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Carbon membranes have been extensively applied in gas separation field, and the cost and performance of membranes strongly rely on the properties of the substrate material. In this study, effective nanoporous carbon membranes were prepared by pencil coating of the macroporous ceramics, followed by carbonization treatment of polyfurfuryl alcohol (PFA) coated on the pencil-modified ceramics substrates...
Carbon membranes have attracted extensive attention because of their outstanding performance and excellent stability in the separation of gases, particularly of those with molecular sizes close to that of the membrane pores. However, they suffer from problems such as difficulty in fabrication, low permeability and poor physical strength, which greatly limit their industrial applications. These problems...
A TiO2 sol was prepared from tetrabutyltitanate using polyethylene glycol as a stabilizer, and this was homogeneously mixed with polyfurfuryl alcohol, dip-coated on a porous Al2O3 substrate and carbonized at 700°C for 4h to produce TiO2-doped carbon membranes. SEM, TEM, XRD and granulometry were used to characterize the membranes, and their permeation performance for CO2, N2 and CH4 were tested. It...
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