Enthalpies of formation and calculated detonation properties of some thermally stable explosives

1976 ◽  
Vol 21 (1) ◽  
pp. 16-20 ◽  
Author(s):  
Prince E. Rouse
Keyword(s):  
Enthalpies Of Formation ◽  
Detonation Properties ◽  
Thermally Stable

High-performing and thermally stable energetic 3,7-diamino-7H-[1,2,4]triazolo[4,3-b][1,2,4]triazole derivatives

2017 ◽  
Vol 5 (13) ◽  
pp. 6100-6105 ◽  
Author(s):  
Yongxing Tang ◽  
Chunlin He ◽  
Gregory H. Imler ◽  
Damon A. Parrish ◽  
Jean'ne M. Shreeve
Keyword(s):  
Detonation Properties ◽  
Thermally Stable ◽  
Triazole Derivatives ◽  
High Performing

A family of 3,7-diamino-7H-[1,2,4]triazolo[4,3-b][1,2,4]triazole derivatives is reported and some show promising detonation properties.

EMPIRICAL METHODS FOR ESTIMATING THE DETONATION PROPERTIES OF ENERGETIC TNAZ MOLECULAR DERIVATIVES

2004 ◽  
Vol 03 (03) ◽  
pp. 379-389 ◽  
Author(s):  
MIN-HSIEN LIU ◽  
CHENG CHEN ◽  
YAW-SHUN HONG
Keyword(s):  
Density Functional ◽  
Dft Calculation ◽  
Enthalpies Of Formation ◽  
Detonation Properties ◽  
Group Additivity ◽  
Detonation Pressure ◽  
Empirical Methods ◽  
Functional Theory ◽  
Simulation Results ◽  
Hybrid Density Functional

Following the successful synthesis of the TNAZ (1,3,3-trinitroazetidine), the amine reactant is theoretically replaced to yield the hypothesized TNAZ molecular derivatives. Hybrid density-functional theory (DFT) calculation method was applied to model TNAZ and its derivatives. In this investigation, the target molecular volumes were initially obtained using the group additivity approach, and then transferred into molecular densities. The densities and the least squares estimated enthalpies of formation (ΔHf) of TNAZ, and the corresponding derivatives, were obtained and the Kamlet–Jacobs empirical equations were used to determine the related detonation velocity and detonation pressure. The simulation results reveal that four of the TNAZ molecular derivatives perform similarly to the traditionally used RDX (1,3,5-trinitro-1,3,5-triazacyclohexane). Two other derivatives outperform RDX, with performance that approach that of HMX (1,3,5,7-tetranitro-1,3,5,7-tetraazacyclooctane).

Investigation of the V4+-Centre in 6H- and 4H-SIC by the Method of Spectral-Hole Burning

1998 ◽  
Vol 512 ◽  
Author(s):  
C. Hecht ◽  
R. Kummer ◽  
A. Winnacker
Keyword(s):  
Electronic Properties ◽  
Room Temperature ◽  
Hole Burning ◽  
Band Offset ◽  
Spectral Hole Burning ◽  
Type Ii ◽  
Thermally Stable ◽  
Spectral Hole

ABSTRACTIn the context of spectral-hole burning experiments in 4H- and 6H-SiC doped with vanadium the energy positions of the V4+/5+ level in both polytypes were determined in order to resolve discrepancies in literature. From these numbers the band offset of 6H/4H-SiC is calculated by using the Langer-Heinrich rule, and found to be of staggered type II. Furthermore the experiments show that thermally stable electronic traps exist in both polytypes at room temperature and considerably above, which may result in longtime transient shifts of electronic properties.

Advanced Thermally Stable Jet Fuels Development Program Annual Report. Volume 1. Model and Experiment System Development

1990 ◽  
Author(s):  
Elmer Klavetter ◽  
Tim O'Hern ◽  
Bill Marshall ◽  
Merrill Jr. ◽  
Frye Ray ◽  
...  
Keyword(s):  
Annual Report ◽  
System Development ◽  
Development Program ◽  
Jet Fuels ◽  
Thermally Stable ◽  
Experiment System

Acetylene chemisorption at palladium: Effect of temperature and structure of the surface

1984 ◽  
Vol 49 (6) ◽  
pp. 1448-1458
Author(s):  
Josef Kopešťanský
Keyword(s):  
Work Function ◽  
Atomic Hydrogen ◽  
Effect Of Temperature ◽  
Thermally Stable ◽  
Template Effect ◽  
Temperature Range ◽  
Adsorbed Layers ◽  
Different Types ◽  
Adsorption Complexes ◽  
Low Coverage

The effect of temperature and structure of the palladium surfaces on acetylene chemisorption was studied along with the interaction of the adsorbed layers with molecular and atomic hydrogen. The work function changes were measured and combined with the volumetric measurements and analysis of the products. At temperature below 100 °C, acetylene is adsorbed almost without dissociation and forms at least two different types of thermally stable adsorption complexes. Acetylene adsorbed at 200 °C is partly decomposed, especially in the low coverage region. Besides the above mentioned effects, the template effect of adsorbed acetylene was studied in the temperature range from -80° to 25 °C. It has been shown that this effect is a typical phenomenon of the palladium-acetylene system which is not due to surface impurities.

Thermally Stable Half-Sandwich Benzhydryl Ln(II) (Ln = Sm, Yb) Complexes Supported by Sterically Demanding Carbazolyl and Fluorenyl Ligands

2019 ◽  
Vol 38 (24) ◽  
pp. 4615-4624 ◽  
Author(s):  
Alexander N. Selikhov ◽  
Andrey S. Shavyrin ◽  
Anton V. Cherkasov ◽  
Georgy K. Fukin ◽  
Alexander A. Trifonov
Keyword(s):  
Thermally Stable ◽  
Sterically Demanding ◽  
Half Sandwich
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