DDBSP-UNIFAC is a low-cost stand-alone package that allows to estimate activity coefficients, excess enthalpies and excess heat capacities using UNIFAC and mod. UNIFAC for systems with up to 50 components.
It contains UNIFAC and mod. UNIFAC group fragmentations for XXX components as well as the latest published UNIFAC and mod. UNIFAC parameters. For members of the
UNIFAC Consortium, a much larger and improved set of parameters is available.
Calculation results can easily be printed or copied to the clipboard.
| 2009 | Present Status and Potential of Group Contribution Methods for Process Development | Gmehling J. | Journal | J.Chem.Thermodyn., 41, 7, 731 747 (2009) |
| 2009 | Analysis of a Concept for Predicting Missing Group Interaction Parameters of the UNIFAC Model Using Connectivity Indices | Mohs A., Jakob A., Gmehling J. | Journal | AIChE J., 55, 6, 1614 1625 (2009) |
| 2006 | Further Development of Modified UNIFAC (Dortmund): Revision and Extension 5 | Jakob A., Grensemann H., Lohmann J., Gmehling J. | Journal | Ind.Eng.Chem.Res., 45, 23, 7924 7933 (2006) |
| 2005 | Systems with Ionic Liquids: Measurement of VLE and gamma-infinite Data and Prediction of their Thermodynamic Behavior using Original UNIFAC, mod. UNIFAC(Do) and COSMO-RS(Ol) | Kato R., Gmehling J. | Journal | J.Chem.Thermodyn., 37, 6, 603 619 (2005) |
| 2005 | Performance of a Conductor-Like Screening Model for Real Solvents Model in Comparison to Classical Group Contribution Methods | Grensemann H., Gmehling J. | Journal | Ind.Eng.Chem.Res., 44, 5, 1610 1624 (2005) |
| 2005 | Measurement and Prediction of Vapor-Liquid Equilibria of Ternary Systems containing Ionic Liquids | Doeker M., Gmehling J. | Journal | Fluid Phase Equilib., 227, 2, 255 266 (2005) |
| 2004 | Group Contribution Methods - Ideal Tools for the Development of Chemical Processes | Gmehling J., Ahlers J. | conference paper | Conference, 38, 11, 1 14 (2004) |
| 2003 | Vapor-Liquid Equilibria by UNIFAC Group Contribution. 6. Revision and Extension | Wittig R., Lohmann J., Gmehling J. | Journal | Ind.Eng.Chem.Res., 42, 1, 183 188 (2003) |
| 2003 | Potential of Thermodynamic Tools (Group Contribution Methods, Factual Data Banks) for the Development of Chemical Processes | Gmehling J. | Journal | Fluid Phase Equilib., 210, 2, 161 173 (2003) |
| 2003 | Potential of group contribution methods for the prediction of phase equilibria and excess properties of complex mixtures | Gmehling J. | Journal | Pure Appl.Chem., 75, 7, 875 888 (2003) |
| 2003 | Prediction of Phase Equilibria and Excess Properties for System with Sulfones | Wittig R., Lohmann J., Gmehling J. | Journal | AIChE J., 49, 2, 530 537 (2003) |
| 2002 | Moderne thermodynamische Modelle und Dortmunder Datenbank | Gmehling J. | Journal | Vakuum Forsch.Praxis, 14, 5, 272 279 (2002) |
| 2002 | A Modified UNIFAC (Dortmund) Model. 4. Revision and Extension | Gmehling J., Wittig R., Lohmann J., Joh R. | Journal | Ind.Eng.Chem.Res., 41, 6, 1678 1688 (2002) |
| 2001 | From UNIFAC to Modified UNIFAC (Dortmund) | Lohmann J., Joh R., Gmehling J. | Journal | Ind.Eng.Chem.Res., 40, 3, 957 964 (2001) |
| 2001 | Modified UNIFAC (Dortmund): Reliable Model for the Development of Thermal Separation Processes | Lohmann J., Gmehling J. | Journal | J.Chem.Eng.Japan, 34, 1, 43 54 (2001) |
| 2001 | Vapor-Liquid Equilibria and Enthalpies of Mixing in a Temperature Range from 298.15 to 413.15 K for the Further Development of Modified UNIFAC (Dortmund) | Wittig R., Lohmann J., Joh R., Horstmann S., Gmehling J. | Journal | Ind.Eng.Chem.Res., 40, 24, 5831 5838 (2001) |
| 1999 | Group contribution methods - ideal tools for the synthesis and design of separation processes | Gmehling J. | Journal | Pure Appl.Chem., 71, 6, 939 949 (1999) |
