	US 11,666,889 B2
	Inorganic oxide
Yoshitaka Kawakami, Ehime (JP); and Hiroyuki Ando, Ehime (JP)
Assigned to Sumitomo Chemical Company, Limited, Tokyo (JP)
Appl. No. 16/969,339
Filed by Sumitomo Chemical Company, Limited, Tokyo (JP)
PCT Filed Feb. 15, 2019, PCT No. PCT/JP2019/005714 § 371(c)(1), (2) Date Aug. 12, 2020, PCT Pub. No. WO2019/160124, PCT Pub. Date Aug. 22, 2019.
Claims priority of application No. JP2018-025198 (JP), filed on Feb. 15, 2018.
Prior Publication US 2021/0046454 A1, Feb. 18, 2021
Int. Cl. B01J 21/04 (2006.01); B01J 21/06 (2006.01); B01J 23/10 (2006.01); B01J 37/04 (2006.01); B01J 37/08 (2006.01); B01D 53/94 (2006.01); B01J 23/46 (2006.01); C01G 25/00 (2006.01); F01N 3/28 (2006.01); F01N 3/10 (2006.01)

CPC B01J 23/10 (2013.01) [B01D 53/945 (2013.01); B01J 23/464 (2013.01); C01G 25/006 (2013.01); F01N 3/2803 (2013.01); B01D 2255/1025 (2013.01); C01P 2002/50 (2013.01); F01N 3/101 (2013.01); F01N 2330/02 (2013.01); F01N 2330/30 (2013.01); F01N 2370/02 (2013.01)]

8 Claims

1. A powder inorganic oxide comprising Al, Ce and Zr as constituent elements,

wherein a molded product, which is produced by placing 4.0 g of the inorganic oxide in a cylindrical container having a diameter of 20 mm and performing uniaxial molding under conditions of room temperature and pressure of 29.4 MPa for 30 sec., has a density of 1.0 to 1.3 g/ml and

wherein an average shrinkage percentage calculated by the following formula is not more than 14.0%:

average shrinkage percentage (%)=100×{(1−(c)/(a))+(1−(d)/(b))}/2,

wherein (a) and (b) respectively represent a diameter and a height of the molded product, and (c) and (d) respectively represent a diameter and a height of a calcined product obtained by heating the molded product from room temperature to 1300° C. under an air atmosphere at a temperature-rising rate of 200° C./hr., maintaining the product at 1300° C. for 2 hr., and lowering the temperature thereof from 1300° C. to room temperature at a temperature-decreasing rate of 200° C./hr.