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US 11,518,722 B2Granted
Method for preparation of nanoceria supported atomic noble metal catalysts and the application of platinum single atom catalysts for direct methane conversion
AssigneeThe Johns Hopkins University
InventorsChao Wang, Pengfei Xie, Tiancheng Pu
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Abstract
Described are methods for converting methane to olefins, aromatics, or a combination thereof using a single atom catalyst comprising CeO2 nanoparticles impregnated with individual atoms of noble metals including Pt, Pd, Rh, Ru, Ag, Au, Ir, or a combination thereof. These single atom catalysts of the present invention are heated with methane to form olefins and aromatics.
Claims10
A single atom catalyst comprising:
- CeO2 nanoparticles impregnated with individual noble metal atoms;
- and
- wherein an atomic ratio of a Ce4+ oxidation state to a Ce3+ oxidation state is 1.188.
A single atom catalyst comprising:
- CeO2 nanoparticles impregnated with individual platinum atoms;
- and
- binding energies in a range of 50 eV to 90 eV;
- and
- wherein an atomic ratio of a Ce4+ oxidation state to a Ce3+ oxidation state is 1.188.
2 more elements
Dependencies are inferred from the claim text.