Modification of Hg complexes in layered silicates with temperature: An in situ XAS study

6Citations
Citations of this article
5Readers
Mendeley users who have this article in their library.
Get full text

Abstract

This work will address the thermal evolution (variation in oxidation state, disproportionation reactions) of Hg(II), adsorbed by two different layer silicates (montmorillonite and vermiculite) via XAS spectroscopy at increasing temperature. From the XANES analysis we could recognize significant structural differences between Hg-treated montmorillonite and vermiculite even at room temperature. At increasing temperature Hg is not easily removed from the silicate layer and it could be identified in layer structure up to T = 400 °C in montmorillonite and up to T = 700 °C in vermiculite. Furthermore, it is evident from EXAFS spectra collected at room temperature that Hg-H2O complexes are present in both montmorillonite and vermiculite, whereas the HgO form appears only in vermiculite. © 2007 Elsevier Inc. All rights reserved.

Cite

CITATION STYLE

APA

Malferrari, D., Brigatti, M. F., Marcelli, A., Chu, W., & Wu, Z. (2008). Modification of Hg complexes in layered silicates with temperature: An in situ XAS study. Microporous and Mesoporous Materials, 107(1–2), 128–133. https://doi.org/10.1016/j.micromeso.2007.05.020

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free