Quantitative ³¹P NMR data for carboxylic and total acid number determination in fast-pyrolysis bio-oil

Quantitative ³¹P NMR data for acidity determination in fast-pyrolysis bio-oil Sample: pine wood fast-pyrolysis oil, 500 °C, supplied by VTT, 19–21 wt% water, stored at −18 °C. Instrument: Bruker Avance III, 500 MHz (¹H) / 202.47 MHz (³¹P), 5 mm broadband probe, 298 K. Acquisition: zgig, 90° pulse 24.79 µs, D1 = 10 s, 4 dummy scans, AQ 1.63 s, SW 99.6 ppm centred 140 ppm, TD 65536. NS = 64 unless stated. Integration windows: 134–138 ppm carboxylic OH, 138–145 ppm phenolic OH, 145–152 ppm aliphatic OH. Internal standard e-HNDI ~152 ppm. Referenced to phosphitylated water at 132.2 ppm. Folder contents:01_NS_series02_ageing_with_without_Cracac303_sample_mass04_model_compounds05_spike_recovery06_integrals All values are single determinations. See the associated publication for full experimental detail.