US 12,138,597 B2
Method for making and using a gas separation membrane
Isam H. Aljundi, Dhahran (SA); and Abdelrahman M. Awad, Dhahran (SA)
Assigned to KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed by KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed on Mar. 15, 2024, as Appl. No. 18/607,129.
Application 18/607,129 is a continuation of application No. 18/154,169, filed on Jan. 13, 2023, granted, now 11,969,694.
Application 18/154,169 is a continuation of application No. 16/238,010, filed on Jan. 2, 2019, granted, now 11,571,665, issued on Feb. 7, 2023.
Prior Publication US 2024/0278189 A1, Aug. 22, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. B01D 69/14 (2006.01); B01D 53/22 (2006.01); B01D 67/00 (2006.01); B01D 69/12 (2006.01); B01D 71/02 (2006.01); B01D 71/56 (2006.01)
CPC B01D 69/148 (2013.01) [B01D 53/228 (2013.01); B01D 67/00791 (2022.08); B01D 67/00793 (2022.08); B01D 69/12 (2013.01); B01D 69/1251 (2022.08); B01D 71/0211 (2022.08); B01D 71/0212 (2022.08); B01D 71/56 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method for making and using a gas separation membrane, comprising:
first, forming a support layer by phase inversion of a solution of polysulfone in an organic solvent to form a porous support, then
forming a polyamide layer on the porous support by interfacial polymerization of a mixture comprising piperazine, isophthaloyl chloride and carbide-derived carbon (CDC) nanoparticles to form a precursor film, then
drying and curing the precursor film to form a multilayered membrane;
passing a gas mixture, comprising CO2 and at least one additional gas, through a gas filter to form a permeate that is enriched in CO2 content and a gaseous composition having a concentration of CO2 that is less than a concentration of CO2 in the gas mixture,
wherein the gas filter comprises:
a plurality of the multilayered membranes fixed inside a cell;
wherein each multilayered membrane of the plurality of multilayered membranes comprises:
the support layer, comprising at least 50 wt. % of the polysulfone;
the polyamide layer, comprising at least 50 wt. % of the piperazine and the isophthaloyl chloride, in condensation polymerized form; and
wherein the CDC nanoparticles are selected from the group consisting of SiC, Fe3C, WC, Ti3SiC2, ZrC, B4C, TaC, Mo2C, and TiC-derived nanoparticles, wherein the CDC nanoparticles are embedded in the second layer in an amount of from 0.005 to 0.5 wt. %, based on a total weight of the second layer,
wherein the first layer directly contacts the second layer.