Adsorption kinetics of rhodium (III) acetylacetonate onto mesoporous silica adsorbents in the presence of supercritical carbon dioxide

Review—Supercritical Deposition: A Powerful Technique for Synthesis of Functional Materials for Electrochemical Energy Conversion and Storage

“…45 In the case of supports with high surface areas, it has been shown that the kinetics of adsorption of a metal precursor from scCO 2 can be modeled based on diffusion inside the pore volume by assuming local adsorption equilibrium between the metal precursor and support at the surface. 39,40,43,46 The measurement and analysis of adsorption behavior in the presence of co-solvents requires caution. 47 Reported equilibrium concentration needs to be confirmed by assuring the presence of one single fluid phase.…”

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

“…(3)) determined by additional fitting to the solubility data for Cr(acac) 3 (■), Fe(acac) 3 (▲), Cu(acac) 2 (◆), Rh(acac) 3 (), Pd(acac) 2 (•), and Pt(acac) 2 (★) using the PC SAFT approach at each temperature following the correlations with m prec , s prec , and e prec as fitting parameters and k ij ＝0 in Eq. (6). Reprinted from Ref.…”

“…Cr(acac) 3 1) ARD values for correlations of the solubility data using m prec , s prec , and e prec as fitting parameters with k ij ＝0 in Eq. (6). 2) ARD values for additional fitting using k ij in Eq.…”

“…2) ARD values for additional fitting using k ij in Eq. (6) at each temperature after the correlations for m prec , s prec , and e prec as fitting parameters with k ij ＝0 in Eq. (6).…”

“…(Color online) Calculated Cr(acac) 3 solubilities in scCO 2 obtained using the PC SAFT approach (dashed lines: correlations using m prec , s prec , and e prec with k ij ＝0 in Eq (6)…”