Coal hydrogenation using iron and iodine as catalyst.

概要

論文の詳細を見る
Taiheiyo coal has been hydrogenated using iron and iodine as catalyst The effect of quantity of iron and iodine, the reaction temperature and reaction time were examined. Catalyst acted very effectively on liquefaction, but the excessive iodine accelerated the condensation reaction decreasing the conversion. Pretty large amount of iodine was trapped in preasphaltene and pyridine insoluble fraction. It is not yet clear how iodine acted on liquefaction or polymerization of coal, however one possible mechanism is as follows. Substitution of iodine affords iodated coal molecules, which produce hydroiodic acid by reacting with molecular hydrogen. Hydroiodic acid thus formed reacts with iron, producing hydrogen radicals which stabilize coal fragment radicals. Condensation reaction takes place between aromatic iodides and other aromatic molecules evolving hydroiodic acid.
一般社団法人日本エネルギー学会の論文