1. Department of Physical Chemistry, V. N. Karazin Kharkiv National University, Svoboda Square 4, Kharkiv 61022, Ukraine
2. School of Infrastructure and Sustainable Engineering Department of Chemical Engineering and Applied Chemistry, Energy and Bioproducts Research Institute, Aston University, Birmingham B4 7ET, U.K.
3. Department of Mathematics, Aston University, Birmingham B4 7ET, U.K.