TITLE: Micelle-derived catalysts for extended Schulz-Flory. Technical progress report, July 1, 1986--September 30, 1986.

AUTHOR: H. Abrevaya.

INST.  AUTHOR: Signal Research Center, Inc., Des Plaines, IL.

SPONSOR: Department of Energy, Washington, DC.

LANGUAGE: English

PUB.  TYPE: Technical Report

PUB.  COUNTRY: United States

SOURCE: Department of Energy [DE],  1986,  3p.

NTIS ORDER NO.: DE93003298INW

ABSTRACT:

The objective of this program is to develop a synthesis gas conversion catalyst with higher selectivity to liquid fuels, while maintaining catalytic activity and stability at least equivalent relative to state-of-the-art precipitated iron catalysts. During this quarter, the emphasis in the program has been the investigation of the hydrocarbon cutoff hypothesis with supported ruthenium catalysts. An alumina-supported catalyst with smaller than 20(Angstrom) ruthenium particles was tested under conditions of maximal water gas shift activity. During this test more than 90% of the water made in the Fischer-Tropsch synthesis reaction was converted to H(sub 2). However, the extent of ruthenium metal agglomeration was not reduced. Accordingly, it was not possible to conclude whether hydrocarbon cutoff occurs with smaller than 20(Angstrom) ruthenium particles on (gamma)-alumina. A ruthenium catalyst prepared on Y-type zeolite had 20(Angstrom) or smaller ruthenium particles according  to STEM examination and a 15(Angstrom) average ruthenium metal particle size according to EXAFS examination. The ruthenium metal particle size was stable during the test with this catalyst. The hydrocarbon product distribution was Anderson-Schulz-Flory with no cutoff up to a carbon number of 160. A well-dispersed titania-supported ruthenium catalyst is going to be evaluated during the next quarter in order to determine whether hydrocarbon cutoff occurs.

REPORT  NUMBER: DOE/PC/70023-T9

CONTRACT  NUMBER: AC22-84PC70023