Propane-1,2,3-triphosphonic acid and butane-1,2,3,4-tetraphosphonic acid
作者:W. A. Cilley、D. Allan Nicholson、Daniel Campbell
DOI:10.1021/ja00709a045
日期:1970.3
Convenient method of esterification of polyphosphonic acids
作者:D. Allan Nicholson、W. A. Cilley、Oscar T. Quimby
DOI:10.1021/jo00834a066
日期:1970.9
Silica-Supported Phosphonic Acids as Thermally and Oxidatively Stable Organic Acid Sites
作者:Alexandre Charmot、Andrew Solovyov、Antonio G. DiPasquale、Alexander Katz
DOI:10.1021/acs.chemmater.6b02027
日期:2016.9.13
treated with pyridine at room temperature were strong enough acids to protonate pyridine at room temperature as exhibited by a distinct pyridinium cation band in the infrared spectrum; however, in contrast to much stronger acid sites in silica-supported phosphoric acid materials, almost all adsorbed pyridine was lost by 150 °C. Use of a stronger base for acid-site titration consisting of diisopropylamine