Elucidation of mechanism of coal liquefaction using tritium and ~35S tracer methods

摘要

The reactivity of hydrogen in tetralin and in Taiheiyo coal in the presence of iron catalysts (pyrrhotite and iron pentacarbonyl (Fe(CO)_5) and sulfur were investigated using tritium and ~35S tracer methods under liquefaction conditions. Coal liquefaction was performed for 30 min at an initial pressure of 5.9 Mpa and a temperature of 400 deg.C in the presence f tetralin solvent and tritiated hydrogen, with a without a catalyst and ~35S-labeled sulfur. The rate of coal conversion and the tritium distribution in coal were higher when Fe(CO)_5 ad sulfur were used than were obtained with conventional pyrrhotite.