Methane Adsorption Study Using Activated Carbon Fiber and Coal Based Activated Carbon

摘要

Influence of ammonium salt treatment and alkali treatment of the coal based activated carbon(AC)and activated carbon fiber(ACF)adsorbents on methane adsorption capacity was studied via high-pressure adsorption experiment.Surface functional groups and pore structure of two types of adsorbents were characterized by the application of infrared absorption spectroscopy(IR)and low temperature liquid nitrogen adsorption method.The results show that both ammonium salt treatment and alkali treatment have obvious effect on changing BET,pore volume as well as pore size distribution of adsorbents;and methane adsorption capacity of the activated carbon fiber is the maximum after the ammonium salt treatment.