Sulfur tolerant catalyst, catalyst systems, and methods of catalytic hydrothermal gasification
AssigneeBattelle Memorial Institute
InventorsHuamin Wang, Todd R. Hart, Andrew J. Schmidt, Mariefel V. Olarte, Suh-Jane Lee
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Abstract
Ru—Mo sulfide bimetallic catalysts are disclosed for catalytic hydrothermal gasification (CHG) of aqueous streams produced from hydrothermal liquefaction of wet wastes. This catalyst is sulfur resistant and requires less Ru loading compared to the current catalyst, which addresses the most critical challenges for CHG. The CHG process with this catalyst converts the aqueous stream to CH4, H2, CO2, and other light hydrocarbons as well as cleaned water that can be recycled or released into the environment.
Claims21
A CHG catalyst, comprising:
- a mixture of Ru and Mo disposed on the surface of a support;
- wherein the support comprises carbon or a metal oxide;
- Ru in a range of 0.1 to 10 wt %;
- Mo in a range of 1 to 30 wt %;
- and
- S in a range of 1 to 30 wt %.
A method of making a CHG catalyst, comprising:
- providing a catalyst intermediate comprising:
- Ru in a range of 0.1 to 10 wt % and Mo in a range of 1 to 30 wt % on a catalyst support;
- and
- sulfiding the catalyst at a temperature from about 200° C. to about 450° C. in the presence of a sulfiding agent.
Dependencies are inferred from the claim text.