BHARALI , P and SAIKIA , R and BARUAH , R K and GOSWAMI , R L
(2004)
A comparative study of thermal decomposition behaviour of Zn-Cr, Zn-Cr-Al and Zn-Al type layered double hydroxides.
J Thermal Analysis Calorimetry, 78.
pp. 831-838.
Abstract
Hydrolysis of ZnO in acidic pH provides a facile route for synthesis of layered double hydroxides
(LDH)bearingZn2+withCr3+andAl3+withouthavingcarbonateionintheinter-layer position.The
thermal decomposition of the prepared LDH show that with the increase of Cr3+ content in the
systemthereisanincreaseinthethermalstability ofthecompounds.IncaseofZn–CrLDHthereis
a non-mass loss transition around 420°C. Segregation of parent LDH structure to a bivalent oxide
and a spineltakesplacein both Zn–Cr and Zn–Al LDH only at temperatures above 550°C
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