Strong promoting effect of H{sub 2}O on coal liquefaction using water-soluble and oil-soluble Mo catalyst precursors
- Pennsylvania State Univ., University Park, PA (United States)
This paper reports on the unusual, and strong promoting effect of water on low-severity catalytic liquefaction of Wyodak subbituminous coal. For coal liquefaction using dispersed hydrogenation catalyst, removal of moisture or water by drying before reaction has been a common practice. In our recent work on drying effects, it was found that the primary drying effect on coal conversion at 350{degrees}C was due to water removal, rather than physicochemical changes within coal structure caused by drying. Prompted by this observation, we examined the effect of water on catalytic runs and found that water can have very strong promoting effect on catalytic coal liquefaction with a dispersed Mo sulfide catalyst at 350{degrees}C. In the present study, we examined the water effect using dispersed Mo catalysts generated in situ from different precursors. The findings described in this paper may offer new opportunities for developing low-severity catalytic processes for coal liquefaction.
- DOE Contract Number:
- AC22-91PC91042
- OSTI ID:
- 200458
- Report Number(s):
- CONF-950963--Vol.2
- Country of Publication:
- Netherlands
- Language:
- English
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