CH4/N2 Adsorption-Separation Performance of Activated Carbons Treated by Stepwise Modification Using Sodium Dodecyl Sulfate and Sulfuric Acid
Adsorption-based gas separation is recognized as a promising and efficient method for the purification of low-concentration coalbed methane (LCCBM). However, the performance of activated carbons (AC) is limited by their strong surface hydrophobicity and the micropore blockage of mineral ashes. Conventional acid modif...