Thermodynamic Modeling of Solubilities of Metal Precursors in Supercritical Carbon Dioxide for Efficient Preparations of Supported Catalysts

Abstract

This article reviews the thermodynamic modeling of solubilities of metal precursors in supercritical carbon dioxide for efficient preparations of supported catalysts using the PC-SAFT (perturbed chain-statistical associating fluid theory) equation of state. In this work, solubility data of acetylacetonate-type metal precursors were correlated using the PC-SAFT equation of state, then pure component parameters of the PC-SAFT (segment number, segment diameter, and dispersion energy) were obtained. The pure component PC-SAFT parameters depended strongly on the physical properties of the metal precursors, which could be generalized based on the physical meanings of the parameters. The generalized pure component parameters could predict the solubilities to within 30% average relative deviation under almost all conditions investigated.