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TITLE: Liquid Hydrocarbon Fuels from Syngas. Ninth Quarterly Report, March-May 1983. INST. AUTHOR: Union Carbide Corp., Tarrytown, NY. Tarrytown Technical Center. SPONSOR: Department of Energy, Washington, DC. LANGUAGE: English PUB. TYPE: Technical Report PUB. COUNTRY: United States SOURCE: Department of Energy [DE], 1983, 284p. ABSTRACT: The five iron catalysts reported were all promoted with potassium. The most promising results were obtained with the catalyst containing UCC-111 (Appendix B, Run 10225-3). In earlier studies UCC-111 alone had been found to be a poor Task 1 catalyst for oligomerizing propylene. Physically combined with potassium-promoted iron, however, it proved surprisingly effective as a syngas catalyst in Task 2. It produced straight-chain olefinic hydrocarbons, as a normal Fischer-Tropsch catalyst does, but unlike the normal Fischer-Tropsch catalyst, it may also have isomerized the carbon-carbon double bond. Transfer of the double bond from the usual Position 1, typical for Fischer-Tropsch products, to an interior position, should not only lower the pour point of the liquid product, but it should raise its octane number as well. Four of the six cobalt catalysts reported this quarter were promoted with either thorium or thorium and potassium. All six were synthesized by the precipitate-slurry method, with either LZ-105-6, LZ-Y-82, UCC-101 or UCC-107 as the Molecular Sieve component. The test results for most of these catalysts indicate that cobalt is more effective than iron in producing a high yield of motor fuels. This increase in motor fuel yield was due primarily to a higher yield of diesel oil, with the gasoline yield remaining approximately the same as for the iron catalysts. This increased diesel oil yield, as well as an increased methane yield, was balanced against a decreased C sub 2 -C sub 4 yield. The yields of the heavy fractions for both metal catalysts remained relatively low. (ERA citation 09:039811) REPORT NUMBER: DOE/PC/40077-T1 CONTRACT NUMBER: AC22-81PC40077 |