Carbon molecular sieve gas separation membranes based on an intrinsically microporous polyimide precursor

• Published in: Carbon (New York) Vol. 62; pp. 88 - 96
• Main Authors: Ma, Xiaohua, Swaidan, Raja, Teng, Baiyang, Tan, Hua, Salinas, Octavio, Litwiller, Eric, Han, Yu, Pinnau, Ingo
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.10.2013; Elsevier
• Subjects: adsorption; Amorphous semiconductors, metals, and alloys; Carbon; Carbon dioxide; Chemistry; Colloidal state and disperse state; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Disordered solids; Exact sciences and technology; Fullerenes and related materials; diamonds, graphite; Gas separation; General and physical chemistry; Heat treatment; Materials science; Membranes; methane; Permeability; Physics; Polyimide resins; polymers; Porous materials; Selectivity; Specific materials; Structure of solids and liquids; crystallography; surface area; Methane; Membranes; Transport properties; Separation; Porous materials; Carbon dioxide; Selectivity; Molecular gas; Permeability; Molecular sieves; Carbon; Precursor; Heat treatments; Chemical reduction; Microporosity; Polyimides; Transport processes; Surface area; Polymers; Amorphous state structure; Inorganic membrane

We report the physical characteristics and gas transport properties for a series of pyrolyzed membranes derived from an intrinsically microporous polyimide containing spiro-centers (PIM-6FDA-OH) by step-wise heat treatment to 440, 530, 600, 630 and 800°C, respectively. At 440°C, the PIM-6FDA-OH was...