Energetic bimetallic complexes as catalysts affect the thermal decomposition of ammonium perchlorate

Abstract

Two bimetallic complexes of 4-hydroxy-3,5-dinitropyrazole, [K2Mn(DNPO)2(H2O)4]n2∙H2O (BMEP-1) and [K2Zn(DNPO)2(H2O)6]n (BMEP-2) were synthesized and characterized by IR spectroscopy and elemental analysis. The crystal structures of BMEP-1 and BMEP-2 were determined by...

Understanding the synergistically enhanced thermocatalytic decomposition of ammonium perchlorate using cobalt nanoparticle-embedded nitrogen-doped graphitized carbon

“…In addition, the binding energies of NH 2 , NH, and N species for all planes show a gradually decreasing trend (Fig. S10 and S11, ESI†), which indicates the clear trend of dissociation of NH 3 , and then the NH 3 dissociated species, protons, and NC react with the adsorbed oxidizing species by Co-NPs 69,70 to generate N 2 O (2180–2260 cm −1 and 1250–1330 cm −1 ), 71 NO (1750–1840 cm −1 ), 72 NO 2 (1560–1650 cm −1 ), 72 CO 2 (2350 cm −1 and 670 cm −1 ), 67 H 2 O (3480–3625 cm −1 ), and HCl (2685–3025 cm −1 ) 73 (Fig. 4b), while the Co-NPs@NC- T gradually oxidize and burn to release heat, which in turn promotes the AP thermocatalytic decomposition process (Fig.…”

“…Therefore, there are reasonable reasons to believe that the Co-NPs@NC-T can directly capture NH 3 from the AP surface, eliminating the SD process by weakening the accumulation of NH 3 on the AP surface, and exhibiting excellent catalytic activity. In addition, the binding energies of NH 2 , NH, and N species for all planes show a gradually decreasing trend (Figure S10 and Figure S11), which indicates the clear trend of dissociation of NH 3 , and then the NH 3 dissociated species, proton, and NC react with the adsorbed oxidizing species by Co-NPs 69,70 to generate N 2 O (2180-2260 cm -1 and 1250-1330 cm -1 ) 71 , NO (1750-1840 cm -1 ) 72 , NO 2 (1560-1650 cm -1 ) 72 , CO 2 (2350 cm -1 and 670 cm -1 ) 67 , H 2 O (3480-3625 cm -1 ), and HCl (2685-3025 cm -1 ) 73 (Figure 4b), while the the Co-NPs@NC-T gradually oxidizes and burns to release heat, which in turn promotes the AP thermocatalytic decomposition process (Figure 4c). Therefore, The Co-NPs@NC-T possess excellent catalytic activity in line with expectations.…”

Cupric coordination compounds with multiple anions: a promising strategy for the regulation of energetic materials

“…10–12 Moreover, they exhibit excellent performance or application by introducing different kinds of ligands, metal cations, and anions, increasing the variety of metal cations as well as the variety of anions. 13–17 For example, N 3 − (azide ions) gives the complex higher mechanical sensitivity and strong detonation ability, while DCA − (dicyandiamide ions) gives the complex better thermal stability, lower sensitivity, and higher combustion heat. 18,19 Another example is the preparation of Cu(N 3 ) 2 (L) (L = 1-methyltetrazole (MTZ), 1-ethyltetrazole (ETZ), and 1-propyltetrazole (PTZ)), which regulates the stability and mechanical sensitivity of copper azide by changing the ligand.…”

Facile Synthesis of Energetic Multi-Heterocyclic Compound via a Promising Intramolecular Integration Strategy

“…Energetic materials are widely used in military and civilian fields and play an indispensable role in human society. − With the vigorous development of military, civil industry, aerospace, and other fields, in order to synthesize new high-performance elemental explosives that meet special requirements, energetic material workers have focused on the research of poly-nitrogen compounds. , Among them, heterocyclic ring is the research object and has become the preferred skeleton for the design and synthesis of novel energetic materials due to its high nitrogen content, heat of formation, and high density. − Besides, finding heterocyclic skeleton compounds to replace the nitro explosives currently used is one of the hotspots in the field of energetic materials due to the environmental pollution nowadays. − …”