Determination of hydroxyl-containing compounds in synthetic fuels by silicon-29 nuclear magnetic resonance spectrometry

Qualitative and Quantitative Functional Determination in Bitumen Acidic Fractions by 29Si NMR Spectroscopy. Correlation with Bitumen Aging

“…Several spectroscopic evidences have been given by numerous techniques to characterize heteroatom functionalities: FT-IR 15,24 and NMR spectroscopy, especially proton 25 or carbon. 13,26 Some authors proposed the derivatization of petroleum fractions as phosphorylated, 26 trimethylfluorinated, [27][28][29] or trimethylsilylated 26,27,29,30 compounds and their subsequent examination by NMR spectroscopies.…”

Characterization of phenols from coal liquefaction products by tin-119 nuclear magnetic resonance spectrometry

“…The NMR analyses of acetylated phenols (12) and trimethylsilyl derivatives of model phenols (13) have also been used for isomer analysis of phenols and characterization of hydroxyl groups in coal liquefaction oils. The 19F NMR analyses of hexafluoroacetone adducts (14-16) or trifluoroacetyl derivatives (17)(18)(19)(20) and ^Si NMR (21) have been described for the hydroxyl content analysis in synthetic fuels and isomer analysis of phenols.…”