Inorganic Chemistry, Physical and Theoretical Chemistry, Spectroscopy
51
Scopus Publications
600
Scholar Citations
15
Scholar h-index
22
Scholar i10-index
Scopus Publications
Thermocatalytic transcarbonation with diethyl carbonate for valorization of glycerol – recycling siliceous bauxite residue waste components and exploring the potential of sodalite hydroxide reservoir Yvette Szabó, Bence Kutus, Rebeka Mészáros, Péter Bélteky, Zoltán Kónya, Ákos Kukovecz, Pál Sipos, Márton Szabados Fuel, 2027 • Production of renewable and biodegradable glycerol carbonate fuel or fuel additive. • Sustainable catalytic progress using alumina industrial waste and diethyl carbonate. • Enhanced performance of tricalcium aluminate catalyst by silica incorporation. • Rapid deactivation of katoite and chloride sodalite components of bauxite residue. • Excellent and robust activity of hydroxysodalite compared to complex composites. Bauxite residues contain katoites and desilication products (sodalite and cancrinite), which are excellent candidates for Earth-abundant heterogeneous base catalysts from industrial waste sources. For the first time, they were tested in synthetizing the renewable and promising fuel or fuel additive glycerol carbonate for the purpose of recycling glycerol by-products from biodiesel production. Incorporation of silicate was found to enhance the previously established excellent catalytic activity of tricalcium aluminate (Si-free katoite). Performance of sodalites containing four different cage anion-designed (OH, CO 3 , SO 4 , Cl) and carbonated cancrinite was determined to a much greater extent by their Brönsted OH content than by the basicity of the caged anions. Direct catalytic use of bauxite residue resulted in a glycerol carbonate yield of over 80%, but it was quickly deactivated due to the limited reusability of many of its most active components ( i.e., Si-free and Si-containing katoites, chloride sodalites). However, hydroxysodalites showed excellent reusability, with a glycerol carbonate yield of around 80% even after 5 reuses. The activity of katoites and sodalities overtook that of many complex systems containing relatively rare metals, such as Ni, Cu, Zr, and Ce. Their excellent activity has made it possible to use diethyl carbonate solvent/reagent, which is more favourable in terms of sustainability, instead of the more widely applied dimethyl carbonate, even with as short reaction times as 30–60 min.
Effect of Amorphous Silicates on the Neutralization of Tricalcium Aluminate Hexahydrate Relevant to Bauxite Residue Treatment Yvette Szabó, Meerab Asher, Réka Zahorán, Judit Papp, Dániel Sebők, Pál Sipos, Márton Szabados, Markus Gräfe, Bence Kutus Inorganic Chemistry, 2026 High Resolution Image Download MS PowerPoint Slide Acid neutralization is an efficient way to lower the solution pH of bauxite residue slurries (generated via the Bayer process) to a level that enables safe handling and further utilization. Tricalcium aluminate hexahydrate (TCA, Ca 3 Al 2 (OH) 12 ) and its silicate-substituted polymorph, katoite (KAT, Ca 3 Al 2 (SiO 4 ) x (OH) 12–4 x ), are one of the major sources that contribute to the high alkalinity of residues. Yet, the neutralization chemistry of KAT phases is poorly understood. To this end, we synthesized TCA and KAT and studied their acid–base reactions. We find the as-prepared pseudo-KAT (PKAT) phase to be a poorly substituted TCA with x ≈ 0.05 while containing amorphous calcium silicate hydrate as well as sodium aluminosilicate minor phases. Upon addition of HCl, TCA first transforms to Friedel’s salt, a layered double hydroxide hosting Cl – ions, which is absent for PKAT. Further, the lack of LDH precipitation, closely related to calcium silicate hydrate, gives rise to a lower buffering range (by ∼0.5–1.2 pH units) for PKAT. Another striking consequence of minor silicate phases in PKAT is the ∼17% smaller acid consumption as compared to TCA. In conclusion, amorphous silicates markedly affect both the neutralization mechanism and capacity of tricalcium aluminate hydrates.
