ZSM-5 olefins and other octane maximizer?

do you even know what ZSM-5 is? It is not an additive to gasoline, it is a catalyst used to increase yields it is not lost or consumed. In the production of ethanol, biological enzymes are added to the fermentation system to increase yields to. These enzymes are very expensive. Enzymes are the only way we can convert cellulose to ethanol and because the enzymes cost so much, cellulose ethanol costs over $10/gallon to make.