	US 12,076,707 B2
	Large crystal tunable adsorbents
Steven J. Pontonio, Eden, NY (US); Philip A. Barrett, Tonawanda, NY (US); Neil A. Stephenson, E. Amherst, NY (US); and Katie Held, Hamburg, NY (US)
Assigned to PRAXAIR TECHNOLOGY, INC., Danbury, CT (US)
Appl. No. 16/973,107
Filed by PRAXAIR TECHNOLOGY, INC., Danbury, CT (US)
PCT Filed Jul. 1, 2019, PCT No. PCT/US2019/040076 § 371(c)(1), (2) Date Dec. 8, 2020, PCT Pub. No. WO2020/009968, PCT Pub. Date Jan. 9, 2020.
Claims priority of provisional application 62/693,045, filed on Jul. 2, 2018.
Prior Publication US 2021/0252482 A1, Aug. 19, 2021
Int. Cl. B01J 20/32 (2006.01); B01D 53/04 (2006.01); B01J 20/18 (2006.01); B01J 20/28 (2006.01)

CPC B01J 20/3204 (2013.01) [B01D 53/04 (2013.01); B01J 20/186 (2013.01); B01J 20/28004 (2013.01); B01J 20/28011 (2013.01); B01J 20/2808 (2013.01); B01J 20/3225 (2013.01); B01J 20/3244 (2013.01); B01J 20/3272 (2013.01); B01D 2253/108 (2013.01); B01D 2253/202 (2013.01); B01D 2253/25 (2013.01); B01D 2253/304 (2013.01); B01D 2253/308 (2013.01); B01D 2256/10 (2013.01); B01D 2256/20 (2013.01); B01D 2256/245 (2013.01); B01D 2257/102 (2013.01); B01D 2257/104 (2013.01); B01D 2257/504 (2013.01); B01J 2220/46 (2013.01)]

19 Claims

1. A surface modified adsorbent which comprises a microporous inorganic solid, wherein the surface of said microporous inorganic solid is modified with a coating comprised of a silicone derived species, wherein said species is derived from one or more silicone precursors of formula I

[(R)₂SiO]_n

and/or of formula II:

RSiO_1.5

and/or of formula III:

R[(R)₂SiO]_nR

or any combination thereof, wherein each R substituent is the same or different and is selected from a substituted or unsubstituted organic compound, wherein said microporous inorganic solid has a mean crystal size from about 5 to about 10 μm and a skeletal density of ≥1.00 gr./cc.