US 12,151,216 B2
Zeolite membrane composite, method of producing zeolite membrane composite, and separation method
Makiko Ichikawa, Nagoya (JP); Kenji Yajima, Nagoya (JP); Makoto Miyahara, Tajimi (JP); and Naoto Kinoshita, Nagoya (JP)
Assigned to NGK INSULATORS, LTD., Nagoya (JP)
Filed by NGK INSULATORS, LTD., Nagoya (JP)
Filed on Jul. 1, 2021, as Appl. No. 17/305,184.
Application 17/305,184 is a continuation of application No. PCT/JP2020/006209, filed on Feb. 18, 2020.
Claims priority of application No. 2019-038444 (JP), filed on Mar. 4, 2019.
Prior Publication US 2021/0322932 A1, Oct. 21, 2021
Int. Cl. B01D 71/02 (2006.01); B01D 53/22 (2006.01); B01D 67/00 (2006.01); B01D 69/02 (2006.01); B01D 69/10 (2006.01); B01D 69/12 (2006.01)
CPC B01D 71/0281 (2022.08) [B01D 53/228 (2013.01); B01D 67/0051 (2013.01); B01D 69/02 (2013.01); B01D 69/108 (2022.08); B01D 69/1213 (2022.08); B01D 2256/245 (2013.01); B01D 2257/504 (2013.01); B01D 2323/12 (2013.01); B01D 2325/023 (2013.01); B01D 2325/04 (2013.01); B01D 2325/20 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A zeolite membrane composite comprising:
a porous support; and
a zeolite membrane formed on said support;
wherein said zeolite membrane includes:
a low-density layer that covers said support; and
a compact layer that covers said low-density layer and has a higher content of a zeolite crystalline phase than said low-density layer;
wherein said compact layer contains zeolite crystals with an average particle diameter greater than an average particle diameter of zeolite crystals contained in said low-density layer.