TITLE: Sulfur Poisoning of Catalysts. Quarterly Progress Report, 1 January--31 March 1977.

INST.  AUTHOR: Stanford Research Inst., Menlo Park, CA.

SPONSOR: Department of Energy, Washington, DC.

LANGUAGE: English

PUB.  TYPE: Technical Report

PUB.  COUNTRY: United States

SOURCE: Department of Energy [DE],  1 May 77,  37p.

ABSTRACT:

A study is being made of the deactivation of catalysts used to produce fuels from the reaction of carbon monoxide and hydrogen. During this reporting period, the magnetic properties of iron-based Fischer-Tropsch catalysts during carburization at elevated pressures were examined; a study was made by Auger electron spectroscopy of the change in distribution of potassium promoter on a Fischer-Tropsch catalyst during carburization; and a measurement was made of the chemical reactivity toward hydrogen of surface carbon deposits formed on an alumina-supported ruthenium catalyst. Also, the kinetics of surface migration of sulfur species on copper were determined and a kinetic model of surface carbon deposition and bulk carbon incorporation in Fischer-Tropsch catalysts as encountered typically during catalyst pretreatment and carburization was developed. A detailed technical report is being prepared on this work.  Finally, calculation has been started on the gas phase compositions in equilibrium with iron carbides (Fe sub 2 C and Fe sub 3 C) and iron oxide (Fe sub 3 O sub 4 ) for the carbon-hydrogen-oxygen system over a temperature range from 500 to 800 exp 0 K. (ERA citation 02:057886)

CONTRACT  NUMBER: EY-76-C-02-0060