Nickel-based catalyst for low temperature co oxidation prepared using atomic layer deposition and application thereof

Patent metadata

Field	Value
Publication number	US-2016199781-A1
Application number	US-201514829252-A
Country	US
Kind code	A1
Filing date	Aug 18, 2015
Priority date	Jan 14, 2015
Publication date	Jul 14, 2016
Grant date	—

Abstract

The present invention relates to a nickel-based catalyst for oxidizing carbon monoxide, which is prepared by forming nickel oxide on the surface of a mesoporous support by one or more cycles of atomic layer deposition, and a use thereof.
The nickel-based catalyst for oxidizing carbon monoxide according to the present invention is stable at high temperatures because the size of the nickel oxide particles can be restricted to nanometer scales even at high-temperature conditions. In addition, the nickel-based catalyst exhibits catalytic reactivity for oxidation of carbon monoxide even at room temperatures. Additionally, the catalytic activity, which has been deactivated after conducting the catalytic reaction, can be regenerated through annealing and increased gradually through repeated annealing.

First claim

What is claimed is:

1 . An apparatus for purifying an exhaust gas, in which carbon monoxide is oxidized by a nickel-based catalyst, wherein the nickel-based catalyst is prepared by forming nickel oxide on the surface of a mesoporous support by one or more cycles of atomic layer deposition.

2 . The apparatus for purifying an exhaust gas according to claim 1 , wherein oxidation of carbon monoxide included in an exhaust gas is conducted at 25° C. to 450° C.

3 . The apparatus for purifying an exhaust gas according to claim 1 , wherein the nickel-based catalyst is prepared by forming the nickel oxide on the surface of the support by atomic layer deposition and then annealing the resulting nickel oxide.

4 . The apparatus for purifying an exhaust gas according to claim 1 , wherein the nickel-based catalyst is prepared by regenerating its catalytic activity through annealing, after being used in oxidation of carbon monoxide.

5 . The apparatus for purifying an exhaust gas according to claim 1 , which is equipped with a means for annealing the nickel-based catalyst in order to regenerate its catalytic activity.

6 . The apparatus for purifying an exhaust gas according to claim 5 , wherein the catalytic activity for oxidation of carbon monoxide is regenerated by annealing the nickel-based catalyst at 100° C. to 500° C. for 1 hour to 5 hours.

7 . The apparatus for purifying an exhaust gas according to claim 1 , wherein the support is alumina, silica, zeolite, or a metal-organic framework.

8 . A method for removing carbon monoxide, which comprises conducting oxidation of carbon monoxide using a nickel-based catalyst, wherein the nickel-based catalyst is prepared by forming nickel oxide on the surface of a mesoporous support by one or more cycles of atomic layer deposition.

9 . The method for removing carbon monoxide according to claim 8 , wherein the oxidation of carbon monoxide is conducted at 25° C. to 450° C.

10 . The method for removing carbon monoxide according to claim 8 , wherein the nickel-based catalyst is prepared by forming the nickel oxide on the surface of the support by atomic layer deposition and then annealing the resulting nickel oxide.

11 . The method for removing carbon monoxide according to claim 8 , wherein the nickel-based catalyst is prepared by regenerating its catalytic activity through annealing, after being used in oxidation of carbon monoxide.

12 . The method for removing carbon monoxide according to claim 8 , which further comprises annealing the nickel-based catalyst in order to regenerate its catalytic activity, after conducting the oxidation of carbon monoxide.

13 . The method for removing carbon monoxide according to claim 12 , wherein the catalytic activity for oxidation of carbon monoxide is regenerated by annealing the nickel-based catalyst at 100° C. to 500° C. for 1 hour to 5 hours.

14 . The method for removing carbon monoxide according to claim 8 , wherein the support is alumina, silica, zeolite, or a metal-organic framework.

15 . A method for preparing a gas having carbon monoxide removed or reduced from a mixture gas comprising carbon monoxide, which comprises conducting oxidation of carbon monoxide of the mixture gas in the presence of a nickel-based catalyst, wherein the nickel-based catalyst is prepared by forming nickel oxide on the surface of a mesoporous support by one or more cycles of atomic layer deposition.

16 . The method for preparing a gas having carbon monoxide removed or reduced according to claim 15 , wherein the oxidation of carbon monoxide is conducted at 25° C. to 450° C.

17 . The method for preparing a gas having carbon monoxide removed or reduced according to claim 15 , wherein the nickel-based catalyst is prepared by forming the nickel oxide on the surface of the support by atomic layer deposition and then annealing the resulting nickel oxide.

18 . The method for preparing a gas having carbon monoxide removed or reduced according to claim 15 , wherein the nickel-based catalyst is prepared by regenerating its catalytic activity through annealing, after being used in oxidation of carbon monoxide.

19 . The method for preparing a gas having carbon monoxide removed or reduced according to claim 15 , which further comprises annealing the nickel-based catalyst in order to regenerate its catalytic activity, after conducting the oxidation of carbon monoxide.

20 . The method for preparing a gas having carbon monoxide removed or reduced according to claim 19 , wherein the catalytic activity for oxidation of carbon monoxide is regenerated by annealing the nickel-based catalyst at 100° C. to 500° C. for 1 hour to 5 hours.

Assignees

• Univ Sungkyunkwan Res & Bus

Inventors

• Kim Young Dok
• Kim Dae Han
• Lee Ju Ha
• Jeong Myung Geun
• Han Sang Wook

Classifications

• B01D2255/50

  Zeolites · CPC title

• B01D2255/20753

  Nickel · CPC title

• B01D53/8643

  Removing mixtures of carbon monoxide or hydrocarbons and nitrogen oxides · CPC title

• B01J23/755 Primary

  Nickel · CPC title

• B01J37/348

  Electrochemical processes, e.g. electrochemical deposition or anodisation · CPC title