Dimerization: Isooctane

Isooctane is produced through a dimerization reaction of isobutylene under acidic conditions at moderate temperatures. It has an octane number of 100.


After the ban of MTBE in the United States, the refining industry decided to introduce isooctane as octane booster into the gasoline. Generally the process is not too different from making MTBE. In most cases existing units for MTBE were revamped by the petrochemical industry into units producing isooctane.


CHEMRA has developed two premium catalysts for this reaction, TREVER®|LYST CAT351 and TREVER®|LYST CAT360.






Recommended catalysts



Related page: Typical properties of TREVER®|LYST polymeric catalysts.