Physical adsorption and heat of immersion studies of microporous carbons
Atkinson, D; Mcleod, A; Sing, K; Capon, A
| HERO ID | 856153 |
|---|---|
| In Press | No |
| Year | 1982 |
| Title | Physical adsorption and heat of immersion studies of microporous carbons |
| Authors | Atkinson, D; Mcleod, A; Sing, K; Capon, A |
| Journal | Carbon |
| Volume | 20 |
| Issue | 4 |
| Page Numbers | 339-343 |
| Abstract | Physisorption and heat of immersion measurements have been made with two microporous carbons-a sample of charcoal cloth (BET area, 1250 m2 g-1; pore volume, 0.59 cm3 g-1 having predominantly narrow micropores and a sample of Amoco carbon (BET area, 3700 m2 g-1; pore volume, 1.9 cm3 g-1), having a wider distribution of micropores extending into the supermicropore range (pore width, ca. 1-2 nm). The adsorption isotherms of nitrogen and toluene are of Type 1 and reveal that the external surface of both samples is very small. The heat of immersion measurements were carried out with the aid of a Tian-Calvet microcalorimeter and with the following liquids: n-hexane, cyclohexane, neo-hexane, toluene, mesitylene and isodurene. A sample of non-porous graphitized carbon black (Vulcan 3G: BET area, 71.1 m2 g-1) was studied. Immersion calorimetry shows that in spite of the larger adsorptive capacity of the Amoco carbon, the sample of charcoal cloth has a higher adsorption affinity. The differences in the corresponding heats of immersion and in the adsorptive properties indicate that many of the pores in charcoal cloth are slit-shaped, whereas those in the Amoco carbon appear to be more cylindrical in shape. 1982. |
| Doi | 10.1016/0008-6223(82)90010-0 |
| Url | http://linkinghub.elsevier.com/retrieve/pii/0008622382900100 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |
| Is Qa | No |