Ionic liquids for acetylene and ethylene separation: Material selection and solubility investigation

Design and screening of ionic liquids for C2H2/C2H4 separation by COSMO‐RS and experiments

“…Figure 2 shows the calculated Henry's law constants of C 2 H 4 and C 2 H 2 in 13 kinds of ILs at 313.15 K along with their experimental data. 19,43 It is clear that the calculated K H values deviated significantly from the experimental values.…”

Imidazolium-based ionic liquids with cyano groups for the selective absorption of ethane and ethylene

“…pure ionic liquids, expressed both as Henry's law constants, KH, and as gas mole fraction, x2, corrected for a partial pressure of solute of 0.1 MPa. p is the experimental equilibrium pressure, m is the amount of ionic liquid in grams and the percent deviation is relative to the correlations of the data reported in Table 2 The solubility of ethylene in [C 1 C 4 Im][NTf 2 ] has been measured by Xing et al [13], Anthony et al [26], Palgunadi et al [27] and is also reported in two publications from Deng et al [25,28] Highest deviations were found from Deng et al (+17% at 303 K, +11% at 323 K), probably due to a lower purity of the samples used by the authors that attribute the differences to their different measuring methods, in that case, a gravimetric microbalance and gas chromatography [25].…”

Rationally tuned micropores within enantiopure metal-organic frameworks for highly selective separation of acetylene and ethylene

“…Apparently, there is a significant need to develop novel alternative C 2 H 2 /C 2 H 4 separation approaches. Some recent attempts, hydrogenation by non-precious metal alloy catalysts 44 , ionic liquid extraction 45 , and π-complexation 46 , have been made to reduce the cost or to enhance the selectivities. The realization of our first example of microporous MOF materials for such challenging separation highlights the very promise of the emerging microporous MOFs to resolve this very important industrial separation task in the future.…”