Effects of hydrogen at high temperature on ZnAl2O4 and Sn-ZnAl2O4
Por:
Valenzuela M.A., Bosch P., Zapata B., Aguilar-Ríos G., Lara V.H., García-Figueroa E., Schifter I.
Publicada:
1 ene 1995
Resumen:
ZnAl2O4 and Sn-ZnAl2O4 were synthesized by coprecipitation, sol-gel and impregnation methods. These materials were calcined and treated in H2 at 1073 K. Thermal analysis (DTA and TG), nitrogen physisorption (BET method), X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used as characterization techniques. H2 treatment promoted AlxZny crystallization in the coprecipitated and impregnated samples. When tin was added to zinc aluminate, the tin acted as a protective shell against high-temperature reduction, independently of the preparation technique. © 1995 Akadémiai Kiadó.
Filiaciones:
Valenzuela M.A.:
Instituto Mexicano del Petróleo, A.P. 14805, México, 07730, D. F., Mexico
Bosch P.:
Universidad Autónoma Metropolitana-I, A. P. 53534, México, 09340, D. F., Mexico
Zapata B.:
Instituto Mexicano del Petróleo, A.P. 14805, México, 07730, D. F., Mexico
Aguilar-Ríos G.:
Instituto Mexicano del Petróleo, A.P. 14805, México, 07730, D. F., Mexico
Lara V.H.:
Universidad Autónoma Metropolitana-I, A. P. 53534, México, 09340, D. F., Mexico
García-Figueroa E.:
Universidad Autónoma Metropolitana-I, A. P. 53534, México, 09340, D. F., Mexico
Schifter I.:
Instituto Mexicano del Petróleo, A.P. 14805, México, 07730, D. F., Mexico
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