1. Department of Physical Chemistry of Fossil Fuels InPOCCNational Academy of Sciences of Ukraine Lviv Ukraine
2. Vasyl’ Stus Donetsk National University Vinnytsia Ukraine
3. L. M.Litvinenko Institute of Physical Organic and Coal ChemistryNational Academy of Sciences of Ukraine Kyiv Ukraine
4. National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute” Kyiv Ukraine