Efficient absorption of ammonia with dialkylphosphate-based ionic liquids

Abstract

Ammonia (NH3) absorption has attracted much attention due to serious environmental pollution caused by ammonia in recent years. In this paper, solubilities of ammonia (pressure-temperature-composition (pTx) data) in five dialkylphosphate-based...

Ionic liquids and deep eutectic solvents for NH3 absorption and separation: a review

“…Meanwhile, thermodynamic properties such as enthalpies, Gibbs free energies, entropies, and heat capacities were calculated for corresponding NH 3 + ILs mixtures, with the result of positive Δ sol G or negative Δ sol S , indicating that the absorbing process is nonspontaneous. Yu et al 82 designed five dialkylphosphate-based ILs of [C 4 C 1 im][DBP], [C 4 C 1 im][DMP], [C 2 C 1 im][DEP], [C 2 C 1 im][DMP] and [C 1 C 1 im][DMP] as suitable NH 3 absorbents. The solubilities of NH 3 in these ILs were determined at different temperatures (303.15–333.15 K) and pressures (0.1–0.6 MPa).…”

A Mini-Review on NH3 Separation Technologies: Recent Advances and Future Directions

“…Table summarizes the functional types and NH 3 absorption capacities of representative ILs reported in the literature. − The process simulations performed by Zhan et al and Liu et al demonstrated that the IL-based NH 3 separation process exhibits significantly reduced energy consumption, operation cost, and net CO 2 emission than an aqueous-based process. , However, it should be pointed out that most ILs are expensive because they are normally synthesized from expensive reactants or through complicated routes. In addition, most ILs are with high viscosity due to the strong electrostatic attraction between cations and anions .…”