TITLE: Investigation of Sulfur-Tolerant Catalysts for Selective Synthesis of Hydrocarbon Liquids from Coal-Derived Gases. Quarterly Technical Progress Report, March 19-June 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],  1 Jul 82,  28p.

ABSTRACT:

More active supported boride-promoted catalysts were prepared by heating less rapidly during reduction. Unsupported iron and 15% iron on silicalite catalysts were also prepared. Thermogravimetric analysis of prepared samples was also begun. Two silica supported catalysts derived from Fe(CO) sub 5 were tested. Both catalysts lost over half their initial activity within five hours, but both steady state activity and product selectivities are comparable with other iron catalysts. A silica-supported, boron-promoted cobalt catalyst was tested and exhibited a selectivity of 72% to C sub 5 -C sub 15 hydrocarbons at temperatures above 485 exp 0 K. Data analysis was completed on in-situ poisoning tests.  Exposure to 2 ppM H sub 2 S resulted in much more rapid deactivation than exposure to 4 to 8 ppM H sub 2 S. Deactivation at 525 exp 0 K caused an increase in the C sub 2 olefin/paraffin ratio. (ERA citation 08:001854)

REPORT  NUMBER: DOE/ET/14809-11

CONTRACT  NUMBER: AC22-79ET14809