Improved catalysts for coal liquefaction: Quarterly report No. 11 for the period March 1, 1987 to May 31, 1987

Technical Report · Fri Jun 26 04:00:00 EDT 1987

OSTI ID:6484786

Haynes, Jr, H W; McCormick, R L

Two deactivation runs were completed during the last quarter. The performance of a commercial NiMo/alumina catalyst (AMOCAT 1C) was roughly equivalent to that of its CoMo/alumina analog (AMOCAT 1A). This suggests that high temperatures alone (825/sup 0/F) cannot explain the relatively poor performance of NiMo as compared to CoMo that has been reported in previous coal liquefaction studies. A CoMo/nitrided active carbon performed better than any of the carbon supported catalysts thus far studied, but performance fell short ofthe benchmark catalysts, AMOCAT 1A. The workup of a deactivation run with a CoMo/titania catalysts is now complete and results are reported. Two correlations of performance with catalyst properties are now beginning to emerge. A correlation of activity with micropore volume in the range 60 to 200 A pore diameter has been established. A similar correlation was reported earlier by Amoco researchers. We have also observed a negative correlation of carbon deposition with increase in acidity as determined by TPD of an organic base. This appears to contradict earlier findings in which a reduction of acidity by sodium impregnation resulted in less carbon on catalyst. 7 refs., 8 figs., 9 tabs.

• Research Organization: Wyoming Univ., Laramie (USA). Dept. of Chemical Engineering
• DOE Contract Number: FG22-84PC70812
• OSTI ID: 6484786
• Report Number(s): DOE/PC/70812-11; ON: DE87011263
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
CARBONIZATION
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTIONS
COAL LIQUEFACTION
COAL LIQUIDS
COBALT
COKING
COMPARATIVE EVALUATIONS
CORRELATIONS
DEACTIVATION
DECOMPOSITION
ELEMENTS
FLUIDS
HYDROGENATION
LIQUEFACTION
LIQUIDS
METALS
MOLYBDENUM
NICKEL
PERFORMANCE
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS
YIELDS