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chromium spinel . Glass Phys Chem 36 1 86 – 91 10.1134/S1087659610010153 . 2. Mančić , L , Marinković , ZV , Vulić , P , Milošević , O 2004 The synthesis-structure relationship in the

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dehydroxylation of kaolinite and this value is corresponded with the theoretical value (13.9%), and one exothermic peak at 998 °C associated with the formation of a spinel phase that was transformed into mullite [ 20 ]. However, there are two distinct endothermic

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O 4 with the spinel structure . Acta Metall Slovaca 11 : 437 – 449 . 7. Mesíková , Ž , Šulcová , P , Trojan , M 2006 Yellow pigments based on Fe 2 TiO 5 and TiO 2 . J Therm

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have been corroborated by SEM image. Figure 2 presents a SEM image of Cu 2 In 2 O 5 . In order to show more clearly the shapes of the crystals of Cu 2 In 2 O 5 spinels, the image is presented in magnification of ×10,000. Figure 3 shows an image of

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requiers higher temperature. The final products of amosite decomposition above 900 °C (at isothermal soaking) are a spinel, hematite, magnetite, and cristobalite [ 31 , 38 ]. The thermal analysis of tremolite mainly shows an endothermic peak at ∼950 °C due

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(OH) 2 ·xH 2 O - FeC 2 O 4 ·2H 2 O . Z. Naturforsch 2008 ; 63b : 1052 – 6 . 10. See for example Kikukawa N Takemori M Nagano Y Sugasawa M Kobayashi S . Synthesis and magnetic properties of nanostructured spinel

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arrangement (ABCABC…) belongs to the spinel group of minerals [ 7 ]. Magnetite can be converted to hematite under progressive oxidation. Fe 2+ in magnetite is converted to Fe 3+ until the composition of Fe 2 O 3 is reached [ 8 ]. It is also well known that

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Invar® oxidation in CO2

Kinetics and mechanism of formation of a wüstite layer

Journal of Thermal Analysis and Calorimetry
Authors: S. Menecier, S. Valette, P. Denoirjean, and P. Lefort

crystals. Indeed, one may consider that the topotactic transformation of wüstite (fcc structure) into magnetite (spinel structure) is the consequence of the accumulation of defects inside the wüstite structure, by: 8 where represents a former ion Fe 2

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–330 370–550 635–720 For N-LDH, the forth stage ends with the conversion to the spinel oxide phase while for B-LDH and B-LDH-12 there is an additional

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10.1023/A:1022939624043 . 24. Zhao , MS , Song , XP . 2007 . Synthesizing kinetics and characteristics for spinel LiMn 2 O 4 with the precursor using as lithium-ion battery cathode

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