Method for preparing single-atom catalyst supported on carbon support

Patent metadata

Field	Value
Publication number	US-11801494-B2
Application number	US-201917271206-A
Country	US
Kind code	B2
Filing date	Nov 6, 2019
Priority date	Nov 8, 2018
Publication date	Oct 31, 2023
Grant date	Oct 31, 2023

Abstract

Provided is a method for manufacturing a single-atom catalyst supported on a carbon support, including treating a mixture of a precursor of a carbon support and a precursor of a hetero element other than carbon through a dry vapor phase process, thereby supporting, on a carbon support, a single-atom catalyst containing a hetero element other than carbon.

First claim

The invention claimed is:

1. A method for manufacturing a single-atom catalyst supported on a precursor formed carbon support, the method comprising:
treating a mixture of a precursor including carbon and a precursor of a hetero element other than carbon in a dry vapor phase process to provide a single-atom catalyst containing a hetero element other than carbon,
wherein the single-atom catalyst is positioned on the precursor formed carbon support from the precursor including carbon during the dry vapor phase process,
wherein the precursor formed carbon support comprises at least one of graphene, graphene oxide, fullerene, carbon nanotubes (CNT), carbon nanofibers, carbon nanobelts, carbon nanoonions, or carbon nanohorns.

2. The method of claim 1 , wherein the precursor including carbon comprises at least one selected from graphite, C 2 H 2 , CH 4 , C 2 H 4 , C 2 H 6 , or C 2 H 5 OH.

3. The method of claim 1 , wherein the precursor of a hetero element other than carbon comprises: at least one non-metal-containing precursor including at least one non-metal selected from nitrogen (N), boron (B), sulfur (S), selenium (Se), phosphorus (P), fluorine (F), chlorine (Cl), bromine (Br), or iodine (I); at least one metal-containing precursor including at least one metal selected from Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, La, Zr, Hf, Nb, Ta, Mo, W, Tc, Re, Ru, Os, Rh, Ir, Pd, of Pt, Ag, Au, Cd, Hg, Ga, Ge, In, Sn, Sb, Tl, Pb, Bi, a lanthanide metal, or an actinide metal; or a combination thereof.

4. The method of claim 3 , wherein the at least one non-metal-containing precursor is a nitrogen-containing precursor comprising at least one of N 2 , NH 3 , N 2 H 4 , R x NH 3-x (R is a C 1 to C 6 alkyl group, and x is 1 or 2), R x N 2 H 4-x (R is a C 1 to C 6 alkyl group, and x is an integer of 3 or less), a solid inorganic material containing a nitrogen element, or a nitrogen element-containing polymer.

5. The method of claim 3 , wherein the metal-containing precursor comprises at least one of CoCl 2 , CoBr 2 , Co(NO 3 ) 2 , Co(OH) 2 , Co(CH 3 COO) 2 , FeCl 2 , FeBr 2 , Fe(NO 3 ) 2 , Fe(OH) 2 , Fe(CH 3 COO) 2 , NiCl 2 , NiBr 2 , Ni(NO 3 ) 2 , Ni(OH) 2 , Ni(CH 3 COO) 2 , RhCl 2 , RhBr 2 , Rh(NO 3 ) 2 , Rh(OH) 2 , Rh(CH 3 COO) 2 , IrCl 2 , IrBr 2 , Ir(NO 3 ) 2 , Ir(OH) 2 , or Ir(CH 3 COO) 2 .

6. The method of claim 1 , wherein the precursor of a hetero element other than carbon comprises: at least one non-metal-containing precursor including at least one non-metal selected from nitrogen (N), boron (B), sulfur (S), or phosphorus (P); at least one metal-containing precursor including at least one metal selected from Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Mo, W, Ru, Rh, Ir, Pd, Pt, Ag, Au, Cd, Ga, Ge, In, Sn, Sb, or Tl; or a combination thereof.

7. The method of claim 1 , wherein the precursor of a hetero element other than carbon comprises: at least one non-metal-containing precursor containing at least one non-metal selected from nitrogen (N), boron (B), sulfur (S), or phosphorus (P); at least one metal-containing precursor containing at least one metal selected from Co, Fe, Ni, Rh, or Ir; or a combination thereof.

8. The method of claim 1 , wherein the amount of the precursor of a hetero element other than carbon in the mixture is about 0.01% by weight to about 10% by weight with respect to the total weight of the precursor including carbon.

9. The method of claim 1 , wherein the dry vapor phase process is performed through at least one process among arc discharge, thermal chemical vapor deposition, plasma synthesis, high-temperature plasma, plasma-enhanced chemical vapor deposition, laser evaporation, laser ablation, and vapor phase growth.

10. The method of claim 1 , wherein the dry vapor phase process is performed through arc discharge at a voltage of about 10 V to about 100 V and a current of about 10 A to about 300 A.

11. The method of claim 1 , wherein the precursor formed carbon support has at least one structure selected from a spherical shape, a rod shape, a tube shape, a horn shape, or a plate shape.

12. The method of claim 1 , wherein the precursor formed carbon support has a horn-shaped structure.

13. The method of claim 1 , wherein the precursor formed carbon support has an average diameter of about 1 nm to about 10 μm.

14. The method of claim 1 , wherein the hetero element other than carbon comprises: at least one non-metal selected from nitrogen (N), boron (B), sulfur (S), selenium (Se), phosphorus (P), fluorine (F), chlorine (Cl), bromine (Br), or iodine (I); at least one metal selected from Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, La, Zr, Hf, Nb, Ta, Mo, W, Tc, Re, Ru, Os, Rh, Ir, Pd, of Pt, Ag, Au, Cd, Hg, Ga, Ge, In, Sn, Sb, TI, Pb, Bi, a lanthanide metal, or an actinide metal; or a combination thereof.

15. The method of claim 14 , wherein the metal comprises at least one of cobalt (Co), iron (Fe), nickel (Ni), rhodium (Rh), or iridium (Ir).

16. The method of claim 1 , wherein the hetero element other than carbon comprises nitrogen (N), cobalt (Co), or a combination thereof.

17. The method of claim 1 , wherein the supported amount of the single-atom catalyst is about 0.01% by weight to about 10% by weight with respect to the total weight of the precursor formed carbon support.

18. The method of claim 1 , wherein the single-atom catalyst is an electrochemical catalyst.

19. A single-atom catalyst supported on the precursor formed carbon support manufactured through the manufacturing method according to claim 1 .

20. The method of claim 1 , wherein the single-atom catalyst is a chemical reaction catalyst.

21. A method for manufacturing a single-atom catalyst supported on a carbon support, the method comprising treating a mixture of a precursor including carbon and a precursor of a hetero element other than carbon in an arc discharge process to provide a single-atom catalyst containing a hetero element other than carbon on a carbon support;
wherein the arc discharge process is conducted at a voltage of about 10 V to about 100 V and a current of about 10 A to about 300 A.

Assignees

• Korea Inst Sci & Tech

Inventors

• Bae Sukang
• Lee Seoung-Ki
• Jeon Dae-Young
• Kim Myung Jong
• Kim Nam Dong

Classifications

• B01J23/755 Primary

  Nickel · CPC title

• B01J21/02 Primary

  Boron or aluminium; Oxides or hydroxides thereof · CPC title

• B01J21/18

  Carbon · CPC title

• B01J23/464

  Rhodium · CPC title

• B01J23/468

  Iridium · CPC title