ADSORPTION OF BTX ON MSC IN SUPERCRITICAL CO_2, A CHROMATOGRAPHIC STUDY

摘要

Chromatographic measurements were made for the adsorption of benzene, toluene and m-xylene on molecular sieving carbon (MSC) in supercritical fluid CO_2 mixed with organics. Supercritical chromatograph packed with MSC was used to detect pulse responses of organics. Adsorption equilibria and adsorption dynamics for organics were obtained by moment analysis of the response peaks. Dependences of adsorption equilibrium constants, K~*, and micropore diffusivity, D, on amount adsorbed were examined.