Spectroscopic Study on the Intermediates and Reaction Rates in the Oxidation of Levitated Droplets of Energetic Ionic Liquids by Nitrogen Dioxide

2018 ◽  
Vol 122 (37) ◽  
pp. 7351-7377 ◽  
Author(s):  
Stephen J. Brotton ◽  
Michael Lucas ◽  
Tonya N. Jensen ◽  
Scott L. Anderson ◽  
Ralf I. Kaiser
Keyword(s):  
Ionic Liquids ◽  
Nitrogen Dioxide ◽  
Spectroscopic Study ◽  
Reaction Rates ◽  
Levitated Droplets ◽  
Energetic Ionic Liquids

Spectroscopic Investigation of the Primary Reaction Intermediates in the Oxidation of Levitated Droplets of Energetic Ionic Liquids

2017 ◽  
Vol 8 (24) ◽  
pp. 6053-6059 ◽  
Author(s):  
Stephen J. Brotton ◽  
Michael Lucas ◽  
Steven D. Chambreau ◽  
Ghanshyam L. Vaghjiani ◽  
Jiang Yu ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Spectroscopic Investigation ◽  
Reaction Intermediates ◽  
Primary Reaction ◽  
Levitated Droplets ◽  
Energetic Ionic Liquids

Spectroscopic Study on the Polymer Condensates Formed via Pyrolysis of Levitated Droplets of Dicyanamide-Containing Ionic Liquids

2019 ◽  
Vol 123 (6) ◽  
pp. 1153-1167 ◽  
Author(s):  
Stephen J. Brotton ◽  
Ralf I. Kaiser
Keyword(s):  
Ionic Liquids ◽  
Spectroscopic Study ◽  
Levitated Droplets

Electrochemical and spectroscopic study of vanadyl acetylacetonate–ionic liquids interactions

2021 ◽  
Vol 373 ◽  
pp. 137865
Author(s):  
L. Guglielmero ◽  
Mo. Meskinfam Langroudi ◽  
M. Al Khatib ◽  
M. Aysla Costa de Oliveira ◽  
B. Mecheri ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Spectroscopic Study ◽  
Vanadyl Acetylacetonate

Spectroscopic Study on Imidazolium-Based Ionic Liquids: Effect of Alkyl Chain Length and Anion

2012 ◽  
Vol 116 (11) ◽  
pp. 3512-3518 ◽  
Author(s):  
Enrico Binetti ◽  
Annamaria Panniello ◽  
Leonardo Triggiani ◽  
Raffaele Tommasi ◽  
Angela Agostiano ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Spectroscopic Study ◽  
Chain Length ◽  
Alkyl Chain ◽  
Alkyl Chain Length

Exploring the Possibilities of Energetic Ionic Liquids as Non-toxic Hypergolic Bipropellants in Liquid Rocket Engines

2021 ◽  
pp. 118217
Author(s):  
I. Isaac Sam ◽  
S. Gayathri ◽  
G. Santhosh ◽  
Jobin Cyriac ◽  
S. Reshmi
Keyword(s):  
Ionic Liquids ◽  
Rocket Engines ◽  
Liquid Rocket Engines ◽  
Liquid Rocket ◽  
Energetic Ionic Liquids

scholarly journals Vibrational Spectroscopic Study on Lubrication and Corrosive Wear Mechanisms of Imidazolium Based Ionic Liquids

10.5772/59132 ◽  
2015 ◽  
Author(s):  
Seiya Watanabe ◽  
Miki Nakano ◽  
Koji Miyake ◽  
Chiharu Tadokoro ◽  
Shinya Sasaki
Keyword(s):  
Ionic Liquids ◽  
Spectroscopic Study ◽  
Wear Mechanisms ◽  
Corrosive Wear

Raman spectroscopic study of base catalyzed di- and trimerization of malononitrile in ionic liquids and water

