Sulfidation reaction
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Is the presulfurization reaction a reversible reaction? Does this reaction occur during normal production?
Is this reaction a reversible reaction?
The sulfidation reaction of molybdenum oxide is definitely a reversible reaction; otherwise, there would be no desulfidation of molybdenum sulfide. This reaction also occurs during normal production, only to a lesser extent.
Then why is there no hydrogen in the product when the reverse sulfidation reaction is generally described?
The products of the reverse reaction of the sulfidation reaction MoO3 + 2H2S + H2 = MoS2 + 3H2O are MoO3, 2H2S, and H2. At high temperatures, MoO3 is easily reduced to MoO2 by H2; this is how the reverse sulfidation reaction equation MoS2 + 2H2O = MoO2 + 2H2S comes about. It is essentially the reverse reaction of the sulfidation reaction, with the product MoO3 being further reduced to MoO2 by H2.
I see, thank you so much! I’ve learned something