Enhanced Adsorption of Methanol by Oxidised Nutshell Carbon
Author(s) -
A. Bailey,
Mike Williams,
Lyndsay Dunne,
Lynne Beames
Publication year - 2000
Publication title -
adsorption science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.682
H-Index - 36
eISSN - 2048-4038
pISSN - 0263-6174
DOI - 10.1260/0263617001493422
Subject(s) - chemistry , adsorption , methanol , penetration (warfare) , kinetics , nitric acid , inorganic chemistry , diffusion , water vapor , charcoal , activated carbon , organic chemistry , thermodynamics , physics , quantum mechanics , operations research , engineering
A nutshell charcoal was oxidised and reduced and the effect of the treatments on the water adsorption isotherms and methanol vapour penetration noted. Oxidation with 6 M nitric acid increased the penetration times for methanol vapour in dry air, not by just raising the dynamic capacity at low concentrations but also by improving the kinetics of adsorption. Reduction caused the opposite effect. The improvement in the adsorption kinetics is thought to be due to surface diffusion on to the oxidised surface of the transport pores.
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