TITLE: Lanthanum cobalt oxides as models for La-promoted Co/(gamma)-Al(sub 2)O(sub 3) catalys.

AUTHOR: O. H. Hansteen.

INST.  AUTHOR: Oslo Univ. (Norway).

LANGUAGE: English

PUB.  TYPE: Thesis

PUB.  COUNTRY: United States

SOURCE: Department of Energy [DEE],  31 Dec 1998,  112p.

NTIS ORDER NO.: DE99751210INW

ABSTRACT:

Cobalt supported on (gamma)-Al(sub 2)O(sub 3) have for a long time been interesting catalysts for the synthesis of hydrocarbons by hydrogenation of carbonmonoxide, the so-called Fischer-Tropsch synthesis. The reduction and catalytic properties of these catalysts are largely improved by addition of promotors like rhenium and lanthanum. This thesis attempts to provide additional knowledge to the nature of the reduction processes from metal oxides via partially reduced phases into metal and to the large degree of interaction/reaction between the catalyst components. It focuses on detailed studies of model oxides in the La-Co-O and Co-Al-O systems under reducing conditions typically used for the synthesis of the catalysts. 132 refs., 41 figs., 16 tabs.

REPORT  NUMBER: NEI-NO-1072