Abstract
Desulfurization behavior of five coals with different carbon content was investigated by immersing coals into hydrogen peroxide. Most of pyritic and sulfate sulfurs could be removed from all of coals by the treatment. The removal extent of organic sulfur decreased with the increase of carbon content of coals. Thiol is oxidized to sulfone and sulfoxide by the treatment, showing the high removal extent of organic sulfur of the coals with high thiol content. Low removal extent of organic sulfur was observed for the coals with high content of thiophene. With the increase of the carbon aromaticity, the removal extent of organic sulfur decreased.
