title: Adsorption of phenol on supercritically activated carbon fibres: effect of texture and surface chemistry.
abstract: The influence of texture and surface chemistry on the phenol adsorption capacity of activated carbon fibres (ACFs) was studied. ACFs were prepared by carbonization of a phenolic textile fibre under nitrogen flow, followed by activation with H(2)O and CO(2) (under atmospheric pressure and supercritical state). The materials were characterised by N(2) and CO(2) adsorption, and by temperature programmed desorption studies. A strong correlation between the amount of adsorbed phenol and the micropore volume has been observed. The relationship between surface oxygen concentration and amount of physisorbed and chemisorbed phenol was assessed, and it was shown that higher amounts of surface oxygen groups decreased the phenol chemisorption capacity of ACFs.
authors.affiliation: Laboratório de Catálise e Materiais (LCM), Laboratório Associado LSRE/LCM, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, 4200-465 Porto, Portugal. jlfig@fe.up.pt
authors.forename: J L
authors.initials: JL
authors.lastname: Figueiredo
authors.forename: N
authors.initials: N
authors.lastname: Mahata
authors.forename: M F R
authors.initials: MF
authors.lastname: Pereira
authors.forename: M J
authors.initials: MJ
authors.lastname: Sánchez Montero
authors.forename: J
authors.initials: J
authors.lastname: Montero
authors.forename: F
authors.initials: F
authors.lastname: Salvador