Published September 2017

The study of chemical composition of used motor oil samples

S.B. Loghmanova

F.I. Samedova

A.F. Abbasova

R.Z .Hasanova

N.F. Gafarova

B.M. Aliyev

Y.H. Yusifov

The article presents the results of chemical composition study of used motor oil samples (IY) of Castrol GTX and Lukoil-super synthetic and semi-synthetic and after cleaning solvents with supercritical carbon dioxide (SC CO2). It is shown that used oils in their composition contain mostly isoparaffin structures and the share of aromatic hydrocarbons is very small, they are characterized by dark color, high acid number and coking. It was justified that IY after purification and optional purification with SC CO2 and hydrogen or an adsorbent may be directed for reuse as the base substrate.