Контекст:

Some reactions are more desirable to promote for reasons other than that of octane enhancement. The isomerization of cyclo-hexane to methyl cyclo-pentane and subsequent ring opening to n-hexane is a desired reaction in an isomerization reactor despite its loss in octane. The reason being that methyl cyclo-pentane and cyclo-hexane form very stable carbo-cations which will occupy acid sites on the catalyst and prevent those sites from being utilized for paraffin isomerization.

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