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US 11,667,539 B2Granted
Method for preparation of oxide support-nanoparticle composites
AssigneeKorea Advanced Institute of Science and Technology
InventorsWooChul Jung, Jun Kyu Kim, Bonjae Koo
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Abstract
There is provided a method for preparation of oxide support-nanoparticle composites, in which metal nanoparticles decorate with uniform size and distribution on the surface of an oxide support, and thus, high performance oxide support-nanoparticle composites that can be applied in the fields of heterogeneous catalysis can be provided.
Claims9
A method for preparation of oxide support-nanoparticle composites, comprising the steps of:
- preparing a support consisting of perovskite oxide represented by the following Chemical Formula 1 (step 1);
- and
- heat treating the support at 350 to 900° C. under an oxygen partial pressure of 10−26 to 10−17 atm to form nanoparticles on the support (step 2):
- AxB1-yB′yO3 [Chemical Formula 1]
- in Chemical Formula 1,
- x is 0.9 to 1,
- y is 0.05 to 0.25,
- A is one or more selected from the group consisting of Pr, Nd, Ca, Sr, Ba, and La,
- B is Zr, Cr, Al, Ti, Mn, Fe, or Co, and
- B′ is Mn, Fe, Co, Ni, Cu, Pd, Ir, Ru, or Pt,
- with the proviso that B and B′ are not the same.
8 more elements
Dependencies are inferred from the claim text.