Biblioteca de la Universidad Complutense de Madrid

Mg K-edge XANES of sepiolite and palygorskite

Impacto



Sánchez del Río, Manuel y Súarez Barrios, Mercedes y García Romero, Emilia y Alianelli, Lucia y Felici, Roberto y Martinetto, Pauline y Dooryhée, Eric y Reyes Valerio, Constantino y Borgatti, Francesco y Doyle, Bryan y Giglia, Angelo y Mahne, Nicola y Pedio, Maddalena y Nannarone, Stefano (2005) Mg K-edge XANES of sepiolite and palygorskite. Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms , 238 . pp. 55-60. ISSN 0168-583X

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Resumen

We present a study of the Mg K-edge on sepiolite and palygorskite performed at the INFM BEAR beamline at Elettra
synchrotron light source (Trieste). These two clays, although having very similar structures, show some different
features in their near-edge. Mg is in octahedral coordination with oxygens, hydroxyl groups or water, for both palygorskite
and sepiolite. The differences found in the near-edge seem to reflect the fact that, on average, an Mg atom
in palygorskite ‘‘sees’’ less Mg in higher coordination shells than sepiolite.


Tipo de documento:Artículo
Palabras clave:Sepiolite; Palygorskite; Fibrous clay; X-ray absorption spectroscopy
Materias:Ciencias > Geología > Mineralogía
Código ID:13399
Depositado:14 Oct 2011 10:16
Última Modificación:14 Oct 2011 10:16

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