Application of reaction equilibrium thermodynamic model for correlation of H2S solubility in ionic liquids [emim][Ace] and [hmim][Ace] using CPA equation of state

摘要

Correlation of H2S solubility in ionic liquids [emim][Ace] and [hmim][Ace] was performed using CPA EoS. For taking into account the effect of possible chemical reactions, the Reaction Equilibrium Thermodynamic Model (RETM) was used. This model assumes that an AB(2) type reaction mechanism between two IL molecules and one H2S molecule is taken place. Both of H2S and ILs was considered as association components following 4C and 2B association schemes, respectively. First, pure components parameters achieved using CPA EoS. Consequently, the binary systems were investigated applying RETM. The results show AAD% equal to 4.75 and 12.44 for [emim][Ace] and [hmim][Ace] respectively.