Correct. That's the same way I read that comment. More fundamentally, chemical catalysts by definition are not consumed by the reactions they catalyze. Think:

Correct. That's the same way I read that comment. More fundamentally, chemical catalysts by definition are not consumed by the reactions they catalyze. Think: a cheese grater. It doesn't react with the cheese, so a few ounces of grater could make hundreds of pounds of grilled cheese. A hypothetical 300 tons of catalyst is not limited stoichiometrically to how much substrate it would affect.