Uphethiloli otholakala ngokulungisa kabusha nge-catalyst i-naphtha ekhishwe ngqo ene-octane ephansi phezu kwesivusamsebenzi seplatinamu ne-hydrogen: ama-naphthene nama-paraffin aba ama-aromatic nama-hydrocarbon anamagatsha alula, inombolo ye-octane iyakhuphuka. Isha kalula kakhulu.