Sunday, 30 August 2026
Annual Meeting of the IUPAC Subcommittee on Solubility and Equilibrium Data
Monday, 31st August
| 8:30 – 17:00 | Registration |
| Opening session | Chairperson: Prof. Radostina Stoyanova | |
| 9:00 – 9:45 | Opening Ceremony |
| 9:45 – 10:00 | IUPAC Representative |
| Clara Magalhães | |
| 10:00 - 10:45 | PL1 M. Steiger |
| Crystallization in confinement: Solubility issues in the conservation of cultural heritage | |
| 10:45 - 11:15 | Coffee break |
Session 1: Solubility Phenomena - theories, experimental and analytics
Chairperson: Prof. Clara Magalhães
| 11:15 - 11:30 | OP1 C. Bretti |
| R.A.L.S. Santos, C. Bretti, M.C.F. Magalhães, C.M.P.G. Amorim, D. Milea and D.C. G.A. Pinto, Study on the coordination of N-hydroxyamides with iron(II) and iron(III) | |
| 11:30 - 11:45 | OP2 Nese Cevirim-Papaioannou |
| N. Cevirim-Papaioannou, P. Q. Fürst, F. E. Furcas, K. Dardenne, T. Prüßmann, J. Rothe, M. Altmaier, X. Gaona, Stability and solubility of Fe(II)-CO3 phases | |
| 11:45 - 12:00 | OP3 Ivayla Pantcheva |
| Ivayla Pantcheva, Solution behaviour of Ni(II) mixed-ligand complexes containing polyether ionophore and glycine | |
| 12:00 - 12:15 | OP4 Andrija Vukov |
| A. Vukov, B. Šarac, D. Goste, S. Papović, T.T. Borović, S. Belić, S. Gadžurić, M. Vraneš, Micellization behavior of newly synthesized surfactant nicotine-based ionic liquids | |
| 12:15 - 14:00 | Lunch time |
Session 2: Solubility Phenomena - theories, experimental and analytics
Chairperson: Prof. Silvana Mattedi
| 14:00 - 14:15 | OP5 Yordan Georgiev |
| Phytochemical composition and in vitro inhibitory activity of herbal extracts against medically relevant enzymatic biological systems | |
| 14:15 - 14:30 | OP6 Glenn Hefter |
| G. Hefter, J. Hunger, R. Buchner, Dielectric Spectroscopy and the ‘Wicked’ Problem of Electrolyte Solubilities | |
| 14:30 - 14:45 | OP7 Paul Fürst |
| P. Q. Fürst, N. Cevirim-Papaioannou, X. Gaona, S. Hagemann, M. Altmaier, H. Geckeis, Solubility, Speciation, and Thermodynamic Modeling of Fe(II) in Repository-Relevant Systems from Near Neutral to Hyperalkaline Conditions | |
| 14:45 - 15:00 | OP8 Earle Waghorne |
| W. Earle Waghorne, Solvent Parameters from Computational Chemistry | |
| 15:00 - 15:30 | Coffee break |
Session 3: Advances in Computational Modeling
Chairperson: Prof. Wolfgang Voigt
| 15:30 - 16:15 | PL2 José Palomar |
| J. Palomar, P. Navarro, J. Lemus, A. Belinchón, A. Pereira, S. Moreno, S. Delgado, Using computational modelling to explore thermodynamic challenges in chemical process development | |
| 16:15 - 16:30 | OP9 Christian Kiefer |
| C. Kiefer, D. Fellhauer, M. Altmaier, X. Gaona, Thermodynamic Reference Database (THEREDA): Pitzer Activity Model for Tc(IV) Solubility and Complexation in the Tc(IV)–Na+–Cl−–HCO3−–CO32−–OH−–H2O(l) System | |
| 16:30 - 16:45 | OP10 Jiangping Liu |
| J. Liu, N. Kovalenko, G. Das, A. Anderko, Thermodynamic Modeling of Rare Earth Solvent Extraction | |
| 16:45 - 17:00 | OP11 Miriam Guimarães |
| M. D. Guimarães, S. F. M. Costa, D. O. Abranches, A. M. Ferreira, J. A. P. Coutinho, S. P. Pinho, O. Ferreira, M. A. R. Martins, Integrated computational and experimental screening of solvents for polylactic acid recycling | |
| Poster Session 1 | Chairperson: Prof. Diana Rabadjieva | |
| 17:15 - 17:30 | Flash oral presentation - P9, P16, P17, P18, P19 |
| 17:30 – 20:30 | POSTER SESSION 1 / Welcome drink |
