Iodocuprate-containing ionic liquids as promoters for green propulsion

Wang, Kangcai; Chinnam, Ajay Kumar; Petrutik, Natan; Komarala, Eswaravara Prasadarao; Zhang, Qinghua; Yan, Qi‐Long; Dobrovetsky, Roman; Gozin, Michael

doi:10.1039/c8ta08042a

Cited by 48 publications

(22 citation statements)

References 75 publications

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“…Ionic liquid emImI displayed a significant influence on the synthetic process, not only because emIm + cations serve as a structure directing agent but also because I – anions play an important mineralizing role in the formation of new structures. −, AgI exhibits negligible solubility in common solvent, due to the strong covalent bond character of the Ag–I bond and the 3D infinite network. However, emImI has high solubility and dissociates into active ions or small ion pairing clusters in acetonitrile, which allows for numerous applications.…”

Section: Resultsmentioning

confidence: 99%

Luminescent Thermochromic Silver Iodides as Wavelength-Dependent Thermometers

et al. 2020

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Luminescent thermochromic materials with a dramatic shift of emission band under different temperatures are highly desirable in temperature sensing fields. However, the design of the synthesis of such compounds remains a great challenge. In this work, two new luminescent thermochromic silver iodides, (emIm)Ag3I4 (1) and (emIm)Ag2I3 (2) (emIm = 1-ethyl-3-methyl imidazole), have been synthesized under solvothermal conditions. Compound 1 features a [Ag3I4]− anionic layer, while compound 2 possesses an infinite [Ag2I3]− chain structure, both of which are charge balanced by emIm+ cations. Particularly, they display luminescent thermochromism with a significant wavelength shift of emission maximum with temperature change. They represent rare examples of infinite layered or chain silver iodides that show luminescent thermochromism. Furthermore, the results indicate that compounds 1 and 2 are promising wavelength-dependent luminescent thermometers.

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Section: Resultsmentioning

confidence: 99%

Luminescent Thermochromic Silver Iodides as Wavelength-Dependent Thermometers

et al. 2020

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“…Consequently, chemical propulsion is still the choice for rocket launchers or in-orbit maneuvering, 9,10 with hybrid engines an attractive alternative to complex, and therefore more costly, liquid-fueled engines. 11 To replace polluting propellants and enable competitive small-scale launchers, new technologies [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29] should match or exceed the performance metrics of currently used propulsion approaches. For instance, the characteristic velocity (C*) is a measure of the combustion performance of a rocket propulsion system, independent of its nozzle.…”

Section: Introductionmentioning

confidence: 99%

Metal–organic frameworks as hypergolic additives for hybrid rockets

et al. 2022

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“…Another approach to promote hypergolic reactions between HILs and HTP is the use of catalysts. − Generally, these catalysts can be divided into two categories based on their catalytic ignition mechanisms. One group is called energetic catalysts, which include strongly reducing agents, for example, borohydride and metal hydrides .…”

Section: Introductionmentioning

confidence: 99%

“…This strategy has aroused increasing attention in recent years, and many new catalysts with interesting structures have been developed. For example, after addition of a catalyst, ultrafast autoignition between HILs and H 2 O 2 was achieved, but most of these catalysts contain halogens, which may pose environmental issues. , Unfortunately, few halogen-free catalysts have been developed.…”

Section: Introductionmentioning

confidence: 99%

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Hunting for Energetic Complexes as Hypergolic Promoters for Green Propellants Using Hydrogen Peroxide as Oxidizer

Zhao

Wang

et al. 2021

Inorg. Chem.

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The development of hypergolic materials has aroused great interest due to their important applications in aerospace technology. In this work, six new energetic complexes were prepared and comprehensively characterized. All energetic complexes had isostructural characteristics, which made them ideal candidates for studying their structure−performance relationships. These energetic complexes had good thermal stabilities and excellent specific impulses. The vacuum-specific impulses were in the range 264.0−271.9 s, which was greater than most reported solid hypergolic materials. Moreover, the hypergolic performance of these compounds was examined by using 100% HNO 3 as the oxidizer, and their catalytic performance in the hypergolic reaction of typical energetic ionic liquids and 90% H 2 O 2 was comprehensively studied. All compounds displayed excellent hypergolic performance with the shortest ignition delay time of 4 ms. The examined copper-containing energetic complexes displayed excellent catalytic activities for the hypergolic reaction between energetic ionic liquids and 90% H 2 O 2 . The shortest ignition delay time of the examined hypergolic reactions was 31 ms. The suitable physicochemical properties, excellent energetic properties, and high catalytic activity of the hypergolic reactions have demonstrated the great potential of these energetic complexes as promoters for the development of green hypergolic bipropellants.

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Iodocuprate-containing ionic liquids as promoters for green propulsion

Abstract: New iodocuprate-containing ionic liquids with high thermostability were designed, prepared and evaluated as hypergolic reaction promoters between an energetic ionic fuel and a H2O2 “green” oxidizer.

Cited by 48 publications

References 75 publications

Luminescent Thermochromic Silver Iodides as Wavelength-Dependent Thermometers

Luminescent Thermochromic Silver Iodides as Wavelength-Dependent Thermometers

Metal–organic frameworks as hypergolic additives for hybrid rockets

Hunting for Energetic Complexes as Hypergolic Promoters for Green Propellants Using Hydrogen Peroxide as Oxidizer

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