Thermal decomposition of Mg-Al hydroxides coprecipitated in the presence of oxalate ions

E. Traversa; P. Nunziante; G. Chiozzini

doi:10.1016/0040-6031(92)80247-T

Thermal decomposition of Mg-Al hydroxides coprecipitated in the presence of oxalate ions

E. Traversa^*, P. Nunziante, G. Chiozzini

^*Corresponding author for this work

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

14 Scopus citations

Abstract

The thermal decomposition of Mg-Al hydroxides coprecipitated from nitrate solutions in the presence of oxalate ions has been studied. Samples were prepared with Mg/Al atomic ratios of 2:1 and 1:2. The coprecipitation products were always characterized by the presence of an Mg-Al mixed hydroxide containing oxalate ions in the interlayer sheet. Decomposition of the separately precipitated mixed phase passes through formation of the corresponding carbonated phase before reaching MgO and MgAl₂O₄. The mechanism of spinel formation from thermal decomposition of hydroxide mixtures is strongly influenced by the presence of oxalate ions in the mixed phase.

Original language	English (US)
Pages (from-to)	25-33
Number of pages	9
Journal	Thermochimica Acta
Volume	199
Issue number	C
DOIs	https://doi.org/10.1016/0040-6031(92)80247-T
State	Published - May 1 1992
Externally published	Yes

ASJC Scopus subject areas

Instrumentation
Condensed Matter Physics
Physical and Theoretical Chemistry

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title = "Thermal decomposition of Mg-Al hydroxides coprecipitated in the presence of oxalate ions",

abstract = "The thermal decomposition of Mg-Al hydroxides coprecipitated from nitrate solutions in the presence of oxalate ions has been studied. Samples were prepared with Mg/Al atomic ratios of 2:1 and 1:2. The coprecipitation products were always characterized by the presence of an Mg-Al mixed hydroxide containing oxalate ions in the interlayer sheet. Decomposition of the separately precipitated mixed phase passes through formation of the corresponding carbonated phase before reaching MgO and MgAl2O4. The mechanism of spinel formation from thermal decomposition of hydroxide mixtures is strongly influenced by the presence of oxalate ions in the mixed phase.",

author = "E. Traversa and P. Nunziante and G. Chiozzini",

year = "1992",

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doi = "10.1016/0040-6031(92)80247-T",

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T1 - Thermal decomposition of Mg-Al hydroxides coprecipitated in the presence of oxalate ions

AU - Traversa, E.

AU - Nunziante, P.

AU - Chiozzini, G.

PY - 1992/5/1

Y1 - 1992/5/1

N2 - The thermal decomposition of Mg-Al hydroxides coprecipitated from nitrate solutions in the presence of oxalate ions has been studied. Samples were prepared with Mg/Al atomic ratios of 2:1 and 1:2. The coprecipitation products were always characterized by the presence of an Mg-Al mixed hydroxide containing oxalate ions in the interlayer sheet. Decomposition of the separately precipitated mixed phase passes through formation of the corresponding carbonated phase before reaching MgO and MgAl2O4. The mechanism of spinel formation from thermal decomposition of hydroxide mixtures is strongly influenced by the presence of oxalate ions in the mixed phase.

AB - The thermal decomposition of Mg-Al hydroxides coprecipitated from nitrate solutions in the presence of oxalate ions has been studied. Samples were prepared with Mg/Al atomic ratios of 2:1 and 1:2. The coprecipitation products were always characterized by the presence of an Mg-Al mixed hydroxide containing oxalate ions in the interlayer sheet. Decomposition of the separately precipitated mixed phase passes through formation of the corresponding carbonated phase before reaching MgO and MgAl2O4. The mechanism of spinel formation from thermal decomposition of hydroxide mixtures is strongly influenced by the presence of oxalate ions in the mixed phase.

UR - http://www.scopus.com/inward/record.url?scp=0013482718&partnerID=8YFLogxK

U2 - 10.1016/0040-6031(92)80247-T

DO - 10.1016/0040-6031(92)80247-T

M3 - Article

AN - SCOPUS:0013482718

SN - 0040-6031

VL - 199

SP - 25

EP - 33

JO - Thermochimica Acta

JF - Thermochimica Acta

IS - C

ER -

Thermal decomposition of Mg-Al hydroxides coprecipitated in the presence of oxalate ions

Abstract

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