TITLE: Improved Fischer-Tropsch Synthesis Catalysts for Indirect Coal Liquefaction: Quarterly Technical Progress Report No. 10 for the Period 1 January to 31 May 1988.

AUTHOR: G. T. Tong;   J. G. McCarty.

INST.  AUTHOR: SRI International, Menlo Park, CA.

SPONSOR: Department of Energy, Washington, DC.

LANGUAGE: English

PUB.  TYPE: Technical Report

PUB.  COUNTRY: United States

SOURCE: Department of Energy [DE],  1988,  15p.

NTIS ORDER NO.: DE89009582/INW

ABSTRACT:

The synthesis of aromatics was performed on several combinations of Fischer-Tropsch (FT) and sodium Y-zeolite catalysts in a fixed-bed reactor with an H2 /CO ratio of 0.5, 2.0-MPa pressure, and a temperature range of 548 to 700 K. Medium-level sulfur-treated fused iron and sulfur-treated alumina-supported ruthenium were used as the Fischer-Tropsch synthesis catalysts and compared with results using clean fused iron and clean ruthenium catalysts. The mixed catalysts initially provided high yields of light oxygenates and aromatics with low yields of olefins but deactivated rapidly, probably due to carbon deposition, especially at higher temperatures. The catalyst reactivity could be prolonged by using a higher zeolite/FT catalyst ratio and by using zeolites with higher sodium weight loading. These results compare favorably with prior similar studies performed under less severe coking conditions. 11 refs., 3 figs., 2 tabs. (ERA citation 14:021894)

REPORT  NUMBER: DOE/PC/80016-T8

CONTRACT  NUMBER: AC22-85PC80016