Structure and Separation Performance of Carbon Membranes from Lignin-based Materials

抄録

Carbon membranes were prepared by pyrolyzing lignocresol derived from wood using high frequency induction heating. The pore structure of the carbon membrane was studied by adsorption measurements and XPS. Gas adsorption measurements indicated that lignin carbon membrane has micropores in the range of 0.6-0.5 nm. C1s peak of XPS spectra of the lignin carbon membranes clearly showed that there are several hydrophilic functional groups, containing oxygen groups, on the surface of the membranes. Gas permeation rates through the membranes were also measured at 35℃. Carbon membranes from lignin-based materials have higher performance than conventional polymer membranes and provide a promising new class of separation membranes.