Fe2O3 Thermal Decomposition Question

In summary, The Ellingham diagrams suggest that Fe2O3 decomposes at around 1500°C, but further decomposition to iron metal may require higher temperatures. A lower temperature reaction may be possible with the presence of a reducing agent.
  • #1
BH1988
1
0
Hi, I've been asked to heat a sample that contains Fe2O3, amongst some other things, to a temperature where Fe2O3 will decompose. I am unable to find the temperature at which I would need to heat the sample and I'm not entirely convinced this is actually possible with the equipment I have available. However, it would be greatly appreciated if anyone could provide me with this temperature and if possible a reference to go with it.
Thanks :)
 
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  • #2
http://web.mit.edu/2.813/www/readings/Ellingham_diagrams.pdf
The Ellingham diagrams in the above link suggest that ##Fe_2O_3## decomposes into ##Fe_3O_4## and ##O_2## at around 1500°C. Further decomposition to iron metal probably requires several thousand degrees. If "some other things" include, e.g., carbon or another reducing agent, then you can get a redox reaction to happen at a low(-ish, but still probably around 1000°C) temperature.
 

FAQ: Fe2O3 Thermal Decomposition Question

What is the chemical equation for the thermal decomposition of Fe2O3?

The chemical equation for the thermal decomposition of Fe2O3 is 2Fe2O3 → 4Fe + 3O2. This reaction occurs when Fe2O3 is heated to high temperatures, causing it to break down into iron and oxygen gas.

At what temperature does Fe2O3 undergo thermal decomposition?

The thermal decomposition of Fe2O3 occurs at temperatures above 800°C. At this temperature, the bonds between the iron and oxygen atoms in Fe2O3 break, resulting in the formation of iron and oxygen gas.

What factors can affect the rate of Fe2O3 thermal decomposition?

The rate of Fe2O3 thermal decomposition can be affected by factors such as temperature, surface area, and the presence of catalysts. Higher temperatures and larger surface areas can increase the rate of decomposition, while the presence of catalysts can speed up the reaction.

What are the products of Fe2O3 thermal decomposition?

The products of Fe2O3 thermal decomposition are solid iron and oxygen gas. The iron can then react with oxygen in the air to form iron oxide, commonly known as rust.

What are the practical applications of Fe2O3 thermal decomposition?

Fe2O3 thermal decomposition has several practical applications, including the production of pure iron for industrial use and the production of oxygen gas. It is also used in the production of iron oxide pigments for paints and dyes.

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