Preparation and gas permeation properties of silicon carbide-based inorganic membranes for hydrogen separation

• Published in: Desalination Vol. 193; no. 1; pp. 252 - 255
• Main Authors: Suda, H., Yamauchi, H., Uchimaru, Y., Fujiwara, I., Haraya, K.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 10-05-2006; Elsevier
• Subjects: Applied sciences; Chemical engineering; Exact sciences and technology; Gas permeation; Hydrogen separation; Inorganic membrane; Membrane separation (reverse osmosis, dialysis...); Pollution; Reactors; Silicon carbide; Hydrogen separation; Silicon carbide; Gas permeation; Inorganic membrane; Pyrolysis; Pore structure; Chemical stability; Precursor; Optimization; Gaseous permeation; Membrane separation; Preparation; Permeance; Oxidation; Low temperature
• ISSN: 0011-9164; 1873-4464
• DOI: 10.1016/j.desal.2005.04.143

Silicon carbide (SiC) is one of the promising materials for high-temperature hydrogen separation membranes because of its thermal and chemical stability. It has already been suggested that the pore structure and gas permeation performance of precursor-derived SiC-based inorganic membranes can be tailored by optimization of various factors encountered during and pre/post pyrolysis steps. It was found in this study that addition of polystyrene, appropriate oxidation of the membrane, and low-temperature thermal cross-linking contribute to improved gas permeation performance (H
2 permeance and H
2/N
2 permselectivity).