Phosphorus characterizing compounds, vibrational

Following Section 11. J, which reported some characteristic vibrational and NMR data representing phosphorus-based reference compounds (Tables VI-Vlll), it is interesting to propose similar compilations concerning phosphorus-containing alumina catalysts in the dried and calcined forms. These vibrational and NMR data (Tables IX-XII) are more informative in characterizing hydrotreating catalysts than are XRD data because the catalysts are amorphous. 

---