How to restrict the occurrence of disproportionation reactions in methanation reactions
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How to restrict the occurrence of disproportionation reactions in methanation reactions
It’s similar to trying to avoid carbon buildup, I guess. Is it still necessary to focus on catalyst technology? I remember reading somewhere that it was mentioned that a catalyst with something added to it, maybe K? I’m going back tomorrow; I’ll take a look and come back again.
Hydrating can suppress this carbon evolution reaction: CO + H2 = C + H2O
For a more detailed analysis, you can refer to this post: It turns out that carbon analysis is similar to http://bbs.hcbbs.com/thread-883608-1-1.html
The coking resulting from methanation originates from the disproportionation of CO, and it is difficult to prevent such side reactions in NI catalysts without affecting the main reaction. The solution is to remove it through its reaction with water vapor before the carbon polymerizes into graphite, by adding a co-catalyst to the catalyst formula, with K being the most effective one. However, potassium also reduces the Ni activity of the main reaction, but this is a compromise that must be accepted.