Table 3.
Pure gas diffusivity and solubility data for each PIL composite.
| ID | Ionene Composite | Mass Ratio | Data a | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Diffusivity and Solubility | DCO2 | ± | DN2 | ± | DCH4 | ± | DH2 | ± | ||
| 1 | [C4vim][Tf2N]: [Di(Im+)Benz ][Tf2N] | 0.9:0.1 | 1.10 × 10−7 | 6.53 × 10−9 | 5.86 × 10−7 | 5.53 × 10−7 | 7.10 × 10−8 | 5.00 × 10−9 | 5.41 × 10−7 | 9.23 × 10−8 |
| 2 | [C4vim][Tf2N]: [Tri(Im+)Benz ][Tf2N] | 0.9:0.1 | 1.00 × 10−7 | 1.54 × 10−8 | 5.78 × 10−8 | 2.34 × 10−8 | 3.46 × 10−8 | 7.25 × 10−9 | 2.61 × 10−7 | 9.99 × 10−8 |
| 3 | [C4vim][Tf2N]: [Tet(Im+)Benz ][Tf2N] | 0.9:0.1 | 9.53 × 10−8 | 1.13 × 10−9 | 2.69 × 10−8 | 1.09 × 10−9 | 2.61 × 10−8 | 3.36 × 10−9 | 3.53 × 10−7 | 9.70 × 10−8 |
| 4 | [C4vim][Tf2N]: [Hex(Im+)Benz ][Tf2N] | 0.9:0.1 | 9.44 × 10−8 | 6.58 × 10−9 | 2.39 × 10−8 | 4.48 × 10−9 | 2.55 × 10−8 | 8.43 × 10−9 | 2.24 × 10−7 | 5.57 × 10−8 |
| 5 | [C4vim][Tf2N]: [Tri (VinylIm+)XL ][Tf2N] | 0.99:0.01 | 6.66 × 10−8 | 4.29 × 10−9 | 1.63 × 10−8 | 8.88 × 10−10 | 9.59 × 10−9 | 1.67 × 10−9 | 4.75 × 10−7 | 8.12 × 10−8 |
| 6 | [C4vim][Tf2N]: [Tet (VinylIm+)XL ][Tf2N] | 0.99:0.01 | 2.45 × 10−7 | 3.78 × 10−8 | 3.91 × 10−8 | 5.78 × 10−9 | 1.41 × 10−7 | 2.20 × 10−8 | 1.81 × 10−7 | 4.33 × 10−8 |
| 7 | [C4vim][Tf2N]: [Tri (VinylIm+)XL ][Tf2N] | 0.995:0.005 | 7.99 × 10−8 | 4.51 × 10−9 | 6.02 × 10−7 | 8.83 × 10−8 | 1.87 × 10−7 | 1.86 × 10−8 | 1.2 × 10−7 | 5.00 × 10−10 |
| 8 | [C4vim][Tf2N]: [Tet (VinylIm+)XL ][Tf2N] | 0.995:0.005 | 4.57 × 10−8 | 1.01 × 10−8 | 1.86 × 10−8 | 7.71 × 10−9 | 2.47 × 10−8 | 3.73 × 10−9 | 2.59 × 10−7 | 6.14 × 10−8 |
| Diffusivity and Solubility | SCO2 | ± | SN2 | ± | SCH4 | ± | SH2 | ± | ||
| 1 | [C4vim][Tf2N]: [Di(Im+)Benz ][Tf2N] | 0.9:0.1 | 1.98 | 0.122 | 0.15 | 0.139 | 0.14 | 0.010 | 0.24 | 0.039 |
| 2 | [C4vim][Tf2N]: [Tri(Im+)Benz ][Tf2N] | 0.9:0.1 | 2.19 | 0.239 | 0.16 | 0.068 | 0.29 | 0.076 | 0.46 | 0.157 |
| 3 | [C4vim][Tf2N]: [Tet(Im+)Benz ][Tf2N] | 0.9:0.1 | 2.25 | 0.062 | 0.42 | 0.004 | 0.54 | 0.009 | 0.35 | 0.120 |
| 4 | [C4vim][Tf2N]: [Hex(Im+)Benz ][Tf2N] | 0.9:0.1 | 3.01 | 0.274 | 0.59 | 0.102 | 0.46 | 0.087 | 0.59 | 0.129 |
| 5 | [C4vim][Tf2N]: [Tri (VinylIm+)XL ][Tf2N] | 0.99:0.01 | 3.53 | 0.230 | 0.51 | 0.008 | 1.02 | 0.008 | 0.21 | 0.090 |
| 6 | [C4vim][Tf2N]: [Tet (VinylIm+)XL ][Tf2N] | 0.99:0.01 | 1.56 | 0.157 | 0.33 | 0.012 | 0.12 | 0.062 | 0.78 | 0.142 |
| 7 | [C4vim][Tf2N]: [Tri (VinylIm+)XL ][Tf2N] | 0.995:0.005 | 2.47 | 0.872 | 0.02 | 0.006 | 0.03 | 0.006 | 0.61 | 0.005 |
| 8 | [C4vim][Tf2N]: [Tet (VinylIm+)XL ][Tf2N] | 0.995:0.005 | 5.09 | 0.967 | 0.54 | 0.244 | 0.36 | 0.071 | 0.40 | 0.095 |
a Diffusivity coefficient (D) [cm2/s], solubility coefficient (S) [10−2 cmSTP3 cm−3 cm Hg−1].