63.石炭有機質に結合した鉱物成分のキャラクタリゼーション(石炭利用における科学と工学の融合)

抄録

Mineral components bonded to organic parts in coals are characterized by solid-state NMR, XRF, and ICP analyses, in order to elucidate their behaviors during heating, solvent extraction, and acid treatments. Major inorganic components in coals are mineral and clay matters, however, some portions of metals bonded to organic parts in coals through oxygen functional groups are contained, especially in lower ranked coals. It is of value to point out that some aluminosilicates are organically bonded and extracted by mild acid treatment at room temperature and solvent extraction at high temperatures around 350℃. It is revealed that such aluminosilicates as well as ion-exchangeable cations such as alkali and alkali-earth metals may influence the deposition problems by their intimate interactions with organic hydrocarbons through oxygen functional groups in coal during heating, solvent extraction, pyrolysis, and liquefaction.