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Can't Enable Surface Equilibrium Reactions in Transport for Diluted Species
Posted 28.02.2022, 13:12 GMT-5 Chemical Reaction Engineering Version 5.5 0 Replies
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Hi, I've been trying to set up a simulation using the chemical engineering module on COMSOL 5.5. I am trying to recreate the two-site binding model on a silicon dioxide surface, which is governed by the chemical reactions: SiOH <=> SiO- + H+ SiOH2+ <=> SiOH + H+ I set these reactions up using the reaction engineering physics in a 0D component, then generate the space dependent model. The Chemistry and Surface Reaction physics is set up fine, but the Surface Equilibrium Reactions are greyed out under transport for diluted species (see attached photo) and can't be enabled. I have found that by adding species to the reactions then the Surface Equilibrium Reactions can be enabled, so I didn't know whether this is a specific limitation on the types of reactions. I can cahnge the reactions to reversible and set the reaction rate very high as a work around, but I was wondering if there was any way get these reactions to work as equilibrium reactions. Best, Lewis
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Hello Lewis Keeble
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