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Study on disproportionation reaction of Fe_(1-x)O by DSC

Wenfeng Han

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Abstract

The influence of disproportionation temperature and disproportionation rate of wustite(Fe1-xO) and the promoters on disproportionation was investigated by means of differential scanning calorimetry(DSC).The results showed that the disproportionation rate decreased with the increase of Fe2+/Fe3+ vacancy concentration.The promoters such as CaO,MgO,ZrO2 and V2O5 possessed strong inhibition for Fe1-xO disproportionation due to their good solubility in iron oxide crystal,and Al2O3,TiO2,K2O,CeO2 and mixed rare earth oxide had weak inhibition for the disproportionation;the combined use of multi-promoters could effectively inhibited Fe1-xO disproportionation.Disproportionation temperature of different catalysts were almost the same;The initial temperature,peak temperature and final temperature were generally about 260 ℃,320 ℃ and 400 ℃,respectively.

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What this paper is about

The influence of disproportionation temperature and disproportionation rate of wustite(Fe1-xO) and the promoters on disproportionation was investigated by means of differential scanning calorimetry(DSC).The results showed that the disproportionation rate decreased with the increase of Fe2+/Fe3+ vacancy concentration.The promoters such as CaO,MgO,ZrO2 and V2O5 possessed strong inhibition for Fe1-xO disproportionation due to their good solubility in iron oxide crystal,and Al2O3,TiO2,K2O,CeO2 and mixed rare earth oxide had weak inhibition for the disproportionation;the combined use of multi-promoters could effectively inhibited Fe1-xO disproportionation.Disproportionation temperature of different catalysts were almost the same;The initial temperature,peak temperature and final temperature were generally about 260 ℃,320 ℃ and 400 ℃,respectively.

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Available abstract

The influence of disproportionation temperature and disproportionation rate of wustite(Fe1-xO) and the promoters on disproportionation was investigated by means of differential scanning calorimetry(DSC).The results showed that the disproportionation rate decreased with the increase of Fe2+/Fe3+ vacancy concentration.The promoters such as CaO,MgO,ZrO2 and V2O5 possessed strong inhibition for Fe1-xO disproportionation due to their good solubility in iron oxide crystal,and Al2O3,TiO2,K2O,CeO2 and mixed rare earth oxide had weak inhibition for the disproportionation;the combined use of multi-promoters could effectively inhibited Fe1-xO disproportionation.Disproportionation temperature of different catalysts were almost the same;The initial temperature,peak temperature and final temperature were generally about 260 ℃,320 ℃ and 400 ℃,respectively.

Key concepts: Disproportionation, Differential scanning calorimetry, Catalysis, Oxide, Chemistry, Radical disproportionation, Inorganic chemistry, Materials science

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