Chemical Kinetics Interpretation of Hypergolicity of Dicyanamide Ionic Liquid-based Systems (PREPRINT)
Abstract
A detailed chemical kinetics model has been built to examine the gas-phase chemistry between isocyanic acid (HNCO), white fuming nitric acid (WFNA), N2O, CO2 and water. This kinetics model is able to explain the gas-phase ignition observed during hypergolic ignition of the ionic liquid; 1-butyl-3-methyl-imidazolium dicyanamide with WFNA. Sensitivity analyses have been performed to examine the reaction pathways for ignition. Ignition is predicted to occur via an exothermic reaction between isocyanic acid (HNCO) and nitric acid (HONO2), and subsequent HONO2 thermal decomposition that has NO2 and OH radicals as the primary chain carriers. A detailed understanding of the initiation processes in the liquid phase is needed as the 1-butyl-3- methyl-imidazolium dicyanamide and WFNA begin to react to produce the above pre-ignition species for the proposed chemical kinetics model to describe the ignition behavior of the system.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 04, 2011
- Accession Number
- ADA542004
Entities
People
- Ghanshyam L Vaghjiani
- Laurent Catoire
- Steven D Chambreau
Organizations
- University of Orléans