ABSTRACT
Carbon membranes are a promising candidate for energy-efficient gas separation. This chapter describes carbon membrane preparation from precursor materials, carbonization, and upscaling of both self-supported and supported carbon membranes. The key steps, including precursor selection, tuning the carbon membrane structure, and regeneration, are discussed in detail. Supported carbon membranes have the potential to be used for high-temperature and high-pressure applications, while asymmetric carbon hollow fiber membranes without complex pretreatment should be pursued to bring down the production cost. The main challenges of supported carbon membranes are their lower packing density and relatively high production cost compared with self-supported carbon hollow fiber membranes. Moreover, membrane regeneration should be taken into account to maintain performance over the long term.