Microenvironment Matters: Destabilization of Iridium Anode Catalyst by CO Reduction Products Attila Kormányos, Mohd Monis Ayyub, Bence Kutus, Monaza Rashid, Tatiana Priamushko, Gergely F. Samu, Serhiy Cherevko, Balázs Endrődi, Csaba Janáky Journal of the American Chemical Society, 2026 High Resolution Image Download MS PowerPoint Slide Iridium is one of the most frequently employed anode electrocatalysts in CO 2 and CO electrolysis, thanks to its reasonable overpotential for the oxygen evolution reaction (OER) and high stability under operating conditions. The latter has been challenged recently by a handful of studies where destabilization of iridium was observed, which was explained solely by thermodynamics (iridium is unstable at strong alkaline pH and OER potentials). In this study, we demonstrate that liquid CO and CO 2 electrolysis products (such as ethanol and acetate) crossing over to the anode side under long-term operation have a severe effect on the stability of iridium. Its dissolution was studied by both ex-situ inductively coupled plasma mass spectrometry (ICP-MS) and in situ (online ICP-MS) techniques. Based on our electrolysis experiments carried out in a broad pH range (pH = 4–14), ethanol, and its partially oxidized counterpart, acetaldehyde, decreases the stability of the anode catalyst. Ethanol/acetaldehyde oxidation competes with the OER and starts in conjunction with the surface oxidation of the Ir catalyst particles. The oxygenated species are consumed by the alcohol/aldehyde oxidation process, preventing the formation of a passivating surface oxide layer, resulting in an increased iridium dissolution rate.
Interface engineering of Pt–ZnO–CeO2 by atomic layer deposition for advanced applications Anastasiia Efremova, Gergő Ballai, Ákos Szamosvölgyi, Imre Szenti, Bence Kutus, János Kiss, András Sápi, Ákos Kukovecz, Zoltán Kónya Materials and Design, 2026 The precise design of metal-oxide interfaces in heterogeneous catalysts is crucial for optimizing activity and selectivity in reactions such as ethanol decomposition. In this study, Pt_ZnO_CeO 2 composite catalysts were synthesized via atomic layer deposition (ALD) with systematically varied ZnO loadings to investigate the influence of support structure on platinum nucleation, interfacial properties, and catalytic performance. High-resolution TEM, XPS, ICP-MS reveal that ZnO strongly affects Pt growth, leading to non-monotonic trends in nanoparticle size, dispersion, and loading. These structural effects translate into distinct electronic interactions at Pt/CeO 2 , ZnO/CeO 2 and Pt/ZnO interfaces, as reflected by XPS analysis. To probe the catalytic relevance of these interfaces, ethanol decomposition was employed as an interface-sensitive reaction. The results demonstrated that moderate ZnO loading (3–5 cycles) generated a Pt/ZnO/CeO 2 interface, that significantly increased ethanol conversion and promoted C 1 -product formation. At higher ZnO coverage (30 cycles), the catalyst surface was dominated by Pt/ZnO interactions, resulting in reduced C–C bond cleavage activity. These trends were supported by in situ DRIFTS by identifying the suppression of acetate formation and promotion of aldehyde intermediates at Pt-ZnO surfaces. These findings underscore the critical role of interfacial engineering via ALD in modulating catalyst structure, metal-support interactions, and reaction pathways.
LaCoO3 perovskite-catalysed carbazole synthesis via amination/direct arylation one-pot tandem process Sándor Balázs Nagy, Bence Kutus, Gábor Varga Journal of Catalysis, 2026 Carbazoles are of great importance due to their versatility. They can be used as active ingredients in various drugs or as scaffolds for the production of functional optoelectronics. Therefore, it is obvious that a sustainable and potentially green synthesis of carbazoles needs to be realized to be part of the coming circular economy. Herein, we report an amination – direct arylation tandem strategy on the basis of LaCoO 3 perovskite catalysis, which enables the production of carbazoles from anilines and 1,2-dichlorobenzenes in a ligand-, additive- and noble metal-free manner in a green solvent (CPME). The perovskite oxide has a unique selectivity for carbazoles with a reasoning versatility. The bulk catalyst used stands out strongly from benchmark ones due to its reusability (up to 10 runs), especially since there are only a few examples of the heterogeneous catalytic strategy for carbazoles, all of which employ noble metal catalysts and realize intramolecular cyclisations. A cooperative nature of the function of the different metal oxide sites was found. However, it can be observed that the lanthanum sites are primarily responsible for the amination step, while the cobalt oxide sites can facilitate the C–H activation – which is the rate-determining – step that requires the presence of oxygen for optimal functioning.