Tuesday, 1st September
Session 4: Solubility Phenomena in Pharmaceuticals and Biological Systems
Chairperson: Prof. Demetrio Milea
| 9:00 - 9:45 | PL3 Zahari Vinarov |
| Z. Vinarov, The role of solubility and solubilization in pharmacy: from drug discovery to drug development | |
| 9:45 - 10:00 | OP12 Tatjana Verbić |
| T. Verbić, A. Serajuddin, A. Avdeef, M. Kuentz, Understanding Drug Salt Solubility: Mechanistic Complexities and Practical Approaches | |
| 10:00 - 10:15 | OP13 Olivera Marković |
| O. Marković, M. Pešić, A. Avdeef, A. Serajuddin, T. Verbić, Tricyclic antidepressants solubility study: Role of Competing Counterions in Aggregation and Solid-Phase Transformations | |
| 10:15 - 10:30 | OP14 Mónia Martins |
| L. B. Corso, I. W. Cordova, I. Morais, F. Nogueira, A. C. S. Pais, S. A. O. Santos, J. A. P. Coutinho, A. Zuber, O. Ferreira, S. P. Pinho, M. A. R. Martins, Green chemistry solutions for antimalarial drug extraction and solubility enhancement | |
| 10:30 - 11:00 | Coffee break |
Session 5: Solubility Phenomena in Pharmaceuticals and Biological Systems
Chairperson: Assoc. Prof. Zahari Vinarov
| 11:00 - 11:15 | OP15 Silvana Mattedi |
| R. Simões, G. Teixeira, A.C.M. Silva, A.S. Lima, S. Mattedi, Menadione’s solubility in fatty acids predicted by the COSMO-SAC CS25 model | |
| 11:15 - 11:30 | OP16 Viktoriya Smilkova |
| Isolation, chemical characterization and modification with ferric ions of natural prebiotic herbal polysaccharides | |
| 11:30 - 11:45 | OP17 Simão Pinho |
| S. P. Pinho, P. C. Hamasaki, C. A. Piske, O. Ferreira, M. A. R. Martins, D. O. Abranches, J. A. P. Coutinho, Salt Effects on Amino Acid Solubility: Experimental, Molecular, and Data-Driven Perspectives | |
| 11:45 – 12:00 | SP1 Milen Kadijski, Aurubis AD, Company presentation |
| 12:00 - 12:15 | SP2 Todor Todorov, AQUACHIM, Company presentation |
| 12:15 - 12:30 | Official Conference Group Photo |
| 12:30 – 14:00 | Lunch time |
| 14:15 | Conference tour |
Wednesday, 2nd September
Session 6: Solubility Phenomena in the Environment
Chairperson: Assoc. Prof. Pedro Carvalho
| 9:00 - 9:45 | PL4 Vera Slaveykova |
| Vera I. Slaveykova, Inès Segovia-Campos, Arin Kantarciyan, Rocco Gasco, Arturo A. Keller, Solubility at the Nanoscale: Environmental Fate and Impact of Engineered Nanomaterials | |
| 9:45 - 10:00 | OP18 Anastasiia Kuzenkova |
| A. Kuzenkova, T. Plakhova, A. Romanchuk, S. Kalmykov, How cation composition controls the structure and solubility of Pu(V) and Np(V) double carbonates | |
| 10:00 - 10:15 | OP19 A. Kovacheva |
| A. Kovacheva, D. Rabadjieva, Chemical equilibrium models for calculation of metal chemical species in different type surface waters | |
| 10:15 - 10:45 | Coffee break |
Session 7: Solubility Phenomena in Industrial Applications
Chairperson: Prof. José Palomar
| 10:45 - 11:30 | PL5 Wolfgang Voigt |
| W. Voigt, Lithium recovery for batteries from primary and secondary sources | |
| 11:30 - 11:45 | OP20 Bence Kutus |
| E. Hajdú, B. Kutus, Synthesis of lithium hydroxide using barium hydroxide | |
| 11:45 - 12:00 | OP21 Inês C. M. Vaz |
| I. C. M. Vaz, M. Bastos, L. M. N. B. F. Santos, J. A. P. Coutinho, N. Schaeffer, Understanding and quantifying the thermodynamics of lanthanide extraction in hydrophobic eutectic solvents | |
| 12:00 - 12:15 | OP22 Lama Mzek |
