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Mechanism of CO32- substitution in carbonate-fluorapatite: Evidence from FTIR spectroscopy, 13C NMR, and quantum mechanical calculations---Reply to Nathan
Mechanism CO32- substitution carbonate-fluorapatite Evidence FTIR spectroscopy 13C NMR quantum mechanical calculations---Reply Nathan
2012/4/5
In the critical comment byNathan (1996), the author essentially claims that the samples used in our study (Regnier et al. 1994) werenot very appropriate to dem-onstrate the absence of C03P-. Furthermo...
Mechanism of CO32- substitution in carbonate-fluorapatite: Evidence from FTIR spectroscopy, 13C NMR, and quantum mechanical calculations---Discussion
Mechanism CO32- substitution carbonate-fluorapatite Evidence FTIR spectroscopy 13C NMR quantum mechanical calculations---Discussion
2012/4/5
The carbonate substitution in apatite continues to pro-voke controversies. In a recent paper, Regnier etal. (1994) challenged the existence of the hypothetical C03P- ion in carbonate-fluorapatite (fra...
13C CPMAS Nuclear Magnetic Resonance Study of the Adsorption of 2-Phenethylamine on Clays
Amine reactions with clays Clay acidic sites Solid state NMR
2011/12/1
Abstract: 2-Phenethylamine 13C-enriched in the beta position was adsorbed on four different aluminum-exchanged days: hectorite, Barasym, Laponite RD, and lithium taeniolite. The sites for adsorption w...
Chemisorption of Benzene on Cu-Montmorillonite as Characterized by FTIR and 13C MAS NMR
Benzene chemisorption 13C MAS NMR Cu-montmorillonite FTIR Poly-p-phenylene
2011/12/1
Abstract: Sorption of benzene onto Cu-montmorillonite was characterized by Fourier transform infrared (FTIR) spectroscopy and 13C magic angle spinning nuclear magnetic resonance (MAS NMR). Under anhyd...
Interpretation of Solid State 13C and 29Si Nuclear Magnetic Resonance Spectra of Kaolinite Intercalates
Dimethylsulfoxide Formamide Hydrazine Intercalate Nuclear magnetic resonance Ordering Pyridine-N-oxide
2012/1/13
13C and 29Si nuclear magnetic resonance spectroscopy with magic-angle spinning bas been used to study the short-range ordering and bonding in the structures of intercalates of kaolinite with formamide...