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A Catalyst For Synthesis Gas Conversion To Hydrocarbons And A Method To Produce Hydrocarbons

Patent Number: RU2017517

Inventor(s): Riis Trygve (NO); Eri Sigrid (NO); Marcelin George (US); Goodwin James G Jr (US)

Applicant(s): Norske Stats Oljeselskap (NO)

Requested Patent: RU2017517

Application Number: RU19884356964 19883011

Priority Number(s): RU19884356964 19883011

IPC Classification: C07C1/04

EC Classification: B01J23/889H, C07C1/04D2B

Equivalents: AU2544688, BR8807760, CA1329190, CN1020678B, CN1033755, DE3882886D, DE3882886T, DK172976B, DK586488, FI92911B, FI92911C, JP3502067T, LT1530, NO178958B, NO178958C, NO884684, US4801573, WO8903725

Application of 24.10.1988

Priority of ---

Published: 15.08.1994

Abstract

A catalyst and process for converting synthesis gas composed of hydrogen and carbon monoxide to hydrocarbons. The catalyst includes cobalt in catalytically active amounts up to about 60 wt% of the catalyst and rhenium in catalystically active amounts of about 0.5 to 50 wt% of the cobalt content of the catalyst supported on alumina. A metal oxide promoter may be added. A preferred process includes the step of contact the synthesis gas feed with the catalyst at reaction conditions.

A catalyst is suggested for the conversion of synthesis gas to hydrocarbons, that contains cobalt and a promoter supported on alumina. In order to improve the catalyst activity and selectivity towards higher hydrocarbons rhenium is added as the promoter. The catalyst composition is as follows (wt.%):

Cobalt 3-60
Rhenium 0.03-18.00
Alumina the rest

The rhenium content in the catalyst amounts to 1-30% of the cobalt content.

The catalyst contains also an alkali metal oxide in the amount of 0.5-50% (by the alkali metal) of the cobalt content.

Hydrocarbons are produced by passing a gas mixture containing hydrogen and carbon monoxide over the said catalyst at 190-280C and 1-40 atmospheres. Synthesis gas space velocity is equal to 100-1000 cm3/gcat-hr, hydrogen to carbon monoxide molar ratio is (1-2.5):1. A catalyst is also applied doped with 0.1-5.0 wt.% of a metal oxide selected from a group of zirconium oxide and rare earth metal oxides. The synthesis is carried out also at hydrogen to carbon monoxide molar ratio of (1.5-2.5):1. The process is run in a slurry reactor.