Influences of the Introduced O-Containing Functional Groups on the Gaseous Pyrolysis Product of Superfine Pulverized Coal

An O-containing structure in coal can affect the pyrolysis process; however, influence of introduced functional groups has rarely been investigated. To study this issue, two kinds representative were selected for superfine pulverization and chemical oxidation. The 13C-NMR FTIR experiments demonstrated that groups, such as carboxyl, could be added into carbon skeleton after 5 wt% peracetic acid modification. It was found 1 hydrogen peroxide solutions had no ability, but solution expand pore increase specific surface area. Thermogravimetric air showed oxidation weight loss rate below 400 °C reduce ignition temperatures. Pyrolysis tube furnace proved amount CO released increased commencing temperature decreased by 50 modification acid. generation paths C2H4 C6H6 changed; new peaks appeared near 200 °C. strongly confirmed obvious synergistic effects on introduction especially anthracite samples.