Terahertz insights into liquid water physics from an experimental perspective Zheng Yu, Jingyin Xu, Rong Liu, Wennan Liu, Chang Shu, Bence Kutus, Jinqing Yu, Wenhao Zheng, Xiaoqing Yu Physical Chemistry Chemical Physics, 2026 A timely and comprehensive summary of how terahertz (THz) spectroscopy is revolutionizing the study of liquids.
Lithium Carbonate Conversion to Lithium Hydroxide Using Calcium Hydroxide: Equilibrium is Governed by Vaterite Formation Péter Török, Ilona Halasiné-Varga, Laurent Duvivier, Maha Maimi, Olivier Hubert, Susanna Minnaar, Pál Sipos, Chris du Plessis, Bence Kutus Inorganic Chemistry, 2025 High Resolution Image Download MS PowerPoint Slide The conversion of lithium carbonate (Li 2 CO 3 ) with calcium hydroxide (Ca(OH) 2 ) is a cornerstone industrial process for synthesizing lithium hydroxide (LiOH), a critical precursor for high-performance cathodes in advanced lithium-ion batteries. Achieving a high Li 2 CO 3 -to-LiOH yield is crucial for efficient industrial processing. However, despite its industrial relevance, the influence of concentration and equilibrium conditions on this conversion reaction remains insufficiently explored. To address this gap, we investigated the conversion reaction by varying the Li 2 CO 3 concentration and the Ca(OH) 2:Li 2 CO 3 molar ratio. Near-complete conversion yields occur below the maximum concentration threshold of 1.6 mol L –1 LiOH, while yields diminish above this limit. Sequential reaction experiments confirm that the system adheres to Le Chatelier’s principle, and reverse reactions initiated from LiOH and CaCO 3 demonstrate true equilibrium behavior. Furthermore, backward reactions involving distinct CaCO 3 polymorphs reveal different equilibrium states. Notably, the presence of vaterite alongside calcite significantly affects the equilibrium concentration of LiOH, underscoring the role of solid-phase composition in governing reaction thermodynamics. These findings provide a deeper understanding of the causticization mechanism and offer actionable insights for optimizing LiOH production in industrial settings.
A comparative study on the chronic responses of titanium dioxide nanoparticles on aerobic granular sludge and algal–bacterial granular sludge processes Alfonz Kedves, Henrik Haspel, Çağdaş Yavuz, Bence Kutus, Zoltán Kónya Environmental Science and Pollution Research, 2025 The chronic effects of titanium dioxide nanoparticles (TiO2 NPs) on aerobic granular sludge (AGS) and algal–bacterial granular sludge (ABGS) was examined in this study. Sequencing batch bioreactors (SBRs) and photo sequencing batch bioreactors (PSBRs) were operated with synthetic wastewater containing 0, 1, 5, 10, 20, 30, and 50 mg L−1 TiO2 NPs for 10 days. Nanoparticles at concentrations of 1 and 5 mg L−1 did not impact nutrient removal but led to an increase in extracellular polymeric substances (EPSs), primarily in protein (PN). With increasing nanoparticle concentration, the negative effect became more pronounced, mainly in the AGS SBRs. At 50 mg L−1 TiO2, chemical oxygen demand (COD), ammonia–nitrogen (NH3-N), and phosphorus (PO43−) removal decreased by 20.9%, 12.2%, and 35.1% in AGS, respectively, while in ABGS, they reached only 13.4%, 5.7%, and 14.2%. ABGS exhibited steady-state nutrient removal at 30 and 50 mg L−1 TiO2 NPs after around 5 days. The higher microbial activity and EPS content in the sludge, coupled with the symbiotic relationship between algae and bacteria, contributed to the higher tolerance of ABGS to nanoparticles. Finally, although nanoparticles reduced biomass in both types of bioreactors, the accumulation of TiO2 NPs in the sludge, confirmed by Energy-dispersive X-ray spectroscopy analysis, and the absence of detectable titanium concentrations in the effluent wastewater, measured by Inductively-coupled plasma mass spectrometry, may be attributed to the specific operational conditions of this study, including the relatively short operation period (10 days) and high initial MLSS concentration (6 g L−1).
Thermocatalytic transcarbonation with diethyl carbonate for valorization of glycerol–recycling siliceous bauxite residue waste components and exploring the potential of … Y Szabó, B Kutus, R Mészáros, P Bélteky, Z Kónya, Á Kukovecz, P Sipos, ... Fuel 427, 139880 , 2027 2027
Self-assembled polymeric prodrug provides controlled cisplatin release and enhanced efficiency in local chemotherapy MM Abdelghafour, B Kutus, L Mérai, M Csanády Jr, N Szemerédi, ... Journal of Pharmaceutical Sciences, 104317 , 2026 2026
Interface engineering of Pt–ZnO–CeO2 by atomic layer deposition for advanced applications A Efremova, G Ballai, Á Szamosvölgyi, I Szenti, B Kutus, J Kiss, A Sápi, ... Materials & Design 263, 115640 , 2026 2026 Citations: 1
Effect of Amorphous Silicates on the Neutralization of Tricalcium Aluminate Hexahydrate Relevant to Bauxite Residue Treatment Y Szabó, M Asher, R Zahorán, J Papp, D Sebők, P Sipos, M Szabados, ... Inorganic Chemistry 65 (9), 5178-5190 , 2026 2026
Microenvironment Matters: Destabilization of Iridium Anode Catalyst by CO Reduction Products A Kormányos, MM Ayyub, B Kutus, M Rashid, T Priamushko, GF Samu, ... Journal of the American Chemical Society 148 (8), 9006-9013 , 2026 2026
Highly stable antitumor silver-lipid nanoparticles optimized for targeted therapy A Darwish, N Sándor, I Szenti, T Marosvölgyi, K Juhász, A Rónavári, ... International Journal of Nanomedicine, 1351-1366 , 2025 2025 Citations: 4
Lithium Carbonate Conversion to Lithium Hydroxide Using Calcium Hydroxide: Equilibrium is Governed by Vaterite Formation P Torok, I Halasiné-Varga, L Duvivier, M Maimi, O Hubert, S Minnaar, ... Inorganic Chemistry 64 (48), 23575-23585 , 2025 2025 Citations: 3
LaCoO3 perovskite-catalysed carbazole synthesis via amination/direct arylation one-pot tandem process SB Nagy, B Kutus, G Varga Journal of Catalysis, 116556 , 2025 2025
A comparative study on the chronic responses of titanium dioxide nanoparticles on aerobic granular sludge and algal–bacterial granular sludge processes A Kedves, H Haspel, Ç Yavuz, B Kutus, Z Kónya Environmental Science and Pollution Research 32 (54), 30159-30169 , 2025 2025 Citations: 3
The interaction of δ-CsPbI3 and CsPbBr3 nanostructures with soil extracts K Solymos, J Chagu, A Badam, Á Ágoston, B Kutus, Á Kukovecz, Z Kónya, ... Environmental Pollution 380, 126454 , 2025 2025
Multi-round Recycling of Green Waste for the Production of Silver Nanoparticles: Synthesis, Characterization, and Biological Activity A Rónavári, E Kachal, N Igaz, B Szerencsés, B Kutus, I Pfeiffer, M Kiricsi, ... ACS omega 10 (32), 35793-35808 , 2025 2025
Graphitic Nature Governs CO 2 Hydrogenation Reactions on Platinum@Carbon Nanocomposites JF Gómez-Pérez, A Sápi, V Bíró, F Farkas, S Kovačič, B Kutus, P Sipos, ... Catalysis Letters 155 (4), 149 , 2025 2025 Citations: 2
Sonochemically improved regeneration of mechanically amorphized Ca2Cr-layered double hydroxides–Synthesis, characterization and photocatalytic lidocaine decomposition V Szabó, R Mészáros, B Kutus, GF Samu, Z Kónya, Á Kukovecz, P Sipos, ... Applied Clay Science 265, 107684 , 2025 2025 Citations: 4
La-based perovskite structures as efficient heterogeneous catalysts for acceptorless dehydrogenative coupling of alcohols and amidines toward pyrimidines SB Nagy, AA Ádám, B Kutus, GF Samu, Á Kukovecz, Z Kónya, G Varga Green Chemistry 27 (48), 15654-15669 , 2025 2025 Citations: 1
