US 12,330,133 B2
Exhaust gas purifying composition and production method therefor
Hidekazu Goto, Saitama (JP); Jo Nishikawa, Saitama (JP); and Mayuko Suwa, Saitama (JP)
Assigned to Mitsui Mining & Smelting Co., Ltd., Tokyo (JP)
Appl. No. 17/629,217
Filed by Mitsui Mining & Smelting Co., Ltd., Tokyo (JP)
PCT Filed Jun. 5, 2020, PCT No. PCT/JP2020/022264
§ 371(c)(1), (2) Date Jan. 21, 2022,
PCT Pub. No. WO2021/044687, PCT Pub. Date Mar. 11, 2021.
Claims priority of application No. 2019-161816 (JP), filed on Sep. 5, 2019.
Prior Publication US 2022/0258123 A1, Aug. 18, 2022
Int. Cl. B01J 20/18 (2006.01); B01D 53/92 (2006.01); B01J 20/28 (2006.01); B01J 20/30 (2006.01)
CPC B01J 20/18 (2013.01) [B01D 53/92 (2013.01); B01J 20/28069 (2013.01); B01J 20/2808 (2013.01); B01J 20/28083 (2013.01); B01J 20/3078 (2013.01); B01D 2258/01 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An exhaust gas purifying composition, comprising a phosphorus-containing BEA-type zeolite,
the phosphorus-containing BEA-type zeolite having a pore volume ratio (V2/V1) of a micropore volume V2 to a mesopore volume V1 of 2.0 or more,
wherein the micropore volume V2 has a pore diameter in a range of 2 nm or less as measured by a Saito-Foley (SF) method, and the mesopore volume V1 has a pore diameter in a range of 2 nm or more and 100 nm or less as measured by a Barrett-Joyner-Halenda (BJH) method, and
wherein the phosphorus-containing BEA-type zeolite has a molar ratio of SiO2/Al2O3 in a range of 10 or more and 100 or less.