Investigation of sulfur-tolerant catalysts for selective synthesis of hydrocarbon liquids from coal-derived gases. Final technical progress report, September 19, 1979-October 22, 1984

Technical Report · Sat Oct 20 04:00:00 EDT 1984

OSTI ID:6360245

Bartholomew, C H

The effects of support and of boron or potassium promoters on the adsorption properties, CO hydrogenation activity/selectivity behavior, and sulfur resistance of iron (and to a lesser extent cobalt) were investigated. Iron catalysts supported on alumina, silica, and silicalite and promoted with potassium were prepared by conventional impregnation techniques. Cobalt and iron borides were prepared by chemical reduction with NaBH/sub 4/. The adsorptions of CO and H/sub 2/ on these catalysts were studied by static adsorption and temperature-programmed desorption techniques. Activity, selectivity, and sulfur-resistance during CO hydrogenation on these catalysts were determined using a laboratory microreactor. The results indicate that support, promoter, and catalyst pretreatment significantly influence adsorption, activity, selectivity, and sulfur resistance behavior of these catalysts. Hydrogen adsorption on these catalysts is highly activated; moreover the degree of activation varies with support, promoter and pretreatment. Specific activities of iron catalysts on different supports vary 40 fold; selectivities of these catalysts for CO/sub 2/ and different hydrocarbons also vary significantly with support. Calcination at 473/sup 0/K of potassium promoted Fe/silica shifts selectivity from conventional Fisher-Tropsch products (C/sub 1/-C/sub 10/ hydrocarbons and CO/sub 2/) to mainly methane, ethylene and propylene. These and other significant results are presented and discussed. An account of technical communications and publications is also included. 24 references, 20 tables, 9 figures.

• Research Organization: Brigham Young Univ., Provo, UT (USA)
• DOE Contract Number: AC22-79ET14809
• OSTI ID: 6360245
• Report Number(s): DOE/ET/14809-13; ON: DE85000648
• Country of Publication: United States
• Language: English

Related Subjects

090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
ALKALI METALS
BORIDES
BORON COMPOUNDS
CALCINATION
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTIONS
COAL GASIFICATION
COBALT BORIDES
COBALT COMPOUNDS
DECOMPOSITION
ELEMENTS
FISCHER-TROPSCH SYNTHESIS
FLUIDS
GASES
GASIFICATION
HYDROCARBONS
IRON
IRON BORIDES
IRON COMPOUNDS
METALS
ORGANIC COMPOUNDS
POTASSIUM
PYROLYSIS
SPECIFICITY
SYNTHESIS
SYNTHESIS GAS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS