DSC and high-resolution Tg of synthesized hydrotalcites of Mg and Zn

被引：71

作者：

Frost, RL ^{[1
]}

Martens, W ^{[1
]}

Ding, Z ^{[1
]}

Kloprogge, JT ^{[1
]}

机构：

[1] Queensland Univ Technol, Ctr Instrumental & Dev Chem, Brisbane, Qld 4001, Australia

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2003年 / 71卷 / 02期

关键词：

dehydration; dehydroxylation; differential scanning calorimetry; high-resolution thermogravimetric analysis; hydrotalcite;

D O I：

10.1023/A:1022835305846

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A combination of DSC and high resolution DTG coupled to a gas evolution mass spectrometer has been used to study the thermal properties of a series of Mg/Zn hydrotalcites of formulae MgxZn6-xAl2(OH)(16)(CO3).4H(2)O where x varied from 6 to 0. The effect of increased Zn composition results in the decrease of the endotherms and mass loss steps to lower temperatures. Evolved gas mass spectrometry shows that water is lost in a number of steps. The interlayer carbonate anion is lost simultaneously with hydroxyl units.

引用

页码：429 / 438

页数：10

共 9 条

[1]

BECK CW, 1950, AM MINERAL, V35, P985

[2] Thermal behaviour of hydroxides, hydroxysalts and hydrotalcites [J].

Bera, P ;

Rajamathi, M ;

Hegde, MS ;

Kamath, PV .

BULLETIN OF MATERIALS SCIENCE, 2000, 23 (02) :141-145

[3] THERMAL-BEHAVIOR OF HYDROTALCITE AND OF ANION-EXCHANGED FORMS OF HYDROTALCITE [J].

BRINDLEY, GW ;

KIKKAWA, S .

CLAYS AND CLAY MINERALS, 1980, 28 (02) :87-91

[4]

Caillère S, 1944, CR HEBD ACAD SCI, V219, P256

[5] Effect of hydroxides and hydroxycarbonate structure on fire retardant effectiveness and mechanical properties in ethylene-vinyl acetate copolymer [J].

Camino, G ;

Maffezzoli, A ;

Braglia, M ;

De Lazzaro, M ;

Zammarano, M .

POLYMER DEGRADATION AND STABILITY, 2001, 74 (03) :457-464

[6] The effects of various hydrothermal treatments on magnesium-aluminium hydrotalcites [J].

Hickey, L ;

Kloprogge, JT ;

Frost, RL .

JOURNAL OF MATERIALS SCIENCE, 2000, 35 (17) :4347-4355

[7]

Kloprogge JT, 1999, APPL CATAL A-GEN, V184, P61

[8]

Kloprogge JT, 1999, PHYS CHEM CHEM PHYS, V1, P1641

[9]

ROSS GJ, 1967, AM MINERAL, V52, P1036

← 1 →