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- W24763990 abstract "The Fischer-Tropsch Synthesis (FTS) is the reaction of carbon monoxide and hydrogen to form linear paraffins, primary alcohols and primary and secondary olefins. Olefins comprise about half of the C/sub 2/ to C/sub 10/ species and are insignificant larger than C/sub 11/. Enhanced olefin selectivity in FTS may be desirable for several reasons. For C/sub 2/ and C/sub 3/, increasing olefin selectivity will increase the ability to upgrade this fraction to liquid fuels through polymerization to C/sub 6/ through C/sub 9/ species. For C/sub 4/, C/sub 5/ and C/sub 6/, enhancing olefin formation will produce a suitable feedstock for alkylation to produce a high octane fuel. Thirdly, the olefins in the FTS product is an excellent source of olefins for the chemical industry. An added benefit from increasing olefin selectivity, will be a lower hydrogenation activity of the FTS catalyst which could result in lower methane formation. One method for increasing olefin selectivity is the addition of sulfur compounds to a potassium-promoted iron catalyst. The H/sub 2/S poisoning differed from the DBT poisoning in that H/sub 2/S was added to the catalyst after the catalyst had been exposed to synthesis gas for several days, while DBT was added after reductionmore » but before the catalyst was exposed to synthesis gas. The question to be answered by this work is whether the order of addition of the poison or the chemical state of the poison causes the differences in selectivity.« less" @default.
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- W24763990 date "1986-03-01" @default.
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- W24763990 title "Enhanced Fischer-Tropsch selectivity through sulfur poisoning" @default.
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