Acidity of Solid and Liquid Acids Probed by P-31 NMR Chemical Shifts of Phosphine Oxides

Journal: Journal of Analytical Science and Technology (JAST) (Vol.2, No. 3)

Publication Date: 2011-12-15

Authors : Chih-Yi Yang Chih-Chung Chang Ningdong Feng Shing-Jong Huang Anmin Zheng Yu-Chi Chang Kuei-Chi Lee Feng Deng Shang-Bin Liu;

Page : A155-A158

Keywords : Acidity; Acid Catalyst; P NMR; Chemical Shift; Phosphine Oxides;

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Abstract

A novel method for acidity characterization of solid and liquid acids is proposed. Surpassing conventional methods, this technique employs P nuclear magnetic resonance (NMR) of adsorbed phosphine oxides is capable of monitoring a wide range of acidic strengths from weak to super acids with superior sensitivity.

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Acidity of Solid and Liquid Acids Probed by P-31 NMR Chemical Shifts of Phosphine Oxides

Abstract

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