Experimental observations of water-framework interactions in a hydrated microporous aluminium phosphate

Article Abstract:

Differential scanning calorimetry of the hydrated, microporous aluminium phosphate AIPO-14 shows two distinct water losses between the room temperature and 120 degree Celsius, indicating the presence of two types of water in the solid. It was found that two O-H stretching modes for bound water in hydrated AIPO-14, could be detected, consistent with the model of two types of water present in the material with the loosely bound water connected to neighboring water molecules by intermolecular hydrogen bonds.

Science & research, Aluminum Compounds, Research, Phosphates, Chemistry, Physical and theoretical, Physical chemistry, Chemical reactions, Chemical properties

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Satellite transition MAS MNR of low-gamma nuclei at natural abundance: sensitivity practical implementation, and application to (super 39)K (I=3/2) and (super 25)Mg (I=5/2)

Article Abstract:

Satellite transition magic angle spinning (STMAS) technique is very important for the study of low-gamma nuclei is shown using numerical calculations and preliminary (super 39)K and (super 25)Mg NMR experiments. Supposedly, the first high-resolution (super 25)Mg NMR spectra, at natural abundance are presented.

Potassium & Sodium Compounds, Potassium & Compounds, Observations, Nuclear magnetic resonance, Magnesium, Magnesium (Metal), Potassium compounds

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