Abstract
Gas chromatography has been used to study the adsorption of C2–C6 n-alkenes and methanol by activated carbons. Although the higher alkenes adsorb non-specifically only, ethene can also undergo specific interactions with hydroxyl surface sites. The adsorption of alcohols is effected by both adsorbate–adsorbent and adsorbate–adsorbate interactions to such an extent that only in the case of methanol is it possible to obtain reliable chromatographic results. Methanol can undergo specific interactions with both hydroxyl and carbonyl surface sites. The use of methanol and ethene in combination can be used to follow changes in surface polarity brought about by surface modification procedures.
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References
1.
Bansal
R.C.
Dhami
T.L.
Parkash
S.
(1977 ) Carbon 15 , 157 .
2.
Bansal
R.C.
Bhatia
N.
Dhami
T.L.
(1978 ) Carbon 16 , 65 .
3.
Bansal
R.C.
Donnet
J.B.
Stoeckli
H.F.
(1988 ) Active Carbon , Marcel Dekker , New York .
4.
Barton
S.S.
Gillespie
D.J.
Harrison
B.H.
(1973 ) Carbon 11 , 649 .
5.
Conder
J.R.
Young
C.L.
(1979 ) Physicochemical Measurement by Gas Chromatography , Wiley–Interscience , Chichester .
6.
Carrott
P.J.M.
Sing
K.S.W.
(1987 ) J. Chromatogr. 406 , 139 .
7.
Everett
D.H.
Powl
J.C.
(1976 ) J. Chem. Soc., Faraday Trans. 1 72 , 619 .
8.
Everett
D.H.
Fletcher
A.J.P.
(1986 ) J. Chem. Soc., Faraday Trans. 1 82 , 2605 .
9.
da Silva
A.M. Gonçalves
Carrott
M.M.L. Ribeiro
Carrott
P.J.M.
de Carvalho
M.M. Brotas
Unpublished results.
10.
Gregg
S.J.
Sing
K.S.W.
(1982 ) Adsorption, Surface Area and Porosity , 2nd Edn , Academic Press , London .
11.
Kiselev
A.V.
(1967 ) Adv. Chromatogr. 4 , 113 .
12.
Kraehenbuhl
F.
Quellet
C.
Schmitter
B.
Stoeckli
H.F.
(1986 ) J. Chem. Soc., Faraday Trans. 1 82 , 3439 .
13.
Rozwadowski
M.
Wojsz
R.
(1981 ) Carbon 19 , 383 .