Abstract
Field ionisation mass spectrometric (FIMS) analysis of 15 resid samples, taken from three sampling points in five close-coupled two-stage liquefaction runs at the Wilsonville facility, was performed to help understand how coal characteristics and/or variations in process configuration impact resid reactivity. Despite general similarity in overall profiles, FIMS analysis of these rather similar samples nevertheless showed significant differences. Most spectral profiles appeared as if they resulted from the superposition of two curves, with intensities peaking at about 350 and 600 Da. To quantify the differences in the spectra, we mathematically deconvoluted the profiles into lumped components A and B
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