| Am | Active area |
| APTES | 3-aminopropyltriethoxysilane |
| β | Separation factor |
| D | Diffusivity |
| DD3R | Deca-dodecasil 3 rhombohedral |
| DMC | Dimethyl carbonate |
| IPA | Isopropanol |
| J | Permeate flux |
| mi | Mass of compound i |
| MTBE | Methyl tert-butyl ether |
| NMP | N-methyl pyrrolidone |
| P | Permeability |
| PDMS | Polydimethylsiloxane |
| PEC | Positively charged polyelectrolyte |
| POTS | 1H,1H,2H,2H-perfluoroalkyltriethoxysilanes |
| PSI | Pervaporation separation index |
| PV | Pervaporation |
| S | Solubility |
| t | Time |
| ZSM-5 | Zeolite Socony Mobil–5 |
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