Thermal decomposition of the natural hydrotalcites carrboydite and hydrohonessite

Ray L. Frost; Matt L. Weier; Meagan E. Clissold; Peter A. Williams; J. T. Kloprogge

doi:10.1016/S0040-6031(03)00262-4

Thermal decomposition of the natural hydrotalcites carrboydite and hydrohonessite

Ray L. Frost
, Matt L. Weier
, Meagan E. Clissold
, Peter A. Williams
, J. T. Kloprogge

Research output: Contribution to journal › Article

37 Citations (Scopus)

Abstract

A combination of high-resolution thermogravimetric analysis (HRTGA) coupled to a gas evolution mass spectrometer combined with infrared emission spectroscopy has been used to study the thermal decomposition of two Australian hydrotalcites carrboydite (NiÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬ AlÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬Å¡(SOÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬Å¾,COÃƒÂ¢Ã¢â‚¬Å¡Ã†')(OH)ÃƒÂ¢Ã¢â‚¬Å¡Ã‚ÂÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬ ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ‚Â·4HÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬Å¡O) and hydrohonessite (NiÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬ FeÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬Å¡(SOÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬Å¾,COÃƒÂ¢Ã¢â‚¬Å¡Ã†')(OH)ÃƒÂ¢Ã¢â‚¬Å¡Ã‚ÂÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬ ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ‚Â·7HÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬Å¡O). High-resolution thermal analysis shows the decomposition takes place in five steps. Each step is related to the loss of water, hydroxyl units, carbonate and sulphate. Infrared emission spectroscopy clearly identifies the presence of these molecular species and the temperature at which they are lost. Minor amounts of carbonate are observed in the minerals. Water is in two states in the structure, namely weakly hydrogen bonded and strongly hydrogen bonded. The symmetry of the sulphate anion is reduced through this hydrogen bonding.

Original language	English
Number of pages	9
Journal	Thermochimica Acta
DOIs	https://doi.org/10.1016/S0040-6031(03)00262-4
Publication status	Published - 2003

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Keywords

Carrboydite
Hydrohonessite
Hydrotalcite
Thermogravimetry
infrared spectroscopy
thermal analysis

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10.1016/S0040-6031(03)00262-4

Cite this

@article{42ec575fdf41443d990d63410c0eb991,

title = "Thermal decomposition of the natural hydrotalcites carrboydite and hydrohonessite",

abstract = "A combination of high-resolution thermogravimetric analysis (HRTGA) coupled to a gas evolution mass spectrometer combined with infrared emission spectroscopy has been used to study the thermal decomposition of two Australian hydrotalcites carrboydite (Ni{\~A}ƒ{\^A}¢{\~A}¢{\^a}‚¬{\AA}¡{\~A}¢{\^a}‚¬ Al{\~A}ƒ{\^A}¢{\~A}¢{\^a}‚¬{\AA}¡{\~A}¢{\^a}‚¬{\AA}¡(SO{\~A}ƒ{\^A}¢{\~A}¢{\^a}‚¬{\AA}¡{\~A}¢{\^a}‚¬{\AA}¾,CO{\~A}ƒ{\^A}¢{\~A}¢{\^a}‚¬{\AA}¡{\~A}†')(OH){\~A}ƒ{\^A}¢{\~A}¢{\^a}‚¬{\AA}¡{\~A}‚{\^A}{\~A}ƒ{\^A}¢{\~A}¢{\^a}‚¬{\AA}¡{\~A}¢{\^a}‚¬ {\~A}ƒ{\AE}{\textquoteright}{\~A}¢{\^a}‚¬{\AA}¡{\~A}ƒ{"}{\v s}{\~A}‚{\^A}·4H{\~A}ƒ{\^A}¢{\~A}¢{\^a}‚¬{\AA}¡{\~A}¢{\^a}‚¬{\AA}¡O) and hydrohonessite (Ni{\~A}ƒ{\^A}¢{\~A}¢{\^a}‚¬{\AA}¡{\~A}¢{\^a}‚¬ Fe{\~A}ƒ{\^A}¢{\~A}¢{\^a}‚¬{\AA}¡{\~A}¢{\^a}‚¬{\AA}¡(SO{\~A}ƒ{\^A}¢{\~A}¢{\^a}‚¬{\AA}¡{\~A}¢{\^a}‚¬{\AA}¾,CO{\~A}ƒ{\^A}¢{\~A}¢{\^a}‚¬{\AA}¡{\~A}†')(OH){\~A}ƒ{\^A}¢{\~A}¢{\^a}‚¬{\AA}¡{\~A}‚{\^A}{\~A}ƒ{\^A}¢{\~A}¢{\^a}‚¬{\AA}¡{\~A}¢{\^a}‚¬ {\~A}ƒ{\AE}{\textquoteright}{\~A}¢{\^a}‚¬{\AA}¡{\~A}ƒ{"}{\v s}{\~A}‚{\^A}·7H{\~A}ƒ{\^A}¢{\~A}¢{\^a}‚¬{\AA}¡{\~A}¢{\^a}‚¬{\AA}¡O). High-resolution thermal analysis shows the decomposition takes place in five steps. Each step is related to the loss of water, hydroxyl units, carbonate and sulphate. Infrared emission spectroscopy clearly identifies the presence of these molecular species and the temperature at which they are lost. Minor amounts of carbonate are observed in the minerals. Water is in two states in the structure, namely weakly hydrogen bonded and strongly hydrogen bonded. The symmetry of the sulphate anion is reduced through this hydrogen bonding.",

