Table 1.
Physical properties of light hydrocarbons of C1 to C4 [4].
| Adsorbate | Boiling point (K) | Kinetic diameter (Å) | Dipole moment (×1018esu cm) | Polarizability (×10−25cm3) | Application background |
|---|---|---|---|---|---|
| CH4 | 111.6 | 3.8 | 0 | 25.9 | Natural gas purification |
| C2H6 | 184.6 | 4.4 | 0 | 44.3 | Producing high-purity ethylene |
| C2H4 | 169.4 | 4.2 | 0 | 42.5 | |
| C3H8 | 231.0 | 4.3-5.1 | 0.084 | 62.9 | Producing high-purity propylene |
| C3H6 | 225.5 | 4.7 | 0.366 | 62.9 | |
| n-C4H10 | 272.7 | 4.7 | 0.05 | 82.0 | Paraffin separation of normal paraffin from iso-paraffins |
| i-C4H10 | 261.3 | 5.3 | 0.132 | 81.4-82.9 | |
| n-C4H8 | 266.9 | 4.5 | 0.359-0.438 | 79.7-85.2 | Olefin separation |
| i-C4H8 | 266.3 | 4.8 | 0.501 | 78.9 | |
| C4H6 | 268.6 | 5.2 | 0 | 86.4 | Removal of dienes from olefins |