Improving the Analysis of Phase-Separated Bio-Fuel Samples with Slice-Selective Total Correlation NMR Spectroscopy
Description
NMR data supporting "Improving the Analysis of Phase-Separated Bio-Fuel Samples with Slice-Selective Total Correlation NMR Spectroscopy". ABSTRACT: Pyrolysis oil has been identified as a possible alternative fuel source, however widespread use is hindered by high acidity and water content. These negative characteristics can be mitigated by blending with, for example, mixtures of biodiesel, marine gas oil and butanol. These blended biofuel samples can be unstable and often separate into two distinct phases. Analysis of how the components of any blended biofuel samples partition between the two layers is an important step towards understanding the separation process and may provide insight into mitigating the problem. Slice-selective NMR, where the NMR spectrum of only a thin slice of the total sample is acquired, has been previously used to study, non-invasively, bio-oil samples. Here, the technique is extended and improved, with slice-selective two-dimensional correlation experiments used to resolve the distinct chemical spectra of the various components of the phase-separated blended fuel mixtures. CONTENTS Data organised by samples. Sample A - zg, two slice-selective 1D, 2D TOCSY Sample B - zg, two slice-selective 1D, two slice-selective 2D TOCSY Sample C - zg, two slice-selective 1D, two slice-selective 2D TOCSY Sample D - zg, two (near-identical) slice-selective 1D, 2D TOCSY Sample E - zg, 2D TOCSY Sample F - zg, 2D TOCSY
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