LIQUEFACTION OF BEYPAZARI LIGNITE USING NiCl2-KCl-LiCl CATALYSTS. 2. HYDROGEN TRANSFER FROM TETRALIN TO COAL

The effect of temperature and NiCl2-KCl-LiCl (14:36:50 molar percentages) catalyst on tetralin7sol;naphthalene ratio in the absence and presence of Beypaian lignite was determined. The amounts or tctralin and naphthalene present in the liquid products were determined by gas chromatography. The tetralin/naphthalene ratio decreased from 49 to 47 and 31 in noncatalytical experiments performed in the absence of lignite at 270°C 300°C and 360°C, The lowest tetralin/naphthalene ratio was observed at 360/C and this indicated that the highest amount of hydrogen radicals was supplied by tetralin at this temperature. Therefore it was reasonable to assume that the highest conversion to liquid products might have occurred at this temperature. While the amount of catalyst added was increased from 0.00 to 0.50 the tetralin/naphthalene ratio decreased to its minimum values for all the experiments done at 275°C, 300°C and 360°C. In experiments with coal the tetralin/naphthalene ratio was about 5 times smaller than the value of the ratio in experiments without coal. This indicated that, in the presence of coal, the tetralin→ naphthalene reaction was strongly forced to proceed in the direction of the arrow.