[WTK28]

So I am trying to determine how much H202 and Catalase I need to combine with ethanol to completely convert all the ethanol to Acetaldehyde without leaving excess H202 and Catalase unreacted. Any ideas?

[Babcock_Hall]

Is catalase a reactant or a catalyst?  My first thought is to ask whether or not you are sure that ethanol is a substrate for catalase.  My second thought is to suggest that you look into alcohol oxidase.

[WTK28]

In short.  Catalyst.

I am trying to understand how ethanol is converted to acetaldehyde in the peroxisomes of the cell using catalase protein and H2O2, and then replicate that experiment in vitro. 

[Babcock_Hall]

Catalase converts hydrogen peroxide into water and oxygen.  I suspect that a different enzyme is responsible for oxidizing ethanol, but I don't have detailed knowledge of the peroxisomes.