| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1231072 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2016 | 9 Pages |
•The microheterogeneity in aqueous ammonia was observed by Raman spectroscopy.•The structures of aqueous ammonia solutions of KCl and NH4Cl were proposed.•Dissolving behaviors of KCl and NH4Cl were interpreted from solution structures.
The aqueous ammonia (5%–15%) and its KCl and NH4Cl solutions have been studied by Raman spectroscopy and X-ray scattering. The microscopic structures in these solutions were proposed. The addition of KCl reinforced the hydrogen bond between NH3 and H2O. On contrary, NH4Cl destroyed this interaction by forming hydrogen bond NH4+–NH3. This study gave an interpretation of the different dissolving behavior of KCl and NH4Cl in aqueous ammonia, which may have important implications in the separation of potassium and ammonium salt during the industrial production.
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