Bromine-loaded carbon adsorbent and preparation method and application thereof

The invention discloses a bromine-loaded carbon adsorbent and a preparation method and application thereof, and the bromine-loaded carbon adsorbent is a N2 adsorption inhibition carbon based porous adsorption material with the surface deposited with bromine groups by vapor. The preparation method is as follows: untreated raw activated carbon is flatly laid in a porcelain boat, the porcelain boat is put into a high temperature tube furnace hearth temperature control zone; a mass flow controller is adjusted to obtain 3-20ml / min of N2, bromine vapor is blew out by a bromine vapor generating bottle filled with liquid bromine, under the atmosphere of the bromine vapor, activated carbon is heated at fixed point to 300 DEG C, and homoiothermy is performed for 5 hours; a sample is taken out, placed in a fume hood, and naturally cooled until the quality change rate is less than 0.5% / h to obtain the bromine vapor deposited activated carbon product. The bromine-loaded carbon adsorbent can improve the CH4 / N2separation coefficient of activated carbon.