Patent 12134068 was granted and assigned to SAUDI ARABIAN OIL COMPANY on November, 2024 by the United States Patent and Trademark Office.
A gas separation membrane, methods of forming the membrane, and methods of using the membrane for gas separation are provided. An exemplary gas separation membrane includes a cellulosic matrix and a polymer of intrinsic microporosity (PIM). The PIM includes chains coupled by a heat-treating under vacuum.