| 1999 | Bedeutung von Stuetzstellen bei tiefen und hohen Temperaturen fuer die Anpassung temperaturabhaengiger Modified UNIFAC (Dortmund) - Parameter | Lohmann J., Gmehling J. | Journal | Chem.Techn.(Leipzig), 51, 4, 184 190 (1999) |
| 1998 | Present status of group-contribution methods for the synthesis and design of chemical processes | Gmehling J. | Journal | Fluid Phase Equilib., 144, 1-2, 37 47 (1998) |
| 1998 | A Modified UNIFAC (Dortmund) Model. 3. Revision and Extension | Gmehling J., Lohmann J., Jakob A., Li J., Joh R. | Journal | Ind.Eng.Chem.Res., 37, 12, 4876 4882 (1998) |
| 1998 | Synthesis of Distillation Processes Using Thermodynamic Models and the Dortmund Data Bank | Gmehling J., Moellmann C. | Journal | Ind.Eng.Chem.Res., 37, 8, 3112 3123 (1998) |
| 1998 | Verbesserung der Vorhersagequalitaet und Erweiterung der Anwendungsgebiete der Gruppenbeitragsmethode Modified UNIFAC (Dortmund) | Lohmann J., Joh R., Nienhaus B., Gmehling J. | Journal | Chem.Ing.Tech., 70, 1-2, 138 142 (1998) |
| 1998 | Prediction of Octanol-Water Partition Coefficients, Henry Coefficients and Water Solubilities Using Unifac | Wienke G., Gmehling J. | Journal | Toxicol.Environ.Chem., 65, 1, 57 86 (1998) |
| 1998 | Revision and Extension of the Group Contribution Method Modified UNIFAC (Dortmund) | Lohmann J., Joh R., Nienhaus B., Gmehling J. | Journal | Chem.Eng.Technol., 21, 3, 245 248 (1998) |
| 1997 | Group Contribution Methods and Dortmund Data Bank - Ideal Tools for the Synthesis and Design of Chemical Processes | Gmehling J., Moellmann C. | conference paper | International Symposium, 142, 21, 161 173 (1997) |
| 1997 | Measurement and Prediction of Ternary Solid-Liquid Equilibria | Joh R., Kreutz J., Gmehling J. | Journal | J.Chem.Eng.Data, 42, 5, 886 889 (1997) |
| 1995 | From UNIFAC to Modified UNIFAC to PSRK with the Help of DDB | Gmehling J. | Journal | Fluid Phase Equilib., 107, 1, 1 29 (1995) |
| 1994 | Phasengleichgewichtsmodelle zur Synthese und Auslegung von Trennprozessen | Gmehling J. | Journal | Chem.Ing.Tech., 66, 6, 792 808 (1994) |
| 1993 | Status and Results of Group Contribution Methods | Gmehling J., Fischer K., Li J., Schiller M. | Journal | Pure Appl.Chem., 65, 5, 919 926 (1993) |
| 1993 | A Modified UNIFAC Model. 2. Present Parameter Matrix and Results for Different Thermodynamic Properties | Gmehling J., Li J., Schiller M. | Journal | Ind.Eng.Chem.Res., 32, 1, 178 193 (1993) |
| 1991 | Einfluss der Datenbasis auf die Resultate von Gruppenbeitragsmethoden | Schiller M., Tiegs D., Gmehling J. | Journal | Chem.Ing.Tech., 63, 11, 1132 1135 (1991) |
| 1991 | Vapor-Liquid Equilibria by UNIFAC Group-Contribution. 5. Revision and Extension | Hansen H.K., Rasmussen P., Fredenslund A., Schiller M., Gmehling J. | Journal | Ind.Eng.Chem.Res., 30, 10, 2352 2355 (1991) |
| 1991 | Development of Thermodynamic Models with a View to the Synthesis and Design of Separation Processes | Gmehling J. | conference paper | Conference, 5, 1, 1 14 (1991) |
| 1990 | A Comparison of the Predictive Capability of Different Group-Contribution Methods | Gmehling J., Tiegs D., Knipp U. | Journal | Fluid Phase Equilib., 54, 11, 147 165 (1990) |
| 1988 | Auswahl und Auslegung thermischer Trennprozesse mit Hilfe von Gruppenbeitragsmethoden | Gmehling J., Tiegs D., Weidlich U. | Journal | Chem.Ing.Tech., 60, 10, 759 768 (1988) |
| 1987 | UNIFAC - ein wichtiges Werkzeug fuer die chemische Industrie | Gmehling J. | conference paper | Software-Entwicklung in der Chemie, 1, 3, 137 151 (1987) |
| 1987 | Vapor-Liquid Equilibria by UNIFAC Group Contribution. 4. Revision and Extension | Tiegs D., Gmehling J., Rasmussen P., Fredenslund A. | Journal | Ind.Eng.Chem.Res., 26, 1, 159 161 (1987) |
