US 12,115,514 B2
Adsorbent for removing carbonyl sulfide contained in a stream containing an olefin
Chihiro Kojima, Kitakyushu (JP); Shingo Sakai, Kitakyushu (JP); Takahiro Yashima, Kitakyushu (JP); Kaoru Takahashi, Niigata (JP); Atsushi Okita, Ibaraki-gun (JP); and Kazunori Honda, Ibaraki-gun (JP)
Assigned to JGC CATALYSTS AND CHEMICALS LTD., Kawasaki (JP)
Appl. No. 17/041,010
Filed by JGC CATALYSTS AND CHEMICALS LTD., Kawasaki (JP)
PCT Filed Mar. 28, 2019, PCT No. PCT/JP2019/013524
§ 371(c)(1), (2) Date Sep. 24, 2020,
PCT Pub. No. WO2019/189550, PCT Pub. Date Oct. 3, 2019.
Claims priority of application No. 2018-065854 (JP), filed on Mar. 29, 2018.
Prior Publication US 2021/0138430 A1, May 13, 2021
Int. Cl. B01J 20/08 (2006.01); B01J 20/30 (2006.01); B01J 20/32 (2006.01)
CPC B01J 20/08 (2013.01) [B01J 20/3007 (2013.01); B01J 20/3021 (2013.01); B01J 20/3042 (2013.01); B01J 20/3078 (2013.01); B01J 20/3204 (2013.01); B01J 2220/42 (2013.01)] 10 Claims
 
1. An adsorbent for removing carbonyl sulfide contained in a stream containing an olefin, the adsorbent comprising:
copper oxide; and
an aluminum compound, wherein
the aluminum compound is at least one selected from aluminum hydroxide and aluminum oxide, wherein a crystal structure of the aluminum hydroxide is pseudo-boehmite and a crystal structure of the aluminum oxide is at least one crystal structure selected from the group consisting of χ and ρ,
a content of the aluminum compound is in a range from 10 mass % to 50 mass % in terms of Al,
a molar ratio (Cu/Al) of copper to aluminum is in a range from 0.5 to less than 1,
the adsorbent has an NH3 desorption as calculated based on a temperature-programmed desorption of ammonia in a temperature region ranging from 100 degrees C. to 200 degrees C. in a range from more than 0.001 mmol/g to 1 mmol/g or less, and
the adsorbent comprises less than 1 mass % of a component containing a transition metal other than copper.