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XAES studies of three samples of natural aluminosilicates
dc.contributor.author | Casanova, R. | |
dc.contributor.author | Mendialdua, J. | |
dc.contributor.author | Rueda, Fulgencio | |
dc.contributor.author | Rodríguez, Alfonso | |
dc.contributor.author | Taebi, Issam | |
dc.contributor.author | Jalowiecki, Louise | |
dc.contributor.author | Lobo B., José A. | |
dc.contributor.author | Valera, José C. | |
dc.contributor.author | Michelangeli, Ela | |
dc.date.accessioned | 2022-01-12T14:29:04Z | |
dc.date.available | 2022-01-12T14:29:04Z | |
dc.date.issued | 2019-12-30 | |
dc.identifier.govdoc | PPI200602ME2232 | |
dc.identifier.issn | 1856-5301 | |
dc.identifier.uri | http://bdigital2.ula.ve:8080/xmlui/654321/6081 | |
dc.description.abstract | The potential use of XAES (X-ray excited Auger Electron Spectroscopy) for surface chemical states identification has been shown once more in this work. For this purpose, the information contained in the modified Auger parameter, together with its shifts and its direct relationship to the hole-hole correlation energy has been exploited successfully. The detailed analysis of the oxygen Auger KVV region has allowed us to characterize three natural aluminosilicate samples SLB1, VL1 and ULA1 by comparing this region to that of Fe2O3, Al2O3 and SiO2 and a mechanical mixture of these oxides. We have also clearly established that the surfaces of two of the aluminosilicates studied are not oxide mixtures, in agreement with our previous XPS works. | en_US |
dc.description.abstract | El uso potencial de la espectroscopia XAES para la identificación de estados químicos en la superficie ha sido demostrado una vez más en este trabajo. Para este propósito, la información contenida en el parámetro Auger modificado, junto con sus corrimientos y su relación directa con la energía de correlación hueco-hueco ha sido explotada exitosamente. El análisis detallado de la región del Auger KLL del oxígeno nos ha permitido caracterizar las muestras SLB1, VL1 and ULA1 al comparar esta región con la del Fe2O3, Al2O3, SiO2 y una mezcla mecánica de estos óxidos. También hemos establecido claramente que las superficies de SLB1 y VL1 no son mezclas de óxidos, en acuerdo con nuestros trabajos previos de XPS. | en_US |
dc.description.sponsorship | The authors would like to thank Ecos- Nord (France) and CONICIT (Venezuela) for funding project ECOS V99. Thanks to Dr Labrecque for supplying the certified samples VL1 and SLB1 analyzed in this work and to Prof. B. Fontal from ULA for reading the manuscript. J.M, R.C., F.R., and A.R. thank to Mr J. C. Marchal, Mr. M. Clement from Laboratoire de Catalyse hetérogene- Univetsité de Lille I-France and Mr. J. Sarmiento from ULA for their valuable technical assistance. | en_US |
dc.language.iso | en | en_US |
dc.publisher | Universidad de Los Andes | en_US |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-sa/3.0/ve/ | en_US |
dc.subject | XAES | en_US |
dc.subject | Auger parameter | en_US |
dc.subject | Oxides | en_US |
dc.subject | Correlation energy | en_US |
dc.subject | parámetro Auger | en_US |
dc.subject | óxidos | en_US |
dc.subject | energía de correlación | en_US |
dc.title | XAES studies of three samples of natural aluminosilicates | en_US |
dc.type | Article | en_US |