| 1987 | A Modified UNIFAC Model. 1. Prediction of VLE, hE, and gamma Infinite | Weidlich U., Gmehling J. | Journal | Ind.Eng.Chem.Res., 26, 7, 1372 1381 (1987) |
| 1986 | Group Contribution Methods for the Estimation of Activity Coefficients | Gmehling J. | Journal | Fluid Phase Equilib., 30, 3, 119 134 (1986) |
| 1986 | Extension of Unifac by Headspace Gas Chromatography. 2. | Weidlich U., Berg J., Gmehling J. | Journal | J.Chem.Eng.Data, 31, 3, 313 317 (1986) |
| 1986 | Results of a Modified UNIFAC Method for Alkane-Alkohol Systems | Weidlich U., Gmehling J. | Journal | Fluid Phase Equilib., 27, 7, 171 180 (1986) |
| 1985 | Extension of UNIFAC by Headspace Gas Chromatography | Weidlich U., Gmehling J. | Journal | J.Chem.Eng.Data, 30, 1, 95 101 (1985) |
| 1984 | Test der modifizierten UNIFAC-Methode zur Vorhersage von Dampf-Flüssig-Gleichgewichten, Aktivitätskoeffizienten bei unendlicher Verdünnung und Exzeßenthalpie-Daten | Rarey J. | interne Berichte | Student Research Project, 55, 12, 1 75 (1984) |
| 1983 | Vapor-Liquid Equilibria by UNIFAC Group-Contribution. Revision and Extension. 3 | Macedo E.A., Weidlich U., Gmehling J., Rasmussen P. | Journal | Ind.Eng.Chem. Process Des.Dev., 22, 4, 676 678 (1983) |
| 1983 | Prediction of Gas Solubilities by a Modified UNIFAC Equation | Nocon G., Weidlich U., Gmehling J., Menke J., Onken U. | Journal | Fluid Phase Equilib., 13, 1, 381 392 (1983) |
| 1983 | Prediction of Gas Solubilities by a Modified UNIFAC-Equation | Nocon G., Weidlich U., Gmehling J., Onken U. | Journal | Ber.Bunsen-Ges.Phys.Chem., 87, 1, 17 23 (1983) |
| 1982 | Flash Points of Flammable Liquid Mixtures Using UNIFAC. | Gmehling J., Rasmussen P. | Journal | Ind.Eng.Chem. Fundam., 21, 2, 186 188 (1982) |
| 1982 | Vapor-Liquid Equilibria by UNIFAC Group Contribution. Revision and Extension. 2 | Gmehling J., Rasmussen P., Fredenslund Aa. | Journal | Ind.Eng.Chem. Process Des.Dev., 21, 1, 118 127 (1982) |
| 1981 | Ein Beitrag zur Thermodynamik der Phasengleichgewichte | Gmehling J. | PhD thesis | Thesis, 258, 2, 1 91 (1981) |
| 1980 | Eine Uebersicht zur Berechnung von Phasengleichgewichten mit Hilfe der UNIFAC-Methode | Gmehling J., Rasmussen P., Fredenslund A. | Journal | Chem.Ing.Tech., 52, 9, 724 734 (1980) |
| 1980 | Abschaetzung des Loesungsmitteleffektes auf die Geschwindigkeit chemischer Reaktionen mit Hilfe der UNIFAC-Methode | Gmehling J., Fellensiek J. | Journal | Z.Phys.Chem.(Muenchen), 122, 4, 251 254 (1980) |
| 1979 | Vapor-Liquid Equilibria by UNIFAC Group Contribution. Revision and Extension | Skjold-Joergensen S., Kolbe B., Gmehling J., Rasmussen P. | Journal | Ind.Eng.Chem. Process Des.Dev., 18, 4, 714 722 (1979) |
| 1979 | Calculation of Activity Coefficients from Structural-Group Contributions | Gmehling J., Onken U. | Journal | Int.Chem.Eng., 19, 4, 566 570 (1979) |
| 1978 | Solid-Liquid Equilibria Using Unifac | Gmehling J.G., Anderson T.F., Prausnitz J.M. | Journal | Ind.Eng.Chem. Fundam., 17, 4, 269 273 (1978) |
| 1977 | Computerized Design of Multicomponent Distillation Columns Using the UNIFAC Group Contribution Method for Calculation of Activity Coefficients | Fredenslund A., Gmehling J., Michelsen M.L., Rasmussen P., Prausnitz J.M. | Journal | Ind.Eng.Chem. Process Des.Dev., 16, 4, 450 462 (1977) |
| 1977 | Berechnung von Aktivitaetskoeffizienten aus Strukturgruppenbeitraegen | Gmehling J., Onken U. | Journal | Ber.Bunsen-Ges.Phys.Chem., 81, 10, 1023 1027 (1977) |
| 1977 | Die Vorausberechnung von Dampf/Fluessigkeits-Gleichgewichten | Onken U., Gmehling J. | Journal | Chem.Ing.Tech., 49, 5, 404 411 (1977) |
| 0 | A Modified UNIFAC Model. Part 1: Model Development, Parameter Fitting Using the Dortmund Data Bank | Tiegs D., Gmehling J. | internal report | Manuscript, 30, 10, 1 2 (0000) |
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