keywords = "Carrboydite, Hydrohonessite, Hydrotalcite, Thermogravimetry, infrared spectroscopy, thermal analysis",

author = "Frost, \{Ray L.\} and Weier, \{Matt L.\} and Clissold, \{Meagan E.\} and Williams, \{Peter A.\} and Kloprogge, \{J. T.\}",

year = "2003",

doi = "10.1016/S0040-6031(03)00262-4",

language = "English",

journal = "Thermochimica Acta",

issn = "0040-6031",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Thermal decomposition of the natural hydrotalcites carrboydite and hydrohonessite

AU - Frost, Ray L.

AU - Weier, Matt L.

AU - Clissold, Meagan E.

AU - Williams, Peter A.

AU - Kloprogge, J. T.

PY - 2003

Y1 - 2003

N2 - A combination of high-resolution thermogravimetric analysis (HRTGA) coupled to a gas evolution mass spectrometer combined with infrared emission spectroscopy has been used to study the thermal decomposition of two Australian hydrotalcites carrboydite (NiÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬ AlÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬Å¡(SOÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬Å¾,COÃƒÂ¢Ã¢â‚¬Å¡Ã†')(OH)ÃƒÂ¢Ã¢â‚¬Å¡Ã‚ÂÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬ ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ‚Â·4HÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬Å¡O) and hydrohonessite (NiÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬ FeÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬Å¡(SOÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬Å¾,COÃƒÂ¢Ã¢â‚¬Å¡Ã†')(OH)ÃƒÂ¢Ã¢â‚¬Å¡Ã‚ÂÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬ ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ‚Â·7HÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬Å¡O). High-resolution thermal analysis shows the decomposition takes place in five steps. Each step is related to the loss of water, hydroxyl units, carbonate and sulphate. Infrared emission spectroscopy clearly identifies the presence of these molecular species and the temperature at which they are lost. Minor amounts of carbonate are observed in the minerals. Water is in two states in the structure, namely weakly hydrogen bonded and strongly hydrogen bonded. The symmetry of the sulphate anion is reduced through this hydrogen bonding.

AB - A combination of high-resolution thermogravimetric analysis (HRTGA) coupled to a gas evolution mass spectrometer combined with infrared emission spectroscopy has been used to study the thermal decomposition of two Australian hydrotalcites carrboydite (NiÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬ AlÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬Å¡(SOÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬Å¾,COÃƒÂ¢Ã¢â‚¬Å¡Ã†')(OH)ÃƒÂ¢Ã¢â‚¬Å¡Ã‚ÂÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬ ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ‚Â·4HÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬Å¡O) and hydrohonessite (NiÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬ FeÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬Å¡(SOÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬Å¾,COÃƒÂ¢Ã¢â‚¬Å¡Ã†')(OH)ÃƒÂ¢Ã¢â‚¬Å¡Ã‚ÂÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬ ÃƒÆ’Ã¢â‚¬Å¡Ãƒ"šÃ‚Â·7HÃƒÂ¢Ã¢â‚¬Å¡Ã¢â‚¬Å¡O). High-resolution thermal analysis shows the decomposition takes place in five steps. Each step is related to the loss of water, hydroxyl units, carbonate and sulphate. Infrared emission spectroscopy clearly identifies the presence of these molecular species and the temperature at which they are lost. Minor amounts of carbonate are observed in the minerals. Water is in two states in the structure, namely weakly hydrogen bonded and strongly hydrogen bonded. The symmetry of the sulphate anion is reduced through this hydrogen bonding.

KW - Carrboydite

KW - Hydrohonessite

KW - Hydrotalcite

KW - Thermogravimetry

KW - infrared spectroscopy

KW - thermal analysis

UR - http://handle.uws.edu.au:8081/1959.7/10711

U2 - 10.1016/S0040-6031(03)00262-4

DO - 10.1016/S0040-6031(03)00262-4

M3 - Article

SN - 0040-6031

JO - Thermochimica Acta

JF - Thermochimica Acta

ER -

Thermal decomposition of the natural hydrotalcites carrboydite and hydrohonessite

Abstract

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Keywords

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