Preliminary Analysis of Liupanshui Region Laoyingshan Gas Coal Macromolecular Structure

The study of coal macromolecular structure is the basis for the conversion of coal into a highly efficient value-added product. This paper takes Liupanshui region Laoyingshan gas coal as the research object, after de-ashing pretreatment, FTIR and C-13 NMR analysis, with peakfit software to manipulate the peak points for NMR spectra. Obtained the structure information of carbon atoms in the coal and the structure parameters, the results showed that, Laoyingshan gas coal hydrogen carbon ratio is 0.818, branched chain length is 0.597, aromatic hydrogen rate is 0.553, aromatic carbon rate is 0.581, carboxyl carbon rate is 0.067, phenol or aryl ether carbon rate is 0.035, replace the aromatic carbon rate is 0.058, aliphatic carbon rate is 0.419, quaternary carbon or tertiary carbon or secondary carbon rate is 0.123, oxygen connection aliphatic carbon rate is 0.099, aliphatic methyl or aromatic methyl rate is 0.185. At last, by structural parameters of speculation obtain the molecular formula for Laoyingshan gas coal is C208H170N2O17S, the molecular weight is 2998.