Pong Kau Yuen

Document Type


Date of Award



College of Science, Engineering, and Technology (COSET)

Degree Name

MS in Chemistry

First Advisor

Bobby L. Wilson

Second Advisor

G.T. Stubblefield

Third Advisor

John B. Sapp


The direct coal liquefaction of Illinois Number Six River King coal using bis(dihydrobis(l-pyrazolyl)borate)nickel (II) as a catalyst in SRC II (a distillate at 240-450°C) was evaluated at times of 15 minutes. Each run was carried out in a 300 ml magnedrive autoclave reactor under an initial hydrogen pressure of 900-1200 psig and/or at 425-475°C. In case of different hydrogen pressures, the tetrahydrofuran (THF) and cyclohexane conversions increased with increased hydrogen pressure. At the two temperatures of 425°C and 475°C the cyclohexane conversion increased with the increased temperature but the THF conversion decreased. The effects of different solvents and heating-rate of short residence times would require for further study.

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Chemistry Commons