화학공학소재연구정보센터
Journal of Chemical and Engineering Data, Vol.52, No.6, 2127-2137, 2007
Adsorption of alkanes and aromatic compounds on various faujasites in the henry domain. 2. composition effect in X and Y Zeolites
Volatile organic compounds (VOCs) released in the atmosphere are responsible for important climate changes on earth, and some may have short- and long-term adverse health effects. Recovery of these VOCs can be a solution to reduce pollution. At low pressure, Henry constants are needed to develop recovery processes. Representative molecules were chosen to determine adsorption data. Nine alkanes (linear, cyclic, and branched molecules with carbon numbers between five and eight) and four aromatic and chlorinated compounds on a series of faujasite zeolites (LiLSX, NaLSX, KLSX, NaX, and two NaY) were studied in the Henry domain at temperatures ranging from (448.15 to 673.15) K using the well-known pulse chromatography technique. The zeolites were characterized to determine the main structural properties such as cell parameters, chemical composition, porous volume, specific surface area, and water adsorption capacity. The Henry constant increases with rising Si/Al ratio and probe molecule carbon number.