TITLE: Improved Catalysts for Liquid Hydrocarbon Fuels from Syngas. Sixth Quarterly Technical Progress Report, January-March 1986.

INST.  AUTHOR: Union Carbide Corp., Tarrytown, NY. Molecular Sieve Dept.

SPONSOR: Department of Energy, Washington, DC.

LANGUAGE: English

PUB.  TYPE: Technical Report

PUB.  COUNTRY: United States

SOURCE: Department of Energy [DE],  1986,  247p.

NTIS ORDER NO.: DE86014659/INW

ABSTRACT:

The catalyst testing for this quarter was focused on further understanding and developing the X sub 11 promoted cobalt oxide component intimately contacted with the Molecular Sieve TC-123. Furthermore, the addition of new promoters, the addition of a water gas shift component, and the substitution of TC-123 with a new Molecular Sieve TC-121 and with gamma -alumina was also studied. The use of the additional promoter X sub 13 was found to increase the water gas shift activity of the X sub 11 promoted Co/TC-123 catalyst. While the catalyst demonstrated excellent stability at 240C, it did, however, show considerable deactivation at 260C. The use of the additive X sub 9 , geared towards improving the Co/S sub 11 /TC-123 catalyst's stability at higher temperatures, appeared partially successful. The catalyst demonstrated high activity (about 75 percent CO + H sub 2 conversion at 260C, 500 psig, and a 1.5:1 H sub 2 :CO) with a deactivation rate of only about one percentage point every 150 hours. The selectivity, however, remained excellent with about 9 percent CH sub 4 being produced throughout the 800 hour test period. Attempts to improve the water gas shift activity of the system by the simple addition of a separate water gas shift catalyst (K/Ni/Mo- gamma -alumina) were unsuccessful. Similarly, the testing of the new Molecular Sieve TC-121 demonstrated inferior performance in both activity and selectivity when compared with the analogous TC-123 supported catalyst. The preliminary test results for these catalysts are summarized in Appendix A. (ERA citation 11:047363)

REPORT  NUMBER: DOE/PC/70028-T7

CONTRACT  NUMBER: AC22-84PC70028