Catalytic coal liquefaction. Final report
Monolith catalysts of MoO/sub 3/-CoO-Al/sub 2/O/sub 3/ were prepared and tested for coal liquefaction in a stirred autoclave. In general, the monolith catalysts were not as good as particulate catalysts prepared on Corning alumina supports. Measurement of O/sub 2/ chemisorption and BET surface area has been made on a series of Co/Mo/Al/sub 2/O/sub 3/ catalysts obtained from PETC. The catalysts were derived from Cyanamid 1442A and had been tested for coal liquefaction in batch autoclaves and continuous flow units. MoO/sub 3/-Al/sub 2/O/sub 3/ catalysts over the loading range 3.9 to 14.9 wt % MoO/sub 3/ have been studied with respect to BET surface (before and after reduction), O/sub 2/ chemisorption at -78/sup 0/C, redox behavior at 500/sup 0/C, and activity for cyclohexane dehydrogenation at 500/sup 0/C. In connection with the fate of tin catalysts during coal liquefaction, calculations have been made of the relative thermodynamic stability of SnCl/sub 2/, Sn, SnO/sub 2/, and SnS in the presence of H/sub 2/, HCl, H/sub 2/S and H/sub 2/O. Ferrous sulfate dispersed in methylnaphthalene has been shown to be reduced to ferrous sulfide under typical coal hydroliquefaction conditions (1 hour, 450/sup 0/C, 1000 psi initial p/sub H/sub 2//). This suggests that ferrous sulfide may be the common catalytic ingredient when either (a) ferrous sulfate impregnated on powdered coal, or (b) finely divided iron pyrite is used as the catalyst. Old research on impregnated ferrous sulfate, impregnated ferrous halides, and pyrite is consistent with this assumption. Eight Co/Mo/Al/sub 2/O/sub 3/ catalysts from commercial suppliers, along with SnCl/sub 2/, have been studied for the hydrotreating of 1-methylnaphthalene (1-MN) in a stirred autoclave at 450 and 500/sup 0/C.
- Research Organization:
- State Univ. of New York, Buffalo (USA). Dept. of Chemical Engineering
- DOE Contract Number:
- AC22-76ET10518
- OSTI ID:
- 6754273
- Report Number(s):
- DOE/ET/10518-T4; ON: DE83001098
- Country of Publication:
- United States
- Language:
- English
Similar Records
Catalytic coal liquefaction. Quarterly report, July-September 1980
Catalytic coal liquefaction. Quarterly report, April-June 1981
Related Subjects
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL PREPARATION
COAL LIQUEFACTION
IRON COMPOUNDS
IRON SULFIDES
LIQUEFACTION
MOLYBDENUM COMPOUNDS
MOLYBDENUM OXIDES
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
SULFIDES
SULFUR COMPOUNDS
SYNTHESIS
TESTING
THERMOCHEMICAL PROCESSES
TIN COMPOUNDS
TRANSITION ELEMENT COMPOUNDS