TITLE: Technology development for cobalt F-T catalysts. Topical report No.3, Zirconia promotion of Fischer-Tropsch cobalt catalysts: Behavior in fixed-bed and slurry bubble column reactors.

AUTHOR: R. Oukaci;   G. Marcelin;   J. G. Goodwin.

INST.  AUTHOR: Energy International, Inc., Pittsburgh, PA.

SPONSOR: Department of Energy, Washington, DC.

LANGUAGE: English

PUB.  TYPE: Technical Report

PUB.  COUNTRY: United States

SOURCE: Department of Energy [DE],  17 Jan 95,  8p.

NTIS ORDER NO.: DE95009370INW

NOTES: American Chemical Society national meeting (209th), Anaheim, CA (United States), 2-7 Apr 1995. Sponsored by Department of Energy, Washington, DC.

ABSTRACT:

A series of cobalt-based F-T catalysts supported on alumina and silica were prepared with different loadings of Zr and different sequences of impregnation of Co and Zr. All catalysts were extensively characterized by different methods. The catalysts were evaluated in terms of their activity and selectivity both in fixed bed and slurry bubble column reactors.  Addition of ZrO(sub 2) to both Co/SiO(sub 2) and Co/Al(sub 2)O(sub 3) catalysts resulted in at least a twofold increase in the catalyst activity for F-T synthesis in the fixed bed reactor. In the slurry bubble column reactor, a similar promotion effect was observed for the SiO(sub 2)-supported catalysts, while the addition of Zr to a cobalt/alumina catalyst had a less significant effect.

REPORT  NUMBER: CONF-950402-6

CONTRACT  NUMBER: AC22-92PC92108