Preparation of a complete series of single phase homogeneous sol-gels of Al2O3 and MgO for basic catalysts
Por:
López T., Marmolejo R., Asomoza M., Solís S., Gómez R., Wang J.A., Bokhimi, Novaro O., Navarrete J., Llanos M.E., López E.
Publicada:
1 ene 1997
Resumen:
Homogeneous single phase sol-gels of magnesia and alumina were prepared using magnesium and aluminum alkoxides as precursors. The gels were formed through a hydrolysis reactions followed by condensation. These materials behave as basic catalysts and, therefore, are superb anionic interchangers. The solids obtained were characterized by infrared spectroscopy, thermogravimetric analysis and anionic interchange tests. No evidence for the presence of the individual binary oxides was found. An important effect on the dehydroxylation of the surface and on the anionic exchange was found as a function of alumina content in the magnesia matrix. The best sample was the one containing 50% MgO-50% Al2O3.
Filiaciones:
López T.:
Univ. Auton. Metropolitana-I., P.O. Box 55-534, México, D.F. 09340, Mexico
Marmolejo R.:
Univ. Auton. Metropolitana-I., P.O. Box 55-534, México, D.F. 09340, Mexico
Asomoza M.:
Univ. Auton. Metropolitana-I., P.O. Box 55-534, México, D.F. 09340, Mexico
Solís S.:
Univ. Auton. Metropolitana-I., P.O. Box 55-534, México, D.F. 09340, Mexico
Gómez R.:
Univ. Auton. Metropolitana-I., P.O. Box 55-534, México, D.F. 09340, Mexico
Wang J.A.:
Instituto de Fisica, UNAM, P.O. Box 20-364, Mexico, D.F. 01000, Mexico
Bokhimi:
Instituto de Fisica, UNAM, P.O. Box 20-364, Mexico, D.F. 01000, Mexico
Novaro O.:
Instituto de Fisica, UNAM, P.O. Box 20-364, Mexico, D.F. 01000, Mexico
Navarrete J.:
Inst. Mexicano del Petróleo, Eje Central Lázaro, Cárdenas 125, México D.F. 07730, Mexico
Llanos M.E.:
Inst. Mexicano del Petróleo, Eje Central Lázaro, Cárdenas 125, México D.F. 07730, Mexico
López E.:
Inst. Mexicano del Petróleo, Eje Central Lázaro, Cárdenas 125, México D.F. 07730, Mexico
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