Ceramic Membranes for Hydrogen Production from Coal.

Gavalas, G. R.

Technical Information Center Oak Ridge Tennessee

关键词: Hydrogen production;    Coal;    Membrane pore;    Ceramics;    Separation processes;   

RP-ID  :  DE2004822136

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

A technique was developed to extrude thin glass tubes from a glass-polyethersulfone-solvent (NMP) paste with a glass to polymer weight ratio of about 8. The extrudates were gelled in water and heat treated at 800-950 degrees Celsius to remove the polymer and sinter the particles to a dense glass structure. Subsequently, the tubes were leached in hot water to remove the soluble phase formed by phase separation during cooling. The tubes were characterized by XRD, SEM, and permeation measurements. SEM examination indicated that during leaching the glass developed pores of about 100 nm size. Permeation measurements showed lack of separation selectivity consistent with the pore size observed in SEM.