Unusual adsorption mechanism for carboxylic acid gases by polyamine-intercalated α-zirconium phosphate

Journal of Materials Chemistry Pub Date: 2002-08-28 DOI: 10.1039/B201295M

Abstract

The adsorption mechanism of gaseous carboxylic acid by diethylenetriamine- or pentaethylenehexamine-intercalated α-zirconium phosphate was examined in detail using XRD and solid-state 13C and 31P NMR. The adsorption of acetic acid, propanoic acid, and butyric acid resulted in the co-intercalation of the carboxylic acid molecules into polyamine-intercalated α-zirconium phosphate to expand their interlayer distance by 0.64–0.97 nm. In the case of formic acid, its adsorption induced the rearrangement of the polyamine molecules within the interlayer space.

Graphical abstract: Unusual adsorption mechanism for carboxylic acid gases by polyamine-intercalated α-zirconium phosphate
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