Figure 5. An expanded region in the 2200 to 1350 cm^–1 of the FTIR spectra of 1-naphthol-sorbed whole K-SWy-2 (dotted lines) vs. carbonate-free K-SWy-2 (solid lines). Increased band intensity present as a broad spectral component under the 1701, 1636 and 1531 cm^–1 bands is attributed to the transformation product(s) of 1-naphthol.