基于固体核磁共振技术的固体酸结构、酸性及活性分析

杨文杰,黄骏

Analysis of Local Structure, Acidic Property and Activity of Solid Acids by Solid-State Nuclear Magnetic Resonance Spectroscopy

Wen-jie YANG,Jun HUANG

表3 用于固体酸酸性特性表征的探针分子a

Table 3 Probe molecules for solid acid acidity characterizationa

Probe molecule MAS NMR technique Type Strength Density Accessibility B L B L B L Trimethylphosphine (TMP) 31P √ √ √ √ √ √ √ Acetone-2-13C ((CH3)213CO) 13C √ √ √ ❌ ❌ Ammonia (NH3) 1H √ √ ❌ ❌ √ √ Pyridine-d5 (C5D5N) 1H √ ❌ √ ❌ ❌ √ 15N-pyridine 15N √ √ √ √ √ √ √ Trialkylphosphine oxides (R3PO) 31P √ √ √ √ √ √ Deuterated acetonitrile (CD3CN) 1H √ ❌ √ ❌ √ ❌ Perfluorotributylamine 1H √ ❌ ❌ ❌ ❌ √