抄録
NMR imaging method is very useful for inhomogeneous materials. However the highly technique and the difficulty of experimental setup are needed in the case of coals without solvent swelling method. And the influence of various magnetic susceptibilities in coals are set your mind on NMR imaging. Therefore, we have applied Single-Point-Imaging. It was obvious that the image of coal was clear significantly as compared with past works because of the effect of Single-Point-Imaging. It was found that the distribution of mobile component was very heterogeneous like the distribution of macerals. Additionally, NMR imaging method is very powerful and useful for studying of chemical interaction between coals and solvents.
