Computation of the Dissociation Temperature of TBAB Semiclathrate in an Aqueous Solution Using Molecular Simulations
Shivanand Kumar Veesam, Sudeep N. Punnathanam
Abstract
-butyl ammonium bromide (TBAB) are known to form semiclathrate hydrates. Since they form at much milder conditions compared to gas hydrates, they have evoked much interest in development of new technologies for gas storage and gas separations. In this work, we present a method to compute the phase equilibrium of TBAB semiclathrate. The TBAB molecule is modeled using OPLS-AA and GAFF force fields and the results from simulations are compared with experimental data to determine the ability of the force fields to accurately predict the semiclathrate phase equilibria. It was observed that the OPLS-AA force field outperforms the GAFF force field in predicting the experimental phase equilibrium data.
Topics & Concepts
Force field (fiction)Dissociation (chemistry)Clathrate hydrateAmmonium bromideChemistryMolecular dynamicsAqueous solutionThermodynamicsAmmoniumMoleculeComputational chemistryPhysical chemistryHydrateComputer scienceOrganic chemistryPulmonary surfactantPhysicsArtificial intelligenceMethane Hydrates and Related PhenomenaSpacecraft and Cryogenic TechnologiesCO2 Sequestration and Geologic Interactions