Synthesis, structure and properties of a high-energy metal–organic framework fuel [Cu(MTZ)₂(CTB)₂]_n

Abstract

In this study, a novel high-energy metal-organic framework (MOF, [Cu(MTZ)2(CTB)2]n) was constructed based on the nitrogen-rich cyanotetrazolylborohydride (CTB) and 1-methyltriazole (MTZ) ligands, with Cu2+ as the autocatalytic metal centers. The...

Facile synthesis and superior properties of a nitrogen-rich energetic Zn-MOF with a 2D azide-bridged bilayer structure

“…Since the first EMOF synthesized by Hope-Weeks et al in 2012, 14 some 1D, 2D and 3D EMOFs with novel structures have been designed and prepared for the sake of increasing the nitrogen content or improving their thermostability and insensitivity, so as to realize their application in high-energy propellants with green and insensitive features. [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31] What needs to be explained here is that a high nitrogen content not only leads to high energetic performance but also means a large amount of nitrogen gas rather than residual carbon in the combustion products of EMOFs, which is consistent with the demand for green and sustainable chemistry. On the other hand, although Pb-containing compounds, including Pb-MOFs, are the most widely-used combustion promoters in propellants, [32][33][34][35][36] the toxic nature of Pb makes them very harmful to the environment.…”

“…Although azides are sensitive, tetrazole-containing EMOFs are highly insensitive, which has been verified in some research studies. 27,29,35,51 On the other hand, the azide groups in [Zn 2 (atz) 3 (N 3 )] n are located in the interlayer of the bilayer structure, which could be protected by the less insensitive Zn-atz layers, thus lowering the sensitivity of the EMOF.…”

Facile Manufacture of Oxide-Free Cu Particles Coated with Oleic Acid by Electrical Discharge Machining

“…The corresponding planes of pure Cu were used to index all diffraction peaks. The Bragg's reflections of the copper particles exhibited 2θ values of 43.2 • , 50.4 • , and 74.0 • , which relate to (111), (220), and (200) [30]. It emphasised that the copper particles were free from oxidation.…”

Energetic Bimetallic MOF: A Promising Promoter for Ionic Liquid Hypergolic Ignition

“…Rogers and co-workers incorporated an acetylene or vinyl substituent to endow zeolitic imidazolate frameworks (ZIFs) with hypergolic properties, which opened a new application of MOFs as hypergolic fuels . In addition, applying a hypergolic linker and high-energy ligand to construct EMOFs is a strategy that endows EMOFs with intriguing hypergolic ability. , The hypergolic EMOFs, which have remarkable energy density and ultrashort ignition delay, can be applied as hypergolic additives in conventional hybrid engine fuels and advanced high-performance hypergolic materials for space exploration …”

“…27 In addition, applying a hypergolic linker and high-energy ligand to construct EMOFs is a strategy that endows EMOFs with intriguing hypergolic ability. 28,29 The hypergolic EMOFs, which have remarkable energy density and ultrashort ignition delay, can be applied as hypergolic additives in conventional hybrid engine fuels 30 and advanced high-performance hypergolic materials for space exploration. However, hypergolic EMOFs containing two metal ions in the inorganic nodes have not been reported in the current studies.…”