Solution triggered facile ion-exchange and phase transformation of ternary cesium-copper halide pseudo-perovskites C Hajdu, TS Zsigmond, B Kutus, D Ungor, E Csapó, C Janáky, GF Samu Chemical Communications 61 (17), 3508-3511 , 2025 2025 Citations: 1
Utilization of desilication products as efficient adsorbents for the removal of basic fuchsine E Kása, I Petri, M Szabados, Á Ágoston, A Sápi, Z Kónya, Á Kukovecz, ... Journal of Hazardous Materials 480, 136234 , 2024 2024 Citations: 5
Characterization of the Solution Properties of Sodium Dodecylsulphate Containing Alkaline–Surfactant–Polymer Flooding Media C Bús, B Kutus, Á Ágoston, L Janovák, P Sipos Foundations 4 (2), 273-287 , 2024 2024 Citations: 2
Continuous-flow hydrogenation of cinnamaldehyde over catalysts derived from modified CoAl4 layered double hydroxides incorporating Mn, Ni, Cu and Zn ions R Mészáros, V Szabó, B Kutus, K Baán, Z Kónya, Á Kukovecz, P Sipos, ... Applied Catalysis A: General 679, 119738 , 2024 2024 Citations: 4
Optimized Pt–Co Alloy Nanoparticles for Reverse Water–Gas Shift Activation of CO 2 A Szamosvolgyi, Á Pitó, A Efremova, K Baán, B Kutus, M Suresh, A Sápi, ... ACS Applied Nano Materials 7 (9), 9968-9977 , 2024 2024 Citations: 10
The neutralization of tricalcium aluminate hexahydrate and its spontaneous transformation into Friedel's salt, a layered double hydroxide E Kása, Y Szabó, M Szabados, Á Kukovecz, Z Kónya, P Sipos, B Kutus Cement and Concrete Research 177, 107414 , 2024 2024 Citations: 19
MOST CITED SCHOLAR PUBLICATIONS
A comprehensive study on the dominant formation of the dissolved Ca (OH) 2 (aq) in strongly alkaline solutions saturated by Ca (II) B Kutus, A Gácsi, A Pallagi, I Pálinkó, G Peintler, P Sipos RSC advances 6 (51), 45231-45240 , 2016 2016 Citations: 72
Recent advances in the aqueous chemistry of the calcium (II)-gluconate system–Equilibria, structure and composition of the complexes forming in neutral and in alkaline solutions B Kutus, X Gaona, A Pallagi, I Pálinkó, M Altmaier, P Sipos Coordination Chemistry Reviews 417, 213337 , 2020 2020 Citations: 55
Multinuclear complex formation between Ca (II) and gluconate ions in hyperalkaline solutions A Pallagi, EG Bajnoczi, SE Canton, T Bolin, G Peintler, B Kutus, Z Kele, ... Environmental science & technology 48 (12), 6604-6611 , 2014 2014 Citations: 52
Multinuclear complex formation in aqueous solutions of Ca (II) and heptagluconate ions A Pallagi, Z Csendes, B Kutus, E Czeglédi, G Peintler, P Forgo, I Pálinkó, ... Dalton Transactions 42 (23), 8460-8467 , 2013 2013 Citations: 27
The dissolution kinetics of raw and mechanochemically treated kaolinites in industrial spent liquor–The effect of the physico-chemical properties of the solids E Kása, M Szabados, K Baán, Z Kónya, Á Kukovecz, B Kutus, I Pálinkó, ... Applied Clay Science 203, 105994 , 2021 2021 Citations: 24
Formation of mono-and binuclear neodymium (III)–gluconate complexes in aqueous solutions in the pH range of 2–8 B Kutus, N Varga, G Peintler, A Lupan, AAA Attia, I Pálinkó, P Sipos Dalton Transactions 46 (18), 6049-6058 , 2017 2017 Citations: 24
Comparison of the Ca 2+ complexing properties of isosaccharinate and gluconate–is gluconate a reliable structural and functional model of isosaccharinate? C Dudás, B Kutus, É Böszörményi, G Peintler, Z Kele, I Pálinkó, P Sipos Dalton Transactions 46 (40), 13888-13896 , 2017 2017 Citations: 24
