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Reaction between chromium(III) oxide and oxygen in the presence of sodium carbonate

A DTA study

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Abstract

The large scale manufacture of sodium chromate is carried out by heating finely ground chromite ore mixed with sodium carbonate and lime in air. The essential reaction leading to the formation of sodium chromate is

$$2Cr_2 O_3 + 4 Na_2 CO_3 + 3 O_2 \xrightarrow{{\Delta {\rm H}_{R^0 } }}4Na_2 CrO_4 + CO_2 $$

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M. N. S. thanks La Trobe University for financial support.

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Sastri, M.N., Hill, J.O. Reaction between chromium(III) oxide and oxygen in the presence of sodium carbonate. Journal of Thermal Analysis 11, 323–326 (1977). https://doi.org/10.1007/BF01909969

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  • DOI: https://doi.org/10.1007/BF01909969

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