Investigation of the Composition and Structure of High-Boiling Fraction of Heavy Pyrolysis Resin of the Broad Fraction of Light Hydrocarbons
Analysis of the heavy pyrolysis resin from Tomskneftekhim LC and the products of its extraction-chromatographic separation (oil, resin and pyrobitumen) was carried out by means of pyrolysis gas chromatography – mass spectrometry (PGCMS). The major structural fragments of resins and pyrobitumen were determined, as well as the individual composition of oil species during decomposition in the pyrolysis chamber at 800 °C in the inert atmosphere. It was established that oil species are a mixture of low-molecular condensed aromatic compounds – 3–6-nuclear aromatic hydrocarbons with the molecular mass up to 300 a.m.u., while resin and pyrobitumen species are high-molecular aromatic compounds with the molecules composed of 1–2-, 4–5- and 1–2-, 3–4-nuclear aromatic fragments, respectively. The composition of the high-boiling part of the heavy pyrolysis resin was identified using PGCMS and IR spectroscopy.