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8712444 
Meetings & Symposia 
EFFECT OF TEMPERATURE PROGRAMMING ON THE LIQUEFACTION OF INDIANHEAD LIGNITE IN AN INORGANIC (H//2S-H//2O) SOLVENT SYSTEM 
Sweeny, PG; Gutenkunst, V; Martin-Schwan, ME; Stenberg, VI 
1987 
ACS 
Washington, DC, USA 
32 
637-642 
English 
High conversions can now be achieved using lower reactor temperatures and a temperature programming technique. Various temperature programs using times between 7. 5 and 60 minutes and temperatures from 300 degree to 480 degree C were used to liquefy Indianhead lignite. The inorganic solvent system H//2S-H//2O was used in conjunction with CO, H//2 and pyrrhotite as the liquefaction media. Programming the temperature produced higher THF soluble and cyclohexane soluble yields than the use of isothermal temperatures. The maximum overall conversions obtained to date using temperature programming were 94. 8% THF solubles, 83. 2% toluene solubles and 70. 5% cyclohexane solubles. THF-soluble conversions over 90%, were obtained at 350 degree C with temperature programming.