| L. Mzek, M. Atanassova, Ligand – Diluent Interplay in the Extraction and Separation of Fe(III) ion by β-Dicarbonyl N-Heterocyclic Chelators | |
| 12:15 - 14:00 | Lunch time |
Session 8: Chemical synthesis of nanosized materials
Chairperson: Prof. Svetlana Zheleva
| 14:00 - 14:30 | IL1 María Pascual |
| L.Fernández-Rodríguez, M.Sedano, R. Sánchez, M.Álvarez, M.J.Pascual, Corrosion of borosilicate glasses in molten salts | |
| 14:30 - 15:00 | IL2 Peter K Petrov |
| Ryan Bower, David Owen, Bruno Rente, Ming Fu, Thomas Smith, Arutiun P. Ehiasarian, Rupert Oulton, Peter K Petrov, Nanostructured Titanium Nitride Thin Film Arrays for Photocatalytic Applications | |
| 15:00 - 15:15 | OP23 Ivaylo Tankov |
| I. Tankov, R. Yankova, S. Delibaltova, N. Todorov, R. Nikolova, Catalytic, electronic and spectroscopic properties of imidazolium hydrogen squarate | |
| 15:15 - 15:45 | Coffee break |
| Award Session | Chairperson: Prof. Slobodan Gadžurić | |
| 15:45 - 16:05 | Franzosini Prize |
| OP24 Glenn Hefter- the recipient of the 2026, Solutes, Solvents, Solutions, Solubilities & Stabilities | |
| 16:05 - 16:45 | Balarew Award |
|
OP25 Bence Kutus - the recipient of the 2026, Complexation and precipitation reactions of Ca2+ ions in strongly alkaline media OP26 Mónia Martins - the recipient of the 2025, Solubility without Borders OP27 Lyuben Borislavov - the recipient of the 2025 for Bulgaria, Machine-learning aided metal-ion battery cyclic stability prediction |
|
| Poster Session 2 | Chairperson: Prof. Albena Bachvarova-Nedelcheva | |
| 16:45 – 17:00 | Flash oral presentation - P21, P22, P28, P32, P36 |
| 17:00 - 18:30 | POSTER SESSION 2 |
| 20:00 – 24:00 |
Conference dinner - Restaurant PRINCIPI DI PIEMONTE (hall Sofia), INTERPRED building, 36 Dragan Tsankov str |
Thursday, 3rd September
Workshop “Tailored Properties of Ionic Liquid Electrolytes for Sustainable Energy Storage Applications”
IUPAC project Ref: Proposal 2025-032-1
| Session 9 | Chairperson: Assoc. Prof. Simão Pinho | |
| 9:00 - 9:45 | PL W1 Gero Frish |
| Measuring What Matters? Speciation and Chemical Behaviour of Ionic Liquids and Deep Eutectic Solvents in Energy Storage Applications. | |
| 9:45 - 10:00 | OP W1 Şefik Süzer |
| Şefik Süzer, Tapping into Electrical-Double Layer Formation in Ionic Liquid/Carbon Interfaces using DC/AC/Pulsed X-Ray Photoelectron Spectroscopy | |
| 10:00 - 10:15 | OP W2 Snežana Papović |
| S. Papović, T.T. Borović, M. Vraneš, M.E. di Pietro, A. Rossetti, A. Roganović, Improving the thermal stability of lithium-ion battery electrolytes safety | |
| 10:15 - 10:45 | Coffee break |
| Session 10 | Chairperson: Prof. Earle Waghorne | |
| 10:45 - 11:30 | PL W2 Xinpei Gao |
| Xinpei Gao, Heterogeneous Colloid Electrolytes: Ionic Liquids, Plastic Crystals, and Liquid Crystals | |
| 11:30 - 11:45 | OP W3 Pedro Carvalho |
| Beatriz F. Esteves, Rita Nunes, Bruna R. M. Ferreira, Pedro J. Carvalho, Ionic Liquid-based Composite Membranes for Efficient Greenhouse Gases Separation | |
| 11:45 – 12:00 | OP W4 Slobodan Gadžurić |
| S. Gadžurić, N. Cakó Bagány, S. Belić, T. T. Borović, M. Vraneš, S. Papović, F. Dian, B. Šarac, D. Goste, A. Melchior, Tailoring the Properties of Ionic Liquids for Targeted Applications | |
| 12:00 – 12:30 | Closing remarks |
| 14:00 – 15:00 | Round table - IUPAC project Ref: Proposal 2025-032-1 |
| Working Group on Standardized Measurement and Properties of Ionic Liquid Electrolytes for Sustainable Energy Storage Applications | |
