title: Ni clay neoformation on montmorillonite surface.
abstract: Polarized extended X-ray absorption fine structure spectroscopy (P-EXAFS) was used to study the sorption mechanism of Ni on the aluminous hydrous silicate montmorillonite at high ionic strength (0.3 M NaClO4), pH 8 and a Ni concentration of 0.66 mM. Highly textured self-supporting clay films were obtained by slowly filtrating a clay suspension after a reaction time of 14 days. P-EXAFS results indicate that sorbed Ni has a Ni clay-like structural environment with the same crystallographic orientation as montmorillonite layers.
authors.affiliation: Paul Scherrer Institut, Villigen, France.
authors.forename: R
authors.initials: R
authors.lastname: Dähn
authors.forename: A
authors.initials: A
authors.lastname: Scheidegger
authors.forename: A
authors.initials: A
authors.lastname: Manceau
authors.forename: M
authors.initials: M
authors.lastname: Schlegel
authors.forename: B
authors.initials: B
authors.lastname: Baeyens
authors.forename: M H
authors.initials: MH
authors.lastname: Bradbury