Adsorption of Sulfur Dioxide in Gaseous Phase on the Porous m-Aminophenol Condensation Resinst

1 January 1972

journal article
Published by The Chemical Society of Japan in NIPPON KAGAKU KAISHI

Vol. 1972 (1) , 179-184
https://doi.org/10.1246/nikkashi.1972.179

Abstract

Adsorption equilibrium of sulfur dioxide on the m-aminophenol resins with various pore structures was measured gravimetrically at the temperature range of 20∼60°C and equilibrium pressure up to 760 mmHg. Heats of adsorption were estimated as 14 to 15 kcal/mol using Clausius-Clapeyron equation. Apparent activation energy of adsorption of sulfur dioxide was calculated as 1 kcal/mol from Arrhenius plot. Adsorption capacity of the resins for sulfur dioxide was measured dynamically, by circulating sulfur dioxide (1.77% in N₂) over the resins at the flow velocity of 76 cm/min at ambient temperature and pressure, and was compared with that of macroreticular and gel type quaternary ammonium anion-exchange resins in the R-OH form. The adsorption capacity of highly porous resins for sulfur dioxide was 29 to 30 ml-STP/g-dry resin. Adsorption reached nearly equilibrium over the porous resin with ten minutes.

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