INHOMOGENEOUS CHARGE EFFECT ON A NATURAL MINERAL STUDIED BY XPS

Authors
RUEDA F MENDIALDUA J RODRIGUEZ A CASANOVA R BARBAUX Y GENGEMBRE L JALOWIECKI L BOUQUENIAUX D
Citation
F. Rueda et al., INHOMOGENEOUS CHARGE EFFECT ON A NATURAL MINERAL STUDIED BY XPS, Surface and interface analysis, 21(9), 1994, pp. 659-664
Citations number
28
Categorie Soggetti
Chemistry Physical
Journal title
Surface and interface analysis → ACNP
ISSN journal
01422421
Volume
21
Issue
9
Year of publication
1994
Pages
659 - 664
Database
ISI
SICI code
0142-2421(1994)21:9<659:ICEOAN>2.0.ZU;2-H
Abstract
We report on XPS results that show an inhomogeneous charge effect, gre ater than 1.0 eV and far greater than the accuracy of the measurements (approximately 0.2 eV), exhibited by a natural mineral essentially co mposed of SiO2 and Fe2O3. This mineral has proved to be an efficient c atalyst in a Fischer-Tropsch reaction. We have corrected this differen tial charge effect by using two internal references in order to interp ret satisfactorily our XPS data.