@article{MTMT:34829600, title = {Monoethanolamine assisted CO2 hydrogenation to methanol – A computational study}, url = {https://m2.mtmt.hu/api/publication/34829600}, author = {Hadjadj, Rachid and Csizmadia, Imre Gyula and Qasim, Hadeer Waleed and Aljaberi , Dalal Karad Thbayh and Viskolcz, Béla and Fiser, Béla}, doi = {10.1016/j.mcat.2024.114091}, journal-iso = {MOL CATAL}, journal = {MOLECULAR CATALYSIS}, volume = {559}, unique-id = {34829600}, issn = {2468-8231}, year = {2024}, eissn = {2468-8274}, orcid-numbers = {Fiser, Béla/0000-0003-0603-4626} } @article{MTMT:34717280, title = {The first step of polycyclic aromatic hydrocarbon growth – A case study of hydrogen abstractions by •H, •OH, and •CH3 radical}, url = {https://m2.mtmt.hu/api/publication/34717280}, author = {Reizer, Edina and Tokaji, György Marcell and Palusiak, Marcin and Viskolcz, Béla and Fiser, Béla}, doi = {10.1016/j.comptc.2024.114530}, journal-iso = {COMPUT THEOR CHEM}, journal = {COMPUTATIONAL AND THEORETICAL CHEMISTRY}, volume = {1234}, unique-id = {34717280}, issn = {2210-271X}, year = {2024}, eissn = {2210-2728}, orcid-numbers = {Fiser, Béla/0000-0003-0603-4626} } @article{MTMT:34688029, title = {Simultaneous Determination of Enantiomeric Purity and Organic Impurities of Dexketoprofen Using Reversed-Phase Liquid Chromatography—Enhancing Enantioselectivity through Hysteretic Behavior and Temperature-Dependent Enantiomer Elution Order Reversal on Polysaccharide Chiral Stationary Phases}, url = {https://m2.mtmt.hu/api/publication/34688029}, author = {Dobó, Máté and Dombi, Gergely and Köteles, István and Fiser, Béla and Kis, Csenge and Szabó, Zoltán-István and Tóth, Gergő}, doi = {10.3390/ijms25052697}, journal-iso = {INT J MOL SCI}, journal = {INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES}, volume = {25}, unique-id = {34688029}, issn = {1661-6596}, abstract = {A reversed-phase high-performance liquid chromatographic (HPLC) method was developed for the simultaneous determination of the potential impurities of dexketoprofen, including the distomer R-ketoprofen. After screening the separation capability of four polysaccharide columns (Lux Amylose-1, Lux Amylose-2, Lux Cellulose-1 and Lux Cellulose-2) in polar organic and in reversed-phase modes, appropriate enantioseparation was observed only on the Lux Amylose-2 column in an acidified acetonitrile/water mixture. A detailed investigation of the mobile phase composition and temperature for enantio- and chemoselectivity showed many unexpected observations. It was observed that both the resolution and the enantiomer elution order can be fine-tuned by varying the temperature and mobile phase composition. Moreover, hysteresis of the retention times and enantioselectivity was also observed in reversed-phase mode using methanol/water mixtures on amylose-type columns. This could indicate that the three-dimensional structure of the amylose column can change by transitioning from a polar organic to a reversed-phase mode, which affects the enantioseparation process. Temperature-dependent enantiomer elution order and rare enthalpic/entropic controlled enantioseparation in the operative temperature range were also observed in reversed-phase mode. To find the best methodological conditions for the determination of dexketoprofen impurities, a full factorial optimization design was performed. Using the optimized parameters (Lux Amylose-2 column with water/acetonitrile/acetic acid 50/50/0.1 (v/v/v) at a 1 mL/min flow rate at 20 °C), baseline separations were achieved between all compounds within 15 min. Our newly developed HPLC method was validated according to the current guidelines, and its application was tested on commercially available pharmaceutical formulations. According to the authors’ knowledge, this is the first study to report hysteretic behavior on polysaccharide columns in reversed-phase mode.}, year = {2024}, eissn = {1422-0067}, orcid-numbers = {Köteles, István/0000-0002-1678-233X; Fiser, Béla/0000-0003-0603-4626; Szabó, Zoltán-István/0000-0002-8740-0212; Tóth, Gergő/0000-0001-5341-319X} } @article{MTMT:34656926, title = {Bentonite as eco-friendly natural mineral support for Pd/CoFe2O4 catalyst applied in toluene diamine synthesis}, url = {https://m2.mtmt.hu/api/publication/34656926}, author = {Hatvani-Nagy, Alpár Ferencz and Hajdu, Viktória and Ilosvai, Mária Ágnes and Muránszky, Gábor and Sikora, Emőke and Kristály, Ferenc and Daróczi, Lajos and Viskolcz, Béla and Fiser, Béla and Vanyorek, László}, doi = {10.1038/s41598-024-54792-5}, journal-iso = {SCI REP}, journal = {SCIENTIFIC REPORTS}, volume = {14}, unique-id = {34656926}, issn = {2045-2322}, abstract = {Toluene diamine (TDA) is a major raw material in the polyurethane industry and thus, its production is highly important. TDA is obtained through the catalytic hydrogenation of 2,4-dinitrotoluene (2,4-DNT). In this study a special hydrogenation catalyst has been developed by decomposition cobalt ferrite nanoparticles onto a natural clay-oxide nanocomposite (bentonite) surface using a microwave-assisted solvothermal method. The catalyst particles were examined by TEM and X-ray diffraction. The palladium immobilized on the bentonite crystal surface was identified using an XRD and HRTEM device. The obtained catalyst possesses the advantageous property of being easily separable due to its magnetizability on a natural mineral support largely available and obtained through low carbon- and energy footprint methods. The catalyst demonstrated outstanding performance with a 2,4-DNT conversion rate exceeding 99% along with high yields and selectivity towards 2,4-TDA and all of this achieved within a short reaction time. Furthermore, the developed catalyst exhibited excellent stability, attributed to the strong interaction between the catalytically active metal and its support. Even after four cycles of reuse, the catalytic activity remained unaffected and the Pd content of the catalyst did not change, which indicates that the palladium component remained firmly attached to the magnetic support's surface.}, keