5-7.低温での石炭水素移動反応のメカニズム(Session(5)重質炭素資源の転換反応における水素移動)

抄録

Retrogressive reaction of the solubles, i.e., its conversion to solvent insolubles, was found to occur in tetralin or naphthalene at temperatures as low as 100℃,175℃ and 250℃. While, the retrogressive reaction was suppressed by adding 9, 10-dihydroanthracene or 1, 4, 5, 8, 9, 10-hexahydro-anthracene, which are much stronger donors than tetralin or naphthalene. Moreover, by these treatment in stronger donors, the lighter fraction was formed. It is noted that the quantity of hydrogen transferred from the hydrogen donor solvents was well correlated with the extent of dissolution reaction by the heat treatment, suggesting that the hydrogen abstraction of coal radicals from the solvents occurs even at such low temperatures. The origin of the coal radicals and the mechanism of hydrogen transfer between coal and solvent at low temperature are discussed.