	US 11,724,249 B2
	Cu—P co-supported zeolite, and selective catalytic reduction catalyst and catalyst for exhaust gas using same
Yukio Takagi, Minato-ku (JP); Kiyohiko Saito, Minato-ku (JP); Yasuyuki Banno, Minato-ku (JP); and Makoto Nagata, Minato-ku (JP)
Assigned to N.E. CHEMCAT CORPORATION, Minato-ku (JP)
Appl. No. 17/283,401
Filed by N.E. CHEMCAT CORPORATION, Minato-ku (JP)
PCT Filed Oct. 16, 2019, PCT No. PCT/JP2019/040735 § 371(c)(1), (2) Date Apr. 7, 2021, PCT Pub. No. WO2020/085169, PCT Pub. Date Apr. 30, 2020.
Claims priority of application No. 2018-199527 (JP), filed on Oct. 23, 2018; and application No. 2018-220354 (JP), filed on Nov. 26, 2018.
Prior Publication US 2021/0379573 A1, Dec. 9, 2021
Int. Cl. B01J 29/76 (2006.01); B01D 53/94 (2006.01); B01J 35/02 (2006.01); B01J 35/04 (2006.01); B01J 35/10 (2006.01); C01B 39/48 (2006.01)

CPC B01J 29/763 (2013.01) [B01D 53/9418 (2013.01); B01J 35/023 (2013.01); B01J 35/04 (2013.01); B01J 35/1061 (2013.01); B01J 35/1066 (2013.01); C01B 39/48 (2013.01); B01D 2255/20761 (2013.01); B01D 2255/50 (2013.01); C01P 2002/72 (2013.01)]

8 Claims

1. A Cu—P co-supported zeolite comprising a small pore size zeolite, and an extra framework copper atom and an extra framework phosphorus atom supported on the small pore size zeolite,

wherein

the small pore size zeolite has at least one framework structure of CHA in measurement by powder X-ray diffractomety,

the Cu—P co-supported zeolite has a silica-alumina ratio (SiO₂/Al₂O₃) of from 7 to 20,

the Cu—P co-supported zeolite has a ratio of the copper atom to a tetrahedral site in the zeolite (Cu/T) of from 0.005 to 0.060,

the Cu—P co-supported zeolite has a ratio of the phosphorus atom to the T atom (P/T) of from 0.005 to 0.060, and

the Cu—P co-supported zeolite has a ratio of the phosphorus atom to the copper atom (P/Cu) of from 1.0 to 1.5.