Qhov tseeb, nws kuj yog ib qho activated carbon, uas yog txawv ntawm carbonaceous adsorbents feem ntau nyob rau hauv qhov micropore inch yog sib npaug faib nyob rau hauv ib qho chaw nqaim, qhov sib npaug ntawm qhov sib npaug yog sib npaug ntawm txoj kab nruab nrab ntawm cov roj molecules yuav tsum sib cais, lub micropores Qhov tshwj xeeb ntawm thaj chaw feem ntau yog rau ntau tshaj 90% ntawm tag nrho cheeb tsam ntawm qhov carbon molecular sieve. Cov txheej txheem pore ntawm carbon molecular sieve yog tau muab faib rau hauv daim ntawv ntawm: daim kab uas hla ntawm qhov macropore yog sib tham nrog cov txheej txheem ntawm cov pa, qhov kev hloov pore yog branched ntawm macropore, thiab micropore yog branched tawm ntawm kev hloov pore. Nyob hauv txoj kev sib cais, macropores ua lub luag haujlwm ntawm txoj kev thauj, micropores ua si ntawm molecular sieve.
Cov kev carbonbonous carbonaceous txoj kev, roj ua kom txoj, cov txheej txheem carbon thiab cov txheej txheem impregnation yog siv los tsim carbon molecular sieve ntawm thee. Ntawm lawv, cov txheej txheem carbonization yog qhov nyuaj, tiam sis ntau txoj kev yuav tsum tau siv nrog ua ke kom muaj cov roj carbon suab thaj zoo zoo.
Cov tshuaj carbon monoxide sieves tau ua tiav hauv thaj chaw ntawm kev sib cais ntawm huab cua vim tsim nitrogen thiab muaj sab nrauv rau lwm cov roj cais.