| POSTER SESSION 1 | ||
| P1 | E. N. Tsurko, D. Touraud and W. Kunz | Solubility Thermodynamics of Sodium Ferulate in Aqueous Solutions at Temperatures 276.15 - 363.15 K |
| P2 | S. Belić, T. T. Borović, A. Vukov, D. Goste, B. Šarac, M. Vraneš, S. Papović, N. Cakó Bagány and S. Gadžurić | Synthesis and Physico-Chemical Characterisation of Phosphonium and Ammonium Ionic Liquids for Rare Earth Recovery from Permanent Magnets |
| P3 | N. Izhbehova, Z. Vladimirova, D. Danalev, Ivan Iliev, Rositza Hristova and V. Karadjova | Antitumoral activity of novel Cu(II)–peptide complexes |
| P4 | Tian-Lan ZHANG | Understanding solubility product (Ksp) from the perspective of pseudo-equilibrium |
| P5 | J. Sohr, H. C. Moog, M. Altmaier, F. Bok, V. Brendler, D. Freyer, X. Gaona, S. Hagemann, G.-D. Miron, M. Pannach, W. Voigt and L. Wissmeier | THEREDA - Thermodynamic reference database |
| P6 | Chr. Tzvetkova, V. Georgiev, I. Karadjova, A. Stoyanova-Ivanova, L. Ivanova and A. Detcheva | Comparative Assessment of Corrosion Dynamics and Metal Ion Release from Orthodontic Archwires in Biomimetic Oral Environments |
| P7 | K. Sezanova, R. Gergulova, R. Shterinska, A. Kovacheva and D. Rabadjieva | Dissolution of (Cu, Zn) Doped Calcium Phosphates in Solution with Demineralization Activity |
| P8 | R. Gergulova, K. Sezanova, D. Rabadjieva, P. Shestakova | Insights into the Thermodynamics and Kinetics of Double-Doped Amorphous Calcium Phosphate Formation and Its Response in Artificial Saliva |
| P9 | T. Biver, C. Castelli, M. Vable, G. D. G. Santonoceta, S. Muscarella, G. Barone, C. Sgarlata | Spectroscopic data treatment for the binding of small molecules to nucleic acids and proteins |
| P10 | K. Bitchikh, N. Smakghi, A.H. Meniai | Modeling Solid–Liquid Equilibria to Predict Drug Solubility in Pharmaceutical Solvents |
| P11 | V. Georgieva, L. Gonsalvesh, S. Mileva, D. Asamova and S. Genieva | Thermodynamic Aspects of Cd(II) Adsorption onto Vine Rod-Derived Biochar |
| P12 | S. Stefanova, Y. Ivanova, P. Vassileva, I. Uzunov, D. Voykova and P. Konova | Cellulose-Based Adsorbent for Wastewater Dye Treatment |
| P13 | A. Kovacheva, M. Nedyalkov and D. Rabadjieva | Comparative assessment of the hydrochemical characteristics of Pomorie lake (Bulgaria) |
| P14 | M. Trayanova, A. Kovacheva, S. Kolev, A. Benderev, D. Rabadjieva | Lithium in thermal mineral waters in Southern Bulgaria |
| P15 | V. Petkova, E. Serafimova, K. Mihaylova, S. Panova | The effect of chemical extraction reagents on the determination of plant-available forms of P₂O₅ in High energy milled Phosphorite |
| P16 | E. Encheva-Mircheva, K. Chakarova, J. Zaharieva and M. Tsvetkov | Effect of Ce-doping on the photocatalytic activity of SrTiO3 |
| P17 | G. Vassilev, S. Holzmann, S. Harizanova, M. Kalapsazova, U. Krewer, A. Tadjer, R. Stoyanova | In-situ monitoring of gas evolution in symmetric cells for sodium-ion batteries |
| P18 | K. Tumbalova, S. Todorova, I. Yordanova, Z. Geshkova, S. Delibaltova, H. Kolev, T. Todorova, Y. Kalvachev, R. Velinova, P. Konova, G. Ivanov, P. Markov, D. Voykova, M. Anchina, A. Liutcanova and Anton Naydenov | Synthesis and characterization of Pd–Co modified ZSM-5 zeolite catalysts for methane oxidation - influence of Si/Al ratio |
| P19 | S. Petrova, E. Vasileva, N. Danchova, V. Petrov, A. Bachvarova-Nedelcheva | Synthesis and characterization of NPs-modified multifunctional cotton material |
