基于萃余煤的炭膜制备研究

Carbon membrane was prepared by carbonization and activation, which was made from coal residues extracted from carbon disulfide/N-melthyl-2-pyrrolidone (CS2 / NMP) mixed solvent as raw materials, starch as the binder and potassium hydroxide (KOH) as the activating agent by mixing well and compression molding. Carbon membrane was characterized by measuring the porosity, permeability, pore size distribution and surface morphology, and the paper investigated carbonization conditions on the penetration performance. The results show that: carbon membrane has a higher porosity, basically more than 40%; the water permeation rate can reach 1019.5 Lom-2oh-1obar-1; it exists the mesopore and micropore with the average pore size of 3.27 nm and pore size distribution in the 1.4 nm ~ 10 nm.