TABLE OF CONTENTS The information provided in the following tables is an assortment of permeability and selectivity values or their alternatives, as per the presentation of the subject in Chapter 1.As the concluding tabulation, in Table A1.23, this information is condensed into spreadsheet representation of selected membrane permeability for various components and membrane materials.
| System | Temp.( C) | 10 ?6cm 2/sec-atm | 10 ?9cm 2/sec-atm | 10 ?9cm 2/sec-cm Hg |
|---|---|---|---|---|
| H-Cu | 500 | 3.5 | 3,500 | 46.1 |
| 750 | 8 | 8,000 | 105 | |
| H-Fe | 500 | 100 | 100,000 | 1,316 |
| 600 | 336 | Etc. | 4,421 | |
| H-Ni | 500 | 3.8 | 50 | |
| 750 | 31.6 | 416 | ||
| H-Pd | 500 | 4,450 | 58,550 | |
| 600 | 5,750 | 75,660 | ||
| H-Pt | 600 | 0.77 | 0.1 | |
| 800 | 4.8 | 63.2 | ||
| H-Zn | 300 | 0.4 | 5.3 | |
| H-rubber | 20 | 0.3 | 3.9 | |
| 100 | 2.6 | 34.2 | ||
| H-SiO2 | 500 | 6.2-28 | 0.08-0.37 | |
| 800 | 35-100 | 0.46-1.3 | ||
| H-Pyrex | 600 | Inappreciable | Inappreciable | |
| Source: Adapted from the International Critical Tables, vol. V, pp.76-77. |
| Membrane | P He | P N 2 | P CH 4 | He/N 2 | He/CH 4 |
|---|---|---|---|---|---|
| Silicone | 23 | 15 | 59 | 1.5 | 0.39 |
| Phenyl silicone | 15 | 4.0 | 20 | 3.8 | 0.75 |
| Nitrile silicone | 7.9 | 2.1 | 10 | 3.8 | 0.79 |
| Polycarbonate | 6.7 | 0.46 | 0.36 | 15 | 19 |
| Teflon | 6.2 | 0.25 | 0.14 | 25 | 44 |
| Natural rubber | 3.6 | 1.05 |
| 3.4 |
|
| Polystyrene | 3.5 | 0.22 | 0.23 | 16.0 | 15 |
| Triethene B | 3.4 | 0.012 | 0.0084 | 280 | 400 |
| Ethyl cellulose | 3.1 | 0.28 | 0.64 | 11 |
