mechanism of Thermal Decomposition

The Journal of Physical Chemistry A, 1997
Thermal decomposition of ammonium dinitramide (ADN) has been studied by differential scanning calorimetry (DSC) and thermal gravimetry combined with mass spectrometry (TG−MS). ADN decomposes in the range 130−230 °C with an overall heat release of 240 ± 40 kJ mol-1.
Sergey Vyazovkin, Charles A. Wight
openaire   +1 more source

Ammonium Dinitramide−Water:  Interaction and Properties

Journal of Chemical & Engineering Data, 2006
The interaction between ammonium dinitramide (ADN) and water was experimentally investigated by determining the solid−liquid phase diagram for the system ADN−water and by measuring its critical relative humidity at 25 °C. Additionally, the density of aqueous ADN solutions of different compositions were measured in the temperature range from (5 to 85 ...
openaire   +1 more source

Thermal Decomposition and Combustion of Ammonium Dinitramide (Review)

Combustion, Explosion and Shock Waves, 2005
A comprehensive review of thermal decomposition and combustion of ammonium dinitramide (ADN) has been conducted. The basic thermal properties, chemical pathways, and reaction products in both the condensed and gas phases are analyzed over a broad range of ambient conditions.
R. Yang, P. Thakre, V. Yang
openaire   +1 more source