2026-06-28T10:09:12Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/497392023-08-25T17:08:28Zcom_20.500.14352_14col_20.500.14352_15

Mg K-edge XANES of sepiolite and palygorskite Sánchez del Río, Manuel Súarez Barrios, Mercedes García Romero, Emilia Alianelli, Lucia Felici, Roberto Martinetto, Pauline Dooryhée, Eric Reyes Valerio, Constantino Borgatti, Francesco Doyle, Bryan Giglia, Angelo Mahne, Nicola Pedio, Maddalena Nannarone, Stefano 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. 2023-06-20T09:30:06Z 2023-06-20T09:30:06Z 2005 journal article 0168-583X 10.1016/j.nimb.2005.06.018 https://hdl.handle.net/20.500.14352/49739 http://www.elsevier.com/locate/nimb eng open access Elsevier