Palladium, platinum, and gold catalysts for reverse water-gas shift and integrated fischer-tropsch processes

A method for performing a reverse water-gas shift reaction, the method comprising:

• contacting at a temperature in the range of 200-900° C. a supported reverse water-gas shift catalyst with a feed stream comprising CO2 and H2, to provide a product stream comprising CO and H2, the product stream having a lower concentration of CO2 and a higher concentration of CO than the feed stream;
• wherein the catalyst comprises:
• a support that is a cerium oxide support, a titanium oxide support, an aluminum oxide support, a zirconium oxide support, or a mixed oxide support comprising a mixture of two or more of cerium oxide, titanium oxide, aluminum oxide, and zirconium oxide;
• at least one of platinum, palladium, and gold, present in an amount in the range of 0.05 to 10 wt % of the catalyst, based on the total weight of the catalyst;
• and
• manganese, present in an amount in the range of 0.5 to 20 wt % of the catalyst, based on the total weight of the catalyst.

A process for performing an integrated Fischer-Tropsch process, the process comprising:

• providing a first feed stream comprising H2 and CO2;
• contacting at a first temperature in the range of 200-900° C. and at a first pressure a reverse water-gas shift catalyst with the first feed stream to perform a reverse water-gas shift reaction to provide a first product stream comprising CO and H2, the first product stream having a lower concentration of CO2 and a higher concentration of CO than the first feed stream;
• contacting at a second temperature and at a second pressure a Fischer-Tropsch catalyst with a second feed stream comprising H2 and at least a portion of CO of the first product stream to provide a second product stream comprising C5+ hydrocarbons,
• wherein the reverse water-gas shift catalyst is a supported reverse water-gas shift catalyst comprising:
• a support that is a cerium oxide support, a titanium oxide support, an aluminum oxide support, a zirconium oxide support, or a mixed oxide support comprising a mixture of two or more of cerium oxide, titanium oxide, aluminum oxide, and zirconium oxide;
• at least one of platinum, palladium, and gold, present in an amount in the range of 0.05 to 10 wt % of the catalyst, based on the total weight of the catalyst;
• and
• manganese, present in an amount in the range of 0.5 to 20 wt % of the catalyst, based on the total weight of the catalyst.

A supported reverse water-gas shift catalyst comprising:

• a support that is a cerium oxide support, a titanium oxide support, an aluminum oxide support, a zirconium oxide support, or a mixed oxide support comprising a mixture of two or more of cerium oxide, titanium oxide, aluminum oxide, and zirconium oxide;
• at least one of platinum, palladium, and gold, present in an amount in the range of 0.05 to 10 wt % of the catalyst, based on the total weight of the catalyst;
• and
• manganese, present in an amount in the range of 0.5 to 20 wt % of the catalyst, based on the total weight of the catalyst.