Estimation of the solubility product of hydrocalumite–hydroxide, a layered double hydroxide with the formula of [Ca2Al (OH) 6] OH· nH2O A Gácsi, B Kutus, Z Kónya, Á Kukovecz, I Pálinkó, P Sipos Journal of Physics and Chemistry of Solids 98, 167-173 , 2016 2016 Citations: 20
The neutralization of tricalcium aluminate hexahydrate and its spontaneous transformation into Friedel's salt, a layered double hydroxide E Kása, Y Szabó, M Szabados, Á Kukovecz, Z Kónya, P Sipos, B Kutus Cement and Concrete Research 177, 107414 , 2024 2024 Citations: 19
Dielectric response of light, heavy and heavy-oxygen water: isotope effects on the hydrogen-bonding network's collective relaxation dynamics B Kutus, A Shalit, P Hamm, J Hunger Physical Chemistry Chemical Physics 23 (9), 5467-5473 , 2021 2021 Citations: 19
Probing water state during lipidic mesophases phase transitions Y Yao, S Catalini, B Kutus, J Hunger, P Foggi, R Mezzenga Angewandte Chemie International Edition 60 (48), 25274-25280 , 2021 2021 Citations: 18
Some aspects of the aqueous solution chemistry of the Na+/Ca2+/OH−/Cit3− system: The structure of a new calcium citrate complex forming under hyperalkaline conditions A Gácsi, B Kutus, Á Buckó, Z Csendes, G Peintler, I Pálinkó, P Sipos Journal of Molecular Structure 1118, 110-116 , 2016 2016 Citations: 18
ML and ML 2 complex formation between Ca (II) and d-glucose derivatives in aqueous solutions B Kutus, D Ozsvár, N Varga, I Pálinkó, P Sipos Dalton Transactions 46 (4), 1065-1074 , 2017 2017 Citations: 17
Equilibria and Dynamics of Sodium Citrate Aqueous Solutions: The Hydration of Citrate and Formation of the Na 3 Cit 0 Ion Aggregate B Kutus, C Dudás, S Friesen, G Peintler, I Pálinkó, P Sipos, R Buchner The Journal of Physical Chemistry B 124 (43), 9604-9614 , 2020 2020 Citations: 16
Stability and structural aspects of complexes forming between aluminum (III) and D-heptagluconate in acidic to strongly alkaline media: An unexpected diversity Á Buckó, B Kutus, G Peintler, Z Kele, I Pálinkó, P Sipos Journal of Molecular Liquids 314, 113645 , 2020 2020 Citations: 16
Configuration-dependent complex formation between Ca (II) and sugar carboxylate ligands in alkaline medium: Comparison of L-gulonate with D-gluconate and D-heptaguconate B Kutus, C Dudás, G Peintler, I Pálinkó, P Sipos Carbohydrate research 460, 34-40 , 2018 2018 Citations: 14
Magnesium(II) d -Gluconate Complexes Relevant to Radioactive Waste Disposals: Metal-Ion-Induced Ligand Deprotonation or Ligand-Promoted Metal-Ion … B Kutus, C Dudás, E Orbán, A Lupan, AAA Attia, I Pálinkó, P Sipos, ... Inorganic Chemistry 58 (10), 6832-6844 , 2019 2019 Citations: 13
Binding of Ca 2+ Ions to Alkylbenzene Sulfonates: Micelle Formation, Second Critical Concentration and Precipitation AA Ádám, S Ziegenheim, L Janovák, M Szabados, C Bús, Á Kukovecz, ... Materials 16 (2), 494 , 2023 2023 Citations: 11
Calcium complexation and acid–base properties of l-gulonate, a diastereomer of d-gluconate B Kutus, Á Buckó, G Peintler, I Pálinkó, P Sipos Dalton Transactions 45 (45), 18281-18291 , 2016 2016 Citations: 11
Calcium L-tartrate complex formation in neutral and in hyperalkaline aqueous solutions A Gacsi, B Kutus, Z Csendes, T Faragó, G Peintler, I Palinko, P Sipos Dalton Transactions 45 (43), 17296-17303 , 2016 2016 Citations: 11