TITLE: Investigation of Sulfur-Tolerant Catalysts for Selective Synthesis of Hydrocarbon Liquids from Coal-Derived Gases. Annual Technical Progress Report, September 19, 1981-September 18, 1982.

AUTHOR: C. H. Bartholomew.

INST.  AUTHOR: Brigham Young Univ., Provo, UT.

SPONSOR: Department of Energy, Washington, DC.

LANGUAGE: English

PUB.  TYPE: Technical Report

PUB.  COUNTRY: United States

SOURCE: Department of Energy [DE],  6 Oct 82,  48p.

ABSTRACT:

During the third year the preparation of boride-promoted catalysts was improved, resulting in more active catalysts. Unsupported and 15% iron on silicalite catalysts were also prepared. Moessbauer spectra were obtained for several iron catalysts which showed that catalysts prepared from carbonyls yield higher metal dispersions. Activity/selectivity tests on iron and cobalt catalysts show that boride-promoted cobalt catalysts exhibit a high selectivity to C sub 5 to C sub 15 hydrocarbons.  Zeolite-supported iron catalysts show promise as producers of chemical feedstocks. In situ poisoning tests produced a linear loss of activity with increasing sulfur coverage. The addition of potassium or boron extends the life of Fe/SiO sub 2 catalysts; indeed an iron boride catalyst showed only 5% deactivation after five days. 20 figures, 6 tables. (ERA citation 08:011960)

REPORT  NUMBER: DOE/ET/14809-12

CONTRACT  NUMBER: AC22-79ET14809