Investigation of the Spectroscopy and Kinetics of Transient Intermediates of Importance in the Decomposition of Energetic Materials

2009 ◽  
Author(s):  
Paul J. Dagdigian
Keyword(s):  
Energetic Materials ◽  
Transient Intermediates ◽  
Kinetics Of

Evaluation of decomposition kinetics of energetic materials in the combustion wave

2009 ◽  
Vol 496 (1-2) ◽  
pp. 1-12 ◽  
Author(s):  
V.P. Sinditskii ◽  
V.Yu. Egorshev ◽  
V.V. Serushkin ◽  
A.I. Levshenkov ◽  
M.V. Berezin ◽  
...  
Keyword(s):  
Combustion Wave ◽  
Energetic Materials ◽  
Decomposition Kinetics ◽  
Kinetics Of

scholarly journals Flash Photolysis of Cutinase: Identification and Decay Kinetics of Transient Intermediates Formed upon UV Excitation of Aromatic Residues

2009 ◽  
Vol 97 (1) ◽  
pp. 211-226 ◽  
Author(s):  
Maria Teresa Neves-Petersen ◽  
Søren Klitgaard ◽  
Torbjorn Pascher ◽  
Esben Skovsen ◽  
Tomas Polivka ◽  
...  
Keyword(s):  
Flash Photolysis ◽  
Decay Kinetics ◽  
Aromatic Residues ◽  
Transient Intermediates ◽  
Kinetics Of ◽  
Uv Excitation

The Application of Thermal Analysis to Research on Energetic Materials

2013 ◽  
Vol 750-752 ◽  
pp. 1180-1183
Author(s):  
Tao Zhang ◽  
Ming Hua Chen ◽  
Xiao Biao Jia ◽  
Hao Nan Jia ◽  
Yong Kang Chen
Keyword(s):  
Thermal Analysis ◽  
Thermal Decomposition ◽  
High Precision ◽  
Energetic Materials ◽  
Decomposition Kinetics ◽  
Thermal Decomposition Kinetics ◽  
Physical Constants ◽  
Kinetics Of

This paper introduces briefly the application of thermal analysis in energetic materials and its importance. Thermal analysis has many advantages: operation is simple and quick, wide fields fit to, the characteristic of the high precision and so on. It plays an important role in the thermal decomposition kinetics of energetic materials, stability and compatibility, and the determination of thermal physical constants.

Kinetics of reversible polymorphic transition in energetic materials. Phase transitions α → β and β → α in 1,1-diamino-2,2-dinitroethylene

2014 ◽  
Vol 8 (6) ◽  
pp. 822-828 ◽  
Author(s):  
V. V. Zakharov ◽  
N. V. Chukanov ◽  
A. D. Chervonnyi ◽  
S. A. Vozchikova ◽  
B. L. Korsounskii
Keyword(s):  
Phase Transitions ◽  
Energetic Materials ◽  
Polymorphic Transition ◽  
Kinetics Of

The oxidation of diborane

1967 ◽  
Vol 296 (1444) ◽  
pp. 1-23 ◽  
Keyword(s):  
Total Pressure ◽  
Flash Photolysis ◽  
Experimental Studies ◽  
Pressure Change ◽  
Reaction Scheme ◽  
Gaseous Products ◽  
Pure Silica ◽  
Branching Chains ◽  
Transient Intermediates ◽  
Kinetics Of

Two experimental studies have been made of the gas phase oxidation of diborane. First, conventional oxidation in furnace-heated vessels, at temperatures between 80 and 200 °C was used to show that degenerately branching chains must be involved. Secondly, some transient intermediates were monitored by kinetic absorption spectroscopy in oxidations initiated by flash photolysis. Since diborane absorbs only weakly above 2000 A, only very pure silica (Spectrosil A) would transmit enough energy to produce dissociation. The spectrum of BH and a pressure change were evidence of this when diborane was flashed alone at about 0*01 atm. A very rapid reaction was produced on flashing diborane with oxygen both at low total pressures, about 0-03 atm, and with the total pressure raised to about 1 atm by the addition of inert gas. In apparatus of conventional silica, a chromophoric sensitizer (nitrogen dioxide) was necessary. An incubation period of about 100 us followed the flash, towards the end of which the spectra of OH and B 02 appeared. With low total pressure, BO and BH also appeared as the temperature began to rise in the developing explosion. The gaseous products from both types of reaction were analysed, and a reaction scheme is proposed which takes account of them and of the observed radicals. The hydroxyl radical is undoubtedly intimately concerned in the principal reactions. Predictions made from this scheme for non-explosive conditions are in fair agreement with observed kinetics of the slow oxidation.

Improved thermal properties of Al powders coated with submicron-sized hollow nickel particles

2009 ◽  
Vol 24 (10) ◽  
pp. 3220-3225 ◽  
Author(s):  
Jialiang Cheng ◽  
Huey H. Hng ◽  
Hsiao Y. Ng ◽  
Pei C. Soon ◽  
Yiew W. Lee
Keyword(s):  
Energetic Materials ◽  
X Ray Diffraction ◽  
Promising Candidate ◽  
Intimate Contact ◽  
Complete Combustion ◽  
Nickel Particles ◽  
Combustion Properties ◽  
Powder Samples ◽  
Kinetics Of ◽  
Better Than

This work investigates the coating of nano- to submicron-sized hollow nickel particles onto Al powders to optimize the thermal and combustion properties of Al-based energetic materials. Different wt% of hollow nickel particles coated onto Al particles was synthesized using an autocatalytic aqueous reduction method. X-ray diffraction results showed distinct crystalline Al and Ni phases indicating that a pure coating process was achieved. Homogeneous coating of hollow nickel particles onto individual Al particles was also reflected from the scanning electron microscope images. All the samples showed significant improvements in terms of their ignition and kinetics of combustion as compared to untreated Al. The most promising candidate produced was the 30wt%Ni–Al sample whereby the %complete combustion of Al exhibited the largest improvement. The hollow Ni-coated Al samples were also found to perform better than their physically mixed Ni–Al powder samples, as there is more intimate contact between the two components to hasten the overall combustion kinetics.

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