RT Journal Article
T1 FTIR spectroscopic study of palygorskite: Influence of thecomposition of the octahedral sheet
A1 Súarez Barrios, Mercedes
A1 García Romero, Emilia
AB The influence of chemical composition to position and intensity of the absorption bands observed in the FTIR spectra ofpalygorskite has been studied by a detailed comparative study of six samples. Palygorskites studied have high purity and differentchemical composition. At one extreme, there are two samples that correspond to Mg-rich palygorskites, at the other extreme asample with a composition very close to the theoretical formula of this mineral, and there are three further samples whose structuralformulae lie between these extremes. The position of the bands identified in the FTIR spectra of the palygorskites studied is similarfor all samples, but there are some differences in their intensity, which are significant. Analysing these intensities, valuableinformation about the distribution of cations along the octahedral sheet has been obtained. Isomorphic substitution in octahedralsheet occurs only in M2 position. Al, and Fe may occupy M2 position whereas Mg can occupy all possible sites: M1, M2 and M3.
PB Elsevier
SN 0169-1317
YR 2006
FD 2006
LK https://hdl.handle.net/20.500.14352/49741
UL https://hdl.handle.net/20.500.14352/49741
LA eng
DS Docta Complutense
RD 7 abr 2025