1. Department of Chemical Technology of Petroleum and Gas Processing, KNRTU, Kazan, Russia;
2. Laboratory of Chemistry and Geochemistry of oil, A.E. Arbuzov Institute of Organic and Physical Chemistry Subdivision of the Federal State Budgetary Institution of Science “Kazan Scientific Center of Russian Academy of Sciences”, Kazan, Russia;
3. Department of Physical Chemistry, KFU, Kazan, Russia