88.水素結合性相互作用を考慮に入れた褐炭の極性溶媒中における膨潤のモデル化

概要

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A brown coal was swollen in binary solvents, such as pyridine-benzene or dimethylsulfoxide (DMSO)-benzene mixtures at 303K. The fully deuterated solvents were used to investigate the mobility of the coal hydrogen by pulsed ^1H NMR technique. The volumetric swelling ratio (Q) and the amount of mobile hydrogen were measured as a function of the composition of the solvent. The fractional amounts of the mobile hydroxyls, f_<M(OH)>, was also determined by using the reference brown coal samples whose hydroxyls groups were selectively deuterated. The relationship between f_<M(OH)> and the volume faction of the swollen coal gel, φ_B(=1/Q) was established and analyzed by association models. The model predicts reasonably the effect of solvent types on the observed f_<M(OH)> vs φ_B relationships.
一般社団法人日本エネルギー学会の論文
1999-10-28