Study on three fractions of Feng Feng fat coal derived liquid by dept technique and 2DNMR

Three fractions of Feng Feng fat coal derived liquid were investigated by DEPT technique and 2D C-H correlation spectroscopy. Some structural information were obtained, F11 fraction was separated out by n - heptane solvent, which mainly included straight and branched alkane with different chain length, and cycloalkanes. Aromatic hydrocarbons were the main constituents of F12, which was eluted using benzene solvent. F14 fraction was separated out using THF, therefore it contained more polar compounds, which consisted of heterocyclic compound and all kinds of substitued cyclic hydrocarbons.