SPECIFIC CARBON DIOXIDE EMISSIONS OF INDIVIDUAL HYDROCARBONS IN MOTOR FUELS

The increase in greenhouse gases in the atmosphere is considered to be one of the global problems of our time, as this phenomenon leads to an increase in ambient temperature. The international community tries to take various measures to reduce greenhouse gas emissions. Within the framework of the UN Framework Convention on Climate Change, the Paris Agreement was adopted in 2015, aimed at reducing greenhouse gas emissions and limiting global temperature increases. In 2016 Russia joined the Paris Agreement on Climate and committed to reduce greenhouse gas emissions by 25–30 % since 1990 levels by 2030. Transport is and will remain one of the main emitters of carbon dioxide emissions in the medium term. CO2 emissions from the combustion of any fuel depend primarily on its chemical composition. The composition of modern motor fuels includes paraffin, naphthenic, olefin and aromatic hydrocarbons, and sometimes oxygen-containing compounds are introduced into their composition. The article presents for the first time the results of studies of specific CO2 emissions of various classes of hydrocarbons included in motor fuels, depending on the number of carbon atoms in the molecule. It is shown that the specific CO2 emissions of hydrocarbons included in the composition of motor fuels differ greatly both in group composition and within groups themselves. Specific CO2 emissions of such high-octane components of automobile gasoline as butanes and toluene, for example, differ by 10.6 %, and in terms of unit of energy released – by more than 24 %.