Effectiveness of methyl tert-butyl ether and ethynylcyclohexanol on increasing the octane number of gasoline compositions of straightrun gasoline + reforming

Abstract

One of the ways to expand the production of high-octane unleaded gasoline is the use of oxygen-containing components (oxygenates). The addition of oxygenates increases the detonation resistance, especially of light fractions, the completeness of gasoline combustion, reduces fuel consumption and reduces the toxicity of exhaust gases. It was found that such an amount of oxygenates, despite their lower calorific value compared to gasoline, does not adversely affect the energy performance of engines. Oxygen-containing additives are complex and simple esters of monocarboxylic acids, higher alcohols, oxidized hydrocarbon fractions containing mixtures of acids, alcohols and esters, and oxyethylated compounds. Because of its high octane number, which allows the compression ratio to be increased to 16, methanol is used to fuel racing motorcycles and cars.The effect of ethynylcyclohexanol (ECH) and methyl tret-butyl ether (MTBE) on increasing the octane number of gasoline compositions has been evaluated by increasing the octane number of a 50:50 and 20:80 mixture of straight-run gasoline and reforming gasoline. It has been shown that ECH is an effective oxygen-containing additive (oxygenate) for increasing the octane number of gasoline compositions, compared with MTBE.