Thermal analysis of smithsonite and hydrozincite

被引：58

作者：

Hales, M. C. ^{[1
]}

Frost, R. L. ^{[1
]}

机构：

[1] Queensland Univ Technol, Sch Phys & Chem Sci, Inorgan Mat Research Program, Brisbane, Qld 4001, Australia

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2008年 / 91卷 / 03期

基金：

澳大利亚研究理事会;

关键词：

aurichalcite; hydrozincite; smithsonite; TG-MS; thermal analysis; thermogravimetric analysis;

D O I：

10.1007/s10973-007-8571-0

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Thermogravimetric analysis of synthetic smithsonite and hydrozincite, two secondary minerals of zinc, was used to determine their relative thermal stability. Thermal decomposition of smithsonite occurs at 293 degrees C and hydrozincite at 220 degrees C showing that the carbonate mineral is more stable than the hydroxy-carbonate mineral hydrozincite. Hot stage Raman spectroscopy confirms the decomposition of smithsonite and hydrozincite by 300 and 250 degrees C, respectively. Thermogravimetry shows that a small amount of hydrozincite is formed during the synthesis of smithsonite. No evidence is found for the separate loss of the carbonate and hydroxyl units from hydrozincite.

引用

页码：855 / 860

页数：6

共 53 条

[1]

ADLER HH, 1963, AM MINERAL, V48, P124

[2] MINERAL FORMATION FROM AQUEOUS-SOLUTION .1. DEPOSITION OF HYDROZINCITE, ZN5(OH)6(CO3)2, FROM NATURAL-WATERS [J].

ALWAN, AK ;

WILLIAMS, PA .

TRANSITION METAL CHEMISTRY, 1979, 4 (02) :128-132

[3]

Anthony J. W., 2003, HDB MINERALOGY

[4]

BOUCHARD M, 2001, ASIAN CHEM LETT, V5, P157

[5] Thermal decomposition of the synthetic hydrotalcite woodallite [J].

Bouzaid, J. M. ;

Frost, R. L. ;

Musumeci, A. W. ;

Martens, W. N. .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2006, 86 (03) :745-749

[6] Thermal decomposition of the composite hydrotalcites of iowaite and woodallite [J].

Bouzaid, Jocelyn M. ;

Frost, R. L. ;

Martens, W. N. .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2007, 89 (02) :511-519

[7] Thermal decomposition of stichtite [J].

Bouzaid, Jocelyne ;

Frost, Ray L. .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2007, 89 (01) :133-135

[8]

FARMER VC, 1974, MINERALOGICAL SOC MO, V4

[9] Using thermally activated hydrotalcite for the uptake of phosphate from aqueous media [J].

Frost, R. L. ;

Musumeci, A. W. ;

Adebajo, M. O. ;

Martens, W. .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2007, 89 (01) :95-99

[10] Thermal decomposition of hydrotalcite with hexacyanoferrate(II) and hexacyanoferrate(III) anions in the interlayer [J].

Frost, R. L. ;

Musumeci, A. W. ;

Kloprogge, J. Theo ;

Weier, M. L. ;

Adebajo, M. O. ;

Martens, W. .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2006, 86 (01) :205-209

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