Partition coefficients of baicalin in EOPO/potassium phosphate aqueous two phases system combined with temperature induced phase separation were measured.The effects on partition coefficients of salt addition,EOPO and...Partition coefficients of baicalin in EOPO/potassium phosphate aqueous two phases system combined with temperature induced phase separation were measured.The effects on partition coefficients of salt addition,EOPO and potassium phosphate concentration were investigated.A method for baicalin extraction from Scutellaria baicalensis Georgi is proposed by using aqueous two phases extraction combined with temperature induced phase separation.展开更多
The VLE data for binary systems of N-methylpiperazine-piperazine and water-N- methylpiperazine were measured at pressure of 0.1013 MPa by using an improved Rose still.The experimental data of the systems were tested f...The VLE data for binary systems of N-methylpiperazine-piperazine and water-N- methylpiperazine were measured at pressure of 0.1013 MPa by using an improved Rose still.The experimental data of the systems were tested for thermodynamic consistency and correlated satisfactorily with Wilson equation.The critical properties,pc,Tc,V_c,and acentric factors,ω,of both N-methylpiperazine and piperazine have been estimated by group contribution method.The UNIFAC model was successfully used to correlate and predict VLE data of N-methylpiperazine-piperazine system．展开更多
New correlations were proposed for the prediction of the binary diffusion coefficients ofliquid and solid solutes in supercritical solvents. The input data required for the correlations aretemptrature, density, solute...New correlations were proposed for the prediction of the binary diffusion coefficients ofliquid and solid solutes in supercritical solvents. The input data required for the correlations aretemptrature, density, solutendolecular weight, the solute group contributions, and the solvent basicproperties (molecular weight, critical volume, and critical pressure). The results are satisfactory.展开更多
文摘Partition coefficients of baicalin in EOPO/potassium phosphate aqueous two phases system combined with temperature induced phase separation were measured.The effects on partition coefficients of salt addition,EOPO and potassium phosphate concentration were investigated.A method for baicalin extraction from Scutellaria baicalensis Georgi is proposed by using aqueous two phases extraction combined with temperature induced phase separation.
文摘The VLE data for binary systems of N-methylpiperazine-piperazine and water-N- methylpiperazine were measured at pressure of 0.1013 MPa by using an improved Rose still.The experimental data of the systems were tested for thermodynamic consistency and correlated satisfactorily with Wilson equation.The critical properties,pc,Tc,V_c,and acentric factors,ω,of both N-methylpiperazine and piperazine have been estimated by group contribution method.The UNIFAC model was successfully used to correlate and predict VLE data of N-methylpiperazine-piperazine system．
文摘New correlations were proposed for the prediction of the binary diffusion coefficients ofliquid and solid solutes in supercritical solvents. The input data required for the correlations aretemptrature, density, solutendolecular weight, the solute group contributions, and the solvent basicproperties (molecular weight, critical volume, and critical pressure). The results are satisfactory.