2006 ◽  
Vol 799 (1-3) ◽  
pp. 146-152 ◽  
Author(s):  
Mercedes López-Pastor ◽  
Ana Domínguez-Vidal ◽  
Maria José Ayora-Cañada ◽  
Miguel Valcárcel ◽  
Bernhard Lendl
Keyword(s):  
Ionic Liquids ◽  
Spectroscopic Study ◽  
Raman Spectroscopic ◽  
Raman Spectroscopic Study

Bishydrobis(tetrazol-1-yl)borate (BTB) based energetic ionic liquids with high density and energy capacity as hypergolic fuels

2017 ◽  
Vol 5 (30) ◽  
pp. 15525-15528 ◽  
Author(s):  
Xingye Li ◽  
Chenbin Wang ◽  
Haibo Li ◽  
Fude Nie ◽  
Hongquan Yin ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
High Density ◽  
Energy Capacity ◽  
New Family ◽  
Energetic Ionic Liquids

A new family of bishydrobis(tetrazol-1-yl)borate (BTB) based energetic ionic liquids were synthesized, which are hypergolic with oxidizers and show superior energy capacity and high density.

Synthesis of 1,8-dioxo-octahydro-xanthene and tetrahydrobenzo[b]pyran derivatives promoted by two bis-imidazolium-based ionic liquids

2021 ◽  
Vol 08 ◽  
Author(s):  
Maryam Shirzad ◽  
Mitra Nasiri ◽  
Nader Daneshvar ◽  
Farhad Shirini ◽  
Hassan Tajik
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Knoevenagel Condensation ◽  
Reaction Rates ◽  
Xanthene Derivatives ◽  
Acidic Ionic Liquids ◽  
Dicationic Ionic Liquids ◽  
Acidic Nature ◽  
Work Up ◽  
Reaction Media

Aim and objective: In this work, we have prepared two bis-dicationic ionic liquids with the same cationic core (Bis-imidazole) and different counter-anions using sulfuric acid and perchloric acids. After that, the efficiency and ability of these compounds as catalysts were investigated and compared in the promotion of Knoevenagel condensation and synthesis of benzo[b]pyran derivatives to see the effect of the anionic counter-part in the reaction. Material and method: In a 25 mL round-bottomed flask, a mixture of aldehyde (1.0 mmol), 1,3-cyclodicarbonyl (2.0 mmol) and the desired amount of the mentioned acidic ionic liquids was heated at 90°C in the absence of solvent (Reaction A) or In a 25 mL round-bottomed flask, a mixture of aldehyde (1.0 mmol), 1,3-cyclodicarbonyl (1.0 mmol), malononitrile, (1.1 mmol) and optimized amounts of the ionic liquid in water (3.0 mL) was heated at 80°C (Reaction B) for the appropriated time. After the completion of the reactions which were monitored by TLC (n-hexane: EtOAc; 3:1), 10 mL of water was added and the mixture was stirred for 2 minutes. Then, the products were separated by filtration and were washed several times with water. After drying, the pure products were obtained while there was no need to further. Results: Comparison of the obtained results from both of the ionic liquids revealed that [H2-Bisim][HSO4]2 because of its more acidic structure had a more catalytic activity for the preparation of 1,8-dioxo-octahydro-xanthene derivatives but [H2-Bisim][ClO4]2 was relatively more efficient for the synthesis of tetrahydrobenzo[b]pyran derivatives since the stronger acidic nature of [H2-Bisim][HSO4]2 may prevent the simple activation of malononitrile in the reaction media. Conclusion: In this study, we have introduced efficient methods for the synthesis of 1,8-dioxo-octahydro-xanthene and tetrahydrobenzo[b]pyran derivatives in the presence of catalytic amounts of [H2-Bisim][ClO4]2 and [H2-Bisim][HSO4]2 These methods have several advantages such as ease of preparation and handling of the catalysts, high reaction rates, excellent yields, eco-friendly procedures and simple work-up.

Sign in / Sign up

Export Citation Format

Share Document