“…Nevertheless, the obtained numerical data suggest that the particle-to-fluid mass transfer coefficients for the supercritical hydrogenation of sunflower oil lie within the values for a gas (Ranz and Marshall, 1952) and a liquid (Brunner, 1985), which is coherent with the definition of a supercritical fluid. Furthermore, the obtained values remain in the magnitude order of those predicted by means of the correlations proposed by Tan et al (1988) for external mass transfer in a supercritical extractor.…”