DOI: http://dx.doi.org/10.18257/raccefyn.85

Artículo de revisión

Caracterización de vermiculitas pilarizadas con Al-Zr, Al-Hf y Al-Ce por espectroscopía de fotoelectrones emitidos por rayos-X

Ana María Campos, Sonia Moreno, Rafael Alberto Molina

Resumen


Se utilizó la espectroscopia de fotoelectrones emitidos por rayos-X para establecer la concentración relativa y el ambiente químico de las especies introducidas en una serie de vermiculitas pilarizadas con precursores mixtos de Al-Zr, Al-Hf y Al-Ce. Las energías de enlace observadas evidenciaron que es más probable encontrar zirconio y hafniocomo Zr-O(H) - o Zr-Si-y HfO2, y que estos exhiben, además, una mayor dispersión en la superficie de la vermiculita en comparación con las especies de cerio (Ce2O3), las cuales se encuentran principalmente en el interior de las láminas de arcilla. Por un lado, el análisis químico mostró que con las soluciones de Al-Hf y Al-Zr, la introducciónde hafnio y de zirconio era completa dentro del rango de 0,5 a 2 mmol g-1 de arcilla, pero que la eficacia se reducíacon cantidades más grandes. Por otro lado, la introducción de cerio en las soluciones de Al-Ce pudo considerarse completa dentro del rango evaluado.

Palabras clave


Pillared vermiculite, zirconium, hafnium, cerium, XPS

Texto completo:

pdf (English)

Referencias


Awate S., Waghmode S., Agashe M. (2004). Synthesis, charac-terization and catalytic valuation of zirconia-pillared montmorillonite for linear alkylation of benzene. Catal. Commun. 5: 407-411.

Bottero J., Cases J., Flessinger F., Poirier J. (1980). Studies of hydrolyzed aluminum chloride solutions. Nature of aluminum species and composition of aqueous solutions. J. Phys. Chem. 84: 2933-2939.

Campos A., Gagea B., Moreno S., Jacobs P., Molina R. (2007). Hydroisomerization of decane on Pt/Al,Ce-pillared ver-miculites. Stud. Surf. Sci. Catal. 170: 1405-1409.

Campos A., Moreno S., Molina R. (2008a). Relationship between hydrothermal treatment parameters as a strategy to reduce layer charge in vermiculite, and its catalytic behavior. Catal. Today. 133-135: 351-356.

Campos A., Gagea B., Moreno S., Jacobs P., Molina R. (2008b). Decane hydroconversion with Al-Zr, Al-Hf, Al-Ce-pillared vermiculites. Appl. Catal. A. 345: 112-118.

Campos A., Moreno S., Molina R. (2009). Characterization of vermiculite by XRD and spectroscopic techniques. Earth Sci. Res. J. 13:108-118.

Chmielarz L., Kus ́trowski P., Michalik M., Dudek B., Piwowarska Z., Dziembaj R. (2007). Vermiculites intercalated with Al2O3 pillars and modified with transition metals as catalysts of DeNOx process. Catal. Today. 137: 242-246.

Cool P., Clearfield A., Mariagnanam V., Ellistrem L., Crooks R., Vansant E. (1997). Self-assembly of aluminium-pillared clay on a gold support. J. Mater. Chem. 7: 443-448.

Cristiano D., Campos A., Molina R. (2005). Charge reduction in a vermiculite by acid and hydrothermal methods: A comparative study. J. Phys. Chem B. 109: 19026-19033.

Damyanova S., Petrov L., Grange P. (2003). XPS characterization of zirconium-promoted CoMo hydrodesulfurization catalysts. Appl. Catal. A. 239: 241-252.

Deshpande A., Inman R., Jursich G., Takoudis C. (2006). Characterization of hafnium oxide grown on silicon by atomic layer deposition: Interface structure. Microelectron. Eng. 83: 547-552.

Fuentes D., Santamaría J., Mérida J., Rodríguez F., Jiménez A., Maireles P., Moreno R., Mariscal R. (2006). Evaluation of the acid properties of porous zirconium-doped and undoped silica materials. J. Solid State Chem. 179: 2182-2189.

González A., Espinòs J., Munuera G., Sanz J., Serratosa J. (1988). Bonding-state characterization of constituent elements in phyllosilicate minerals by XPS and NMR. J. Phys. Chem. 92: 3471-3476.

Hernández W., Moreno S., Molina R. (2007). Modificación y caracterización de una vermiculita colombiana con especies de titanio, zirconio y sulfato. Rev. Col. Quím. 36:73-91.

Hernández W., Centeno M., Odriozola J., Moreno S., Molina R. (2008). Acidity characterization of a titanium and sulfate modified vermiculite. Mater. Res. Bull. 43:1630-1640.

Jhons W. & Gier S. (2001). X-ray photoelectron spectroscopic study of layer charge magnitude in micas and illite-smectite clays. Clay Miner. 36: 355-367.

Jiménez M., Pérez-Rodríguez J., Poyato J., Pérez-Maqueda L., Ramírez V., Justo A., Lerf A., Wagner F. (2005). Effect of ultrasound on preparation of porous materials from vermiculite. Appl. Clay Sci. 30: 11-20.

