Catalysts and process developments for two-stage liquefaction. Quarterly technical progress report, Third quarter FY 1990 (April 1--June 30, 1990)
Technical Report
·
OSTI ID:10188213
Research underway in this project centers upon developing and evaluating catalysts and process improvements for coal liquefaction in the two-stage close-coupled catalytic process. A fresh sample of Black Thunder subbituminous coal was liquefied in a two-stage batch-scale continuous unit with presulfided AMOCAT{trademark}-1C in both reactors. The product contained no resid and over half of the liquid distilled below 650 F. In the second stage catalyst program, an attempt is being made to diversify the catalyst development effort by testing previously unevaluated materials. The performances of moderate surface area molybdenum nitride and molybdenum carbide were compared against AMOCAT{trademark}-1B, Shell 324 and thermal treating for hydroprocessing of a coal-derived gas oil and resid. The gas oil and resid product qualities from the carbide and nitride materials were significantly better than the thermally treated liquids, indicating that these catalysts were indeed active under practical hydrotreating conditions. A method of calculating pseudo-first-order rate constants based on active sites was used and the results indicated that both the molybdenum carbide and nitride are significantly more active than Shell 324 and AMOCAT{trademark}-1B. Based on the promising initial results, however, additional high-surface-area nitrides and carbides will be prepared at Clarkson University and compared on a constant volume basis against conventional hydrotreating catalysts.
- Research Organization:
- Amoco Oil Co., Naperville, IL (United States). Research and Development Dept.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC22-88PC88819
- OSTI ID:
- 10188213
- Report Number(s):
- DOE/PC/88819--T2; ON: DE95001211; BR: AA2515150
- Country of Publication:
- United States
- Language:
- English
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