Adsorption of Alkanes and Aromatic Compounds on Various Faujasites in the Henry Domain. 2. Composition Effect in X and Y Zeolites

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• 作者：Xavier Canet ; Frederic Gilles ; Bao-Lian Su ; Guy de Weireld ; Marc Frè ; re ; Pascal Mougin
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2007
• 出版时间：November 2007
• 年：2007
• 卷：52
• 期：6
• 页码：2127 - 2137
• 全文大小：114K
• 年卷期：v.52,no.6(November 2007)
• ISSN：1520-5134

文摘

Volatile organic compounds (VOCs) released in the atmosphere are responsible for important climate changes onearth, and some may have short- and long-term adverse health effects. Recovery of these VOCs can be a solutionto reduce pollution. At low pressure, Henry constants are needed to develop recovery processes. Representativemolecules were chosen to determine adsorption data. Nine alkanes (linear, cyclic, and branched molecules withcarbon numbers between five and eight) and four aromatic and chlorinated compounds on a series of faujasitezeolites (LiLSX, NaLSX, KLSX, NaX, and two NaY) were studied in the Henry domain at temperatures rangingfrom (448.15 to 673.15) K using the well-known pulse chromatography technique. The zeolites were characterizedto determine the main structural properties such as cell parameters, chemical composition, porous volume, specificsurface area, and water adsorption capacity. The Henry constant increases with rising Si/Al ratio and probe moleculecarbon number.