At 100kPa, what is the temperature at which carbon can reduce Fe2O3?

The order of thermal stability of Fe oxides is FeO>Fe3O4> Fe2O3 is reversed: Fe2O3>Fe3O4>FeO

Experiments have proved that the reduction process of iron oxide (Fe2O3) is carried out gradually, whether CO is used as the reducing agent or H2 is used as the reducing agent

The first is the reduction of Fe2O3 to Fe3O4: 3Fe2O3 + Co = 2Fe3O4 + Co2

Then Fe3O4 is reduced to FeO: Fe3O4+CO=3FeO+CO2

Finally, FEO is reduced to FE by CO: FEO+CO=FE+CO2

The total reaction is: Fe2O3+3CO=2Fe+3CO2

The data point out that the temperature is higher than 710, Fe can be stable, between 680 and 710, FeO is stable, and below 680, Fe3O4 is the main one. For the reductionability of CO and H2, it is generally believed that the temperature is lower than 810, and the reduction of CO is stronger than that of H2. Above 810, H2 is more reducible than CO.

Fe2O3 can be reduced to iron powder by introducing H2 at a condition of no more than 1050.

Figure 29 on page 134 of the third volume (first volume) of the pre-Cultural Revolution edition of high school chemistry specifically points out: "The entire reduction process of blast furnace ironmaking is completed in the furnace body of 500 800 yuan." The total reaction formula is marked with "high temperature", which is obviously the reaction condition necessary for the reduction process representing Fe3O4 Fe and especially Feo Fe.

Fe2O3 decomposes to Fe3O4 at high temperatures

6fe2o3 = 4fe3o4 + o2

This reaction can only be carried out at least above 1500 degrees.

At higher temperatures, Fe3O4 decomposes into FeO

2fe3o4 = 6feo + o2

The temperature at which this reaction proceeds is around 2200.

Continue to heat FeO to eventually decompose into Fe

2feo = 2fe + o2

This reaction proceeds at a temperature of 3400 degrees.

Summary. Carbon reduces iron oxide to produce iron and carbon dioxide.

1.Carbon reduced iron oxide 2Carbon reduced alumina 3Carbon reacts with water vapor at high temperatures4 carbon reduces iron oxide to iron and carbon dioxide.

The chemical drying formula for the reaction of charcoal and water vapor at high temperature is not sent out: c+h o(g)=(high temperature)=co+h

2) If the temperature t is equal to 801K, the carbonization is Ca(OH)2(S).

Hello dear, I'm glad to answer for you, At a temperature t equal to 801K, the carbonization Ca(OH)2(S) is: the thermochemical reaction heat of the reaction δH. According to the Thermochemical Reaction Database, Ca(OH)2(S) = CaO(S) + H2O(G) reaction thermochemical reaction heat δH = kJ mol.

Thus, the energy of the water molecules released is equal to kj mol.

Because the equation says 1mol c, and 1mol c is 12g.

m=nm=1*12=12g

Storage of CO2 (G) under constant pressure and cooling conditions can minimize the decomposition of CO2 in endothermic reactions.

Solution: Let the mass of CO2 be x

c+o2=co2

30g. x

12/30g=44/x

x=110g

A: 110g of CO2 can be obtained