# US 11,305,266 B2 · Catalyst and manufacturing method thereof

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- Number: US 11,305,266 B2
- Document ID: US11305266B2
- Status: Granted
- Kind: B2
- Application number: 16/887,163
- Filed: 2020-05-29
- Published: 2021-07-08
- Granted: 2022-04-19
- Earliest claimed: 2020-01-03
- Assignees: Hyundai Motor Company; Kia Motors Corporation; Heesung Catalysts Corporation
- Applicants: Hyundai Motor Company; Kia Motors Corporation; Heesung Catalysts Corporation
- Inventors: Young Jin Kim; Chang Hwan Kim; Pyung Soon Kim; Eunseok Kim; Yong Sul Kim
- Web page: https://patentgrep.com/patent/US11305266B2

## CPC

- B01J 29/80: Mixtures of different zeolites
- B01J 29/072: Iron group metals or copper
- B01J 29/56: Iron group metals or copper
- B01J 29/7607: {A-type}
- B01J 29/763: {CHA-type, e.g. Chabazite, LZ-218}
- B01J 35/19: {Catalysts containing parts with different compositions}
- B01J 37/0201: {Impregnation}
- B01J 37/04: Mixing {(B01J37/0009, B01J37/0018 take precedence)}
- B01J 37/10: in the presence of water, e.g. steam
- B01J 37/30: Ion-exchange
- B01D 53/8628: {Processes characterised by a specific catalyst}
- B01D 53/9418: {for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas}
- B01D 2255/20761: Copper
- B01D 2255/50: Zeolites
- B01D 2257/40: Nitrogen compounds
- B01D 2257/404: Nitrogen oxides other than dinitrogen oxide
- B01D 2258/01: Engine exhaust gases
- B01D 2258/012: Diesel engines and lean burn gasoline engines
- B01J 2029/062: {Mixtures of different aluminosilicates}
- B01J 2229/186: not in framework positions
- B01J 2229/40: Special temperature treatment, i.e. other than just for template removal
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)

## Abstract

The present disclosures relate to a catalyst for removing a nitrogen oxide and a manufacturing method thereof, and the catalyst for removing the nitrogen oxide includes: a first catalyst that includes a zeolite support containing copper and having a first framework; and a second catalyst that is physically mixed with the first catalyst and includes a zeolite support containing copper and having a second framework different from the first framework.

## Claims

### Claim 1

A catalyst for removing a nitrogen oxide, comprising:
a first catalyst that includes a zeolite support containing copper and having a first framework; and
a second catalyst that is physically mixed with the first catalyst and includes a zeolite support containing copper and having a second framework different from the first frameworks
wherein the first framework is LTA;
wherein the second framework is at least one of CHA, AEI, and AFX; and
wherein a mixed ratio of the first catalyst and the second catalyst is in a range of 5:1 to 1:3 as a weight ratio.

### Claim 2 (depends on 1)

The catalyst for removing the nitrogen oxide of claim 1, wherein a molar ratio of Si/Al in each of the first catalyst and the second catalyst is 1 to 100.

### Claim 3 (depends on 1)

The catalyst for removing the nitrogen oxide of claim 1, wherein a molar ratio of Cu/Al in each of the first catalyst and the second catalyst is 0.1 to 0.5.

### Claim 4 (depends on 1)

The catalyst for removing the nitrogen oxide of claim 1, wherein a content of Cu in each of the first catalyst and the second catalyst is 1 wt % to 5 wt %.

### Claim 5 (depends on 1)

The catalyst for removing the nitrogen oxide of claim 1, further comprising
a third catalyst that includes a zeolite support containing copper and having a third framework different from the first and second frameworks.

### Claim 6 (depends on 5)

The catalyst for removing the nitrogen oxide of claim 5, wherein a mixed ratio of the first catalyst, the second catalyst, and the third catalyst is in a range of 10:1:1 to 1:1:6 as a weight ratio.

### Claim 7 (depends on 5)

The catalyst for removing the nitrogen oxide of claim 5, wherein a molar ratio of Cu/Al in the third catalyst is in a range of 0.1 to 0.5.

### Claim 8 (depends on 5)

The catalyst for removing the nitrogen oxide of claim 5, wherein a content of Cu in the third catalyst is 1 wt % to 5 wt %.