Sj. Chen et al., MASS-SPECTROMETER COMPOSITION PROBE FOR BATCH CELL STUDIES OF SUPERCRITICAL FLUID PHASE-EQUILIBRIA, Journal of chemical and engineering data, 38(2), 1993, pp. 211-216
A batch cell coupled with a mass spectrometer (MS) composition probe i
s demonstrated for the first time for measuring high-pressure fluid-ph
ase equilibria at temperatures up to 200-degrees-C and pressures up to
600 bar. Compared to gas chromatography (GC), this MS composition pro
be requires a much smaller sample that is taken from the cell into the
spectrometer. Its application is illustrated for 1-butene + ethylene.
The apparatus is also tested on two additional systems, supercritical
carbon dioxide + decane and supercritical propane + polyisobutene.