TITLE: Mechanism of Promotion of Iron Fischer-Tropsch Catalysts: Quarterly Report for Period Ending March 31, 1986.

INST.  AUTHOR: Louisville Univ. Research Foundation, Inc., KY.

SPONSOR: Department of Energy, Washington, DC.

LANGUAGE: English

PUB.  TYPE: Technical Report

PUB.  COUNTRY: United States

SOURCE: Department of Energy [DE],  1986,  43p.

NTIS ORDER NO.: DE89010832/INW

ABSTRACT:

The Fischer-Tropsch reaction is a complex combination of many reactions. Among those that have been demonstrated to occur on the catalyst surface are CO dissociation, build-up of carbon chains by a polymerization process, desorption of products such as olefins and oxygen-containing compounds, water formation and its subsequent shift reaction to form CO2, olefin hydrogenation, isomerization and reincorporation in the synthesis and, probably, other reactions yet to be identified and studied.  The tracer technique, involving the feeding of (14)C-labled compounds to the synthesis, is being used here in an effort to learn how catalyst additives and supports influence these reactions and determine the final product distribution. (14)C labeled ethanol, when added to a CO/H2 feed, undergoes dehydrogenation to establish essentially an equilibrium ethanol-acetaldehyde mixture. However, under the reaction conditions used, ethyl acetate and 1,1-diethoxyethane (actual) are significant products; the (14)C label permits use to identify these products as being derived from ethanol. In addition, it appears that aldol condensation of acetaldehyde occurs to a minor extent. 28 refs., 17 figs., 1 tab. (ERA citation 14:026410)

REPORT  NUMBER: DOE/PC/70029-T9

CONTRACT  NUMBER: AC22-84PC70029