Jolivet J., Henry M., Livage J. (1994). De la solution á l’oxyde. Intermédiations, Paris, p. 68.Gier S. & Johns W. (2000). Heavy metal-adsorption on micas and clay minerals studied by X-ray photoelectron spectroscopy. Appl. Clay Sci. 16: 289-299.

Hashimoto K., Matzuo K., Kominami H., Kera Y. (1997). Cerium oxides incorporated into zeolite cavities and their reactivity. J. Chem. Soc., Faraday Trans. 93: 3729-3732.

He H., Zhou Q., Frost R., Wood B., Duong L., Kloprogge J. (2007). A X-ray spectroscopy study of HDTMAB distribution within organoclays. Spectrochim. Acta, Part A. 66: 1180-1188.

Lee P., Dai J., Wong K., Chan H., Choy C. (2003). Growth and characterization of Hf-aluminate high-k gate dielectric ultrathin films with equivalent oxide thickness less than 10 Å. J. Appl. Phys. 93: 3665-3667.

Mamede A., Payen E., Grange P., Poncelet G., Ion A., Alifanti M., Pârvulescu V. (2004). Characterization of WOx/CeO2catalysts and their reactivity in the isomerization of hexane J. Catal. 223: 1-12. B. & Rao G. (2003). Influence of synthesis conditions and cerium incorporation on the properties of Zr-pillared clays. J. Porous Mater. 10: 93-103.

Mishra B. & Rao G. (2005). Cerium containing Al- and Zr-pillared clays: Promoting effect of cerium (III) ions on structural and catalytic properties. J. Porous Mater. 12: 171-181.

Pandolfi L., Cafarelli P., Kasiulis S., Tomlinson A. (2008). XPS analysis of several zeolites and clay-based nanoporous materials for C4 hydrocarbon conversions. Microporous Mesoporous Mater. 110: 64-71.

Purceno A., Teixeira A., Souza A., Ardisson J., Mesquita J., Lago R. (2012). Ground vermiculite for the Fenton reaction. Appl.Clay Sci. 69: 87-92.

Renault O., Samour D., Rouchon D., Holliger P., Papon A., Blind D., Marthon S. (2003). Interface properties of ultra-thin HfO2 films grown by atomic layer deposition on SiO2/Si Thin Solid Films. 428: 190-194.

del Rey-Pérez-Caballero F. & Poncelet G. (2000a). Microporous 18 Å Al-pillared vermiculites: Preparation and characteri-zation. Microporous Mesoporous Mater. 37: 313-327.

del Rey-Pérez-Caballero F. & Poncelet G. (2000b). Preparation and characterization of microporous 18 Å Al-pillared structures from natural phlogopite micas. Microp. Mesop. Mater. 41:169-181.

del Rey-Pérez-Caballero F., Sánchez M., Poncelet G. (2000c). Hydroisomerization of octane on Pt/Al-pillared vermiculite, and comparison with zeolites. Stud. Surf. Sci. Catal. 130: 2417-2422.

Scofield J. (1976). Hartree-Slater subshell photoionization cross-sections at 1254 and 1487 eV. J. Electron Spectrosc. Relat. Phenom. 8: 129-137.

Suvorov D. & Skurikhin V. (2003). Vermiculite: A promising material for high-temperature heat insulators. Refract. Ind. Ceram. 44: 186-193.

Tanabe K., Misono M., Ono Y., Hattori H. (1989). New Solids Acids and Bases: Their Catalytic Properties. Stud. Surf. Sci. Catal., Elsevier, Amsterdam, 51: 108.

Trombetta M., Lenarda M., Storaro L., Gonzerla R., Piovesan L., Jiménez A., Alcántara M., Rodríguez E. (2000). Solid acid catalysts from clays: Evaluation of surface acidity of mono- and bi-pillared smectites by FT-IR spectroscopy measurements, NH3-TPD and catalytic tests. Appl. Catal. A. 193: 55-69.

Valášková, M., Tokarský, J., Hundáková, M., Zdrálková, J., Smetana, B. (2013). Role of vermiculite and zirconium–vermiculite on the formation of zircon–cordierite nano-composites. Appl. Clay Sci. 75–76: 100-108.

Vicente, M. A., Gil, A., Bergaya, F. (2013). Chapter 10.5 - Pillared Clays and Clay Minerals. Developments in Clay Science. B. Faïza and L. Gerhard (¿editors?) Elsevier. 5: 523-557.

Wagner C. (1990). Practical Surface Analysis. Second ediction. J. Wiley and Sons (Eds). (¿Ciudad? ¿Páginas?).

Weckhuysen B., Van Der Voort P., Catana G. (2000). Spec-troscopy of Transition Metal Ions on Surfaces. Leuven University Press. Belgium.Yakamoto K., Hayashi S., Kubota M., Niwa M. (2002). Effect of Hf metal predeposition on the properties of sputtered HfO2/Hf stacked gate dielectrics Appl. Phys. Lett. 81: 2053-2056.

Younes M., Ghorbel A., Rives A., Hubaut R. (2003). Comparative study of the acidity of sulphated zirconia supported on alumina prepared by sol-gel and impregnation methods. J.Sol-Gel Sci. Technol. 26: 677-680.


Métricas de artículo

Cargando métricas ...

Metrics powered by PLOS ALM




Copyright (c) 2015 Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales