fig6
From: High-silica KFI zeolite: highly efficient synthesis and catalysis in methanol amination reaction
![High-silica KFI zeolite: highly efficient synthesis and catalysis in methanol amination reaction](https://image.oaes.cc/b353c91d-8eb6-419d-aee8-1d869693a2f4/cs3058.fig.6.jpg)
Figure 6. UV-Vis adsorption spectra of (Na+)CCH, (Cs+)CCH, NH3·H2O and 18-crown-6 (aq) mixture, and 18-crown-6 aqueous solution (5.7 mol·L-1), and the inserted photographs for the mixtures of 18-crown-6 (5.7 mol·L-1) aqueous solutions with NaOH, CsOH, and