Effects of hydrogen at high temperature on ZnAl2O4 and Sn-ZnAl2O4

M. A. Valenzuela; P. Bosch; B. Zapata; G. Aguilar-Ríos; V. H. Lara; E. García-Figueroa; I. Schifter

doi:10.1007/BF02636283

Effects of hydrogen at high temperature on ZnAl₂O₄ and Sn-ZnAl₂O₄

M. A. Valenzuela, P. Bosch, B. Zapata, G. Aguilar-Ríos, V. H. Lara, E. García-Figueroa, I. Schifter

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

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 Al_xZn_y 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.

Original language	English
Pages (from-to)	639-653
Number of pages	15
Journal	Journal of Thermal Analysis and Calorimetry
Volume	44
Issue number	3
DOIs	https://doi.org/10.1007/BF02636283
State	Published - Mar 1995
Externally published	Yes

Keywords

high-temperature treatments
hydrogen effects
thermal analysis (DTA, TG)
tin-zinc aluminate
zinc aluminate

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10.1007/BF02636283

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title = "Effects of hydrogen at high temperature on ZnAl2O4 and Sn-ZnAl2O4",

abstract = "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.",

keywords = "high-temperature treatments, hydrogen effects, thermal analysis (DTA, TG), tin-zinc aluminate, zinc aluminate",

author = "Valenzuela, {M. A.} and P. Bosch and B. Zapata and G. Aguilar-R{\'i}os and Lara, {V. H.} and E. Garc{\'i}a-Figueroa and I. Schifter",

year = "1995",

month = mar,

doi = "10.1007/BF02636283",

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volume = "44",

pages = "639--653",

journal = "Journal of Thermal Analysis and Calorimetry",

issn = "1388-6150",

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TY - JOUR

T1 - Effects of hydrogen at high temperature on ZnAl2O4 and Sn-ZnAl2O4

AU - Valenzuela, M. A.

AU - Bosch, P.

AU - Zapata, B.

AU - Aguilar-Ríos, G.

AU - Lara, V. H.

AU - García-Figueroa, E.

AU - Schifter, I.

PY - 1995/3

Y1 - 1995/3

N2 - 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.

AB - 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.

KW - high-temperature treatments

KW - hydrogen effects

KW - thermal analysis (DTA, TG)

KW - tin-zinc aluminate

KW - zinc aluminate

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U2 - 10.1007/BF02636283

DO - 10.1007/BF02636283

M3 - Artículo

SN - 1388-6150

VL - 44

SP - 639

EP - 653

JO - Journal of Thermal Analysis and Calorimetry

JF - Journal of Thermal Analysis and Calorimetry

IS - 3

ER -

Effects of hydrogen at high temperature on ZnAl₂O₄ and Sn-ZnAl₂O₄

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Keywords

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