Novel nitrogen-doped copper nanocatalysts for carbon dioxide reduction reaction

Patent metadata

Field	Value
Publication number	US-2019316264-A1
Application number	US-201815953079-A
Country	US
Kind code	A1
Filing date	Apr 13, 2018
Priority date	Apr 13, 2018
Publication date	Oct 17, 2019
Grant date	—

Abstract

Catalysts, particularly nanocatalysts, useful for converting carbon dioxide into desired conversion products, such as sustainable chemicals and fuels. The nanocatalysts may comprise at least one nanoparticle having a main component and a secondary component, wherein at least one of the main component and the secondary component facilitates the conversion of carbon dioxide. The present disclosure also relates to methods for preparing the nanocatalysts described herein and methods of using the same.

First claim

What is claimed is:

1 . A method for making a nanocatalyst nanoparticle comprising:
providing a precursor nanoparticle having a precursor component, wherein the precursor component comprises a chemical bond; breaking the chemical bond; and obtaining the nanocatalyst nanoparticle, wherein the nanocatalyst nanoparticle comprises a main component and a secondary component doped on a surface of the nanocatalyst nanoparticle.

2 . The method according to claim 1 , wherein precursor component comprises a first portion and a second portion, wherein the second portion is the secondary component.

3 . The method according to claim 2 , wherein the chemical bond is between the first portion and the second portion, and wherein breaking the chemical bond comprises removing the first portion from the precursor nanoparticle to provide the nanocatalyst nanoparticle.

4 . The method according to claim 3 , wherein the bond is a carbon-nitrogen bond.

5 . The method according to claim 3 , wherein the second portion is nitrogen.

6 . The method according to claim 4 , wherein the precursor component comprises an alkylamine.

7 . The method according to claim 6 , wherein the alkylamine is selected from the group consisting of tetradecylamine (TDA), hexadecylamine (HDA), octadecylamine (ODA), and combinations thereof.

8 . The method according to claim 1 , wherein the main component comprises a carbon dioxide conversion catalyst.

9 . The method according to claim 8 , wherein the main component comprises copper.

10 . The method according to claim 1 , wherein the secondary component comprises nitrogen.

11 . The method according to claim 1 , wherein the method further comprises an Ostwald ripening step.

12 . The method according to claim 1 , wherein breaking the chemical bond comprises subjecting the precursor nanoparticle to an elevated temperature for a selected period of time.

13 . The method according to claim 12 , wherein the elevated temperature is no higher than about 240° C.

14 . The method according to claim 13 , wherein the elevated temperature is no higher than about 220° C.

15 . The method according to claim 12 , wherein the selected amount of time is between about 20 and 120 minutes.

16 . The method according to claim 1 , wherein the method further comprises a first step of providing an ionic solution comprising ions of the main component and ions of the precursor component, wherein the ions of the main component are present in the ionic solution at a concentration of between about 0.03 and 0.12 mol/L.

17 . The method according to claim 1 , wherein the method comprises a single synthesis step.

18 . The method according to claim 2 , wherein the method comprises at least two synthesis steps.

19 . A nanocatalyst nanoparticle prepared according to the method of claim 1 , wherein the main component comprises copper and the secondary component comprises nitrogen.

20 . A method for converting carbon dioxide into one or more products, the method comprising:
providing one or more nanocatalyst nanoparticles according to claim 19 , and contacting carbon dioxide with the one or more nanocatalyst nanoparticles to catalyze conversion of the carbon dioxide into one or more products.

Assignees

• Honda Motor Co Ltd

Inventors

• Chen Shutang
• Chen Gugang

Classifications

• C25B1/00

  Electrolytic production of inorganic compounds or non-metals · CPC title

• B01J23/72

  Copper · CPC title

• B01J37/0072

  Preparation of particles, e.g. dispersion of droplets in an oil bath · CPC title

• B01J27/24 Primary

  Nitrogen compounds · CPC title

• C01B21/0625 Primary

  with copper · CPC title