Method for preparing a promoted iron catalyst and catalyst prepared by the method for conversion of synthesis gas to liquid hydrocarbons

Patent · Tue Feb 19 04:00:00 EST 1991

OSTI ID:5789414

Bell, W K; Haag, W O

This patent describes improvement in a method for preparing a catalytically active Fischer Tropach promoted iron catalyst. It comprises: activating an inactive catalyst precursor comprising an iron oxide and a promoting amount of potassium. The iron oxide is selected from the group consisting of precipitated iron oxide, fused magnetite, and iron oxide impregnated on a carrier. The activation being effected by contact of the inactive catalyst precursor with gaseous hydrogen, carbon monoxide, or a mixture thereof at elevated temperature. The improvement comprises contacting the catalyst precursor with water vapor during or after the activation step. The contacting with water vapor is conducted under a combination of conditions including a temperature of about 160{degrees} C. to about 350{degrees} C., a water vapor partial pressure of about 1 (one) to 500 psig, and for about 0.5 to 100 hours. The combination is effective to increase the selectivity of the activated catalyst for forming liquid hydrocarbons whereby forming selectivated activated catalyst.

• Assignee: Mobil Oil Corp., New York, NY (USA)
• Patent Number(s): US 4994428; A
• Application Number: PPN: US 7-324796
• OSTI ID: 5789414
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ACTIVATION ENERGY
CATALYSIS
CATALYSTS
CHALCOGENIDES
CHEMICAL REACTIONS
ENERGY
FISCHER-TROPSCH SYNTHESIS
FLUIDS
GASES
HYDROCARBONS
IRON COMPOUNDS
IRON OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PRODUCTION
SYNTHESIS
SYNTHESIS GAS
TRANSITION ELEMENT COMPOUNDS