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US 11,697,625 B2Granted
Direct synthesis of light olefins from carbon dioxide using yttria-stabilized zirconia support
AssigneeThe Regents of the University of California
InventorsErdem Sasmaz, Sunkyu Kim
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Abstract
The present invention features a direct synthesis of light olefins through the hydrogenation of carbon dioxide. In2O3 supported on cubic phase yttria-stabilized zirconia is used as a catalyst and is mixed with a molecular sieve to perform the hydrogenation. The cubic crystal structure of the yttria-stabilized zirconium dioxide is an excellent support for indium oxide particles and prevents their deactivation during CO2 hydrogenation. This direct synthesis route promotes a stable and efficient method for producing light olefins.
Claims7
A method of synthesizing a light olefin, the method comprising:
- a. precipitating an indium-based catalyst onto cubic phase yttria-stabilized zirconia (YSZ) to produce a supported indium-based catalyst;
- b. adding the supported indium-based catalyst into a reactor;
- c. mixing a molecular sieve with the supported indium-based catalyst in the reactor;
- d. introducing a stream of hydrogen gas and a stream of carbon dioxide gas into the reactor;
- and
- e. heating the reactor, wherein a hydrogenation reaction occurs between the hydrogen gas and carbon dioxide gas to synthesize the light olefin;
- wherein the cubic phase YSZ prevents deactivation of the indium-based catalyst during hydrogenation.
4 more elements
Dependencies are inferred from the claim text.