| POSTER SESSION 2 | ||
| P20 | V. Mihalkov, J. Mateeva and R. Genova-Koleva | Optimizing synthesis parameters of decorated TiO2 and TiO2 nanotubes |
| P21 | K. Ivanova, E. Vassileva, I. Ivanova and A. Bachvarova-Nedelcheva | Synthesis, Characterization and Antimicrobial Behavior of TiO2/TeO2/CuO Sol–Gel Nanopowders |
| P22 | H. Lalkovski, L. Aleksandrov and A. Bachvarova-Nedelcheva | Sol-Gel preparation of TiO2/SiO2/CeO2 nanopowders |
| P23 | R. Kukeva, M. Kalapsazova, M. Shipochka and R. Stoyanova | EPR Evidence of Structural Degradation and Particle Size Reduction in Cycled P2- and P3-Layered Oxides |
| P24 | S. Bencheva, Y. Kostova, R. Dimitrova, Z. Yordanova, A. Bachvarova-Nedelcheva | Synthesis and Characterization of Spirulina/Silica Hybrids via Sol–Gel Processing |
| P25 | S. Mileva, A. Veli, R. Nikolova, H. Kolev, I. Tankov | Surface and structural features of asphaltene-based activated carbon |
| P26 | Al. Stoilova, N. Penov, E. Valcheva, G. Rusev, I. Karadashka | Green Synthesis and Evaluation of Nanomaterials |
| P27 | T. Koseva, S. Genieva and G. Rusev | Hydrothermal Synthesis of Novel Functional Materials Based on Rare Earth Elements |
| P28 | T. Tushev, V. Koleva, J. L. Tirado, P. Lavela, S. Lavela, S. Harizanova, R. Stoyanova | TiO2 Dry Coating Na4Fe3(PO4)2P2O7 to Improve its Sodium Energy Storage at Different Temperatures |
| P29 | Ts. Gerasimova, I. Uzunov, N. Rangelova, M. Kalapsazova and R. Stoyanova | Solubility of lignocellulosic components in phosphoric acid: approach for tuning the electrochemical performance of walnut shells-derived hard carbon |
| P30 | T. Yotova, R. Yankova and A. Kostadinova | DFT Insights into the Electronic Structure and Reactivity of Potassium Hexaaquanickel (II) Diselenate |
| P31 | Y. Kyoybashieva, Y. Kostova, I. Boyadzhieva, L. Kabaivanova and A. Bachvarova-Nedelcheva | Structural and Antibacterial Properties of Sol-Gel-Prepared Si–Chitosan-Ag Hybrids |
| P32 | V. Kondova, D. Tsekova, G. Staneva | Self-Assembling L-Glu Derivatives to Nanosized Complexes in Solution |
| P33 | Ts. Lazarova, K. Tumbalova, D. Kichukova, C. Rosmini, G. Theochari, D. Kovacheva, I. Spassova | Sonochemically prepared high-entropy spinel oxides (CoMnFeNiX)3O4, where X=Cr, Zn, Al, for methanol decomposition |
| P34 | S. Harizanova, M. Kalapsazova, D. Jugović, M. Milović, S. Mentus, R. Stoyanova | Influence of Crystal Structure and Cu Substitution on Sodium Storage in NaFeO2-based Electrodes |
| P35 | D. Ivanova, N. Kaneva | Tribocatalytic degradation of antibiotics in waters with varying hardness using nanoflowers |
| P36 | M. Nedyalkov, R. Nikolova, R. Kukeva, P. Tzvetkov, R. Stoyanova | Phase Transitions Inducing Changes in the Luminescent Properties of Manganese(II) Coordination Complexes |
| P37 | V. Stoeva, D. Marinova, L. Borislavov, and R. Stoyanova | Li/Na competition in naphthalimide electrochemical matrix |
| P38 | S. Stanchovska, M. Kalapsazova, S. Harizanova, V. Koleva, R. Stoyanova | Hydrothermal Synthesis of Sodium Titanates as High-Capacity Electrodes in Sodium-Ion Batteries |
Poster Size Guidelines:
Maximum poster size: A1 (59.4 × 84.1 cm).
Please note that posters larger than 59.4 × 84.1 cm (A1) cannot be mounted on the poster boards during the conference. We kindly ask all presenters to adhere to this size requirement when preparing their posters.
