Loading patent…
AssigneeConoco Inc.
InventorsLeo E. Manzer, Kostantinos Kourtakis
Estimating the term…
A process is disclosed for producing hydrocarbons by contacting a feed stream comprising hydrogen and carbon monoxide with a catalyst in a reaction zone maintained at conversion-promoting conditions effective to produce an effluent stream comprising hydrocarbons. The process is characterized by using a catalyst prepared by a method involving (1) forming a catalyst gel by destabilizing an aqueous colloid comprising (a) at least one catalytic metal for Fischer-Tropsch reactions (e.g., iron, cobalt, nickel and/or ruthenium), (b) colloidal cerium oxide, zirconium oxide, titanium oxide and/or aluminum oxide, and optionally (c) Al(OR)3, Si(OR)4, Ti(OR)4 and/or Zr(OR)4 where each R is an alkyl group having from 1 to 6 carbon atoms; and (2) drying the gel.
A Fischer-Tropsch catalyst comprising a reduced aerogel or xerogel formed from the destabilization of a colloidal mixture comprising a catalytically active metal selected from the group consisting of iron, cobalt, nickel, ruthenium, aluminum, and combinations thereof and a colloidal sol of a matrix metal selected from the group consisting of cerium, zirconium, titanium, aluminum, silicon, and combinations thereof wherein the catalytically active metal comprises greater than 0.1 mole fraction of the matrix metal and catalyst metal combined.
The catalyst of claim 11 wherein the catalytically active metal comprises cobalt and ruthenium and wherein the content of the catalytically active metal comprises from about 10 to 50 mole percent of the matrix metal and catalyst metal combined.
A method for preparing a Fischer-Tropsch catalyst with a catalytically active metal content of greater than 0.1 mole fraction in the final composition of the matrix metal and catalyst metal combined comprising mixing a colloidal sol of an oxide of a metal selected from the group consisting of cerium, zirconium, titanium, aluminum, silicon, and combinations thereof with a soluble salt of one or more catalytically active metals selected from the group consisting of iron, cobalt, nickel, and ruthenium, destabilizing the colloid to form a gel, and removing solvent from the gel.
Dependencies are inferred from the claim text.