Abstract
Refinery gasoline contains C5 alkanes and alkenes that are being displaced due to regulations on maximum seasonal Reid vapor pressure (RVP) limits and increased blending of ethanol. As volumes of displaced C5ʼs increase, technologies for returning C5ʼs to the gasoline or diesel pools become increasingly important. Isolation of C5 streams followed by dimerization/oligomerization of the C5 olefins is one route to return displaced C5ʼs to the gasoline pool. Large pore, acidic zeolite catalysts have been evaluated for this purpose. The process results in an overall volume loss due to volume contraction and a possible loss of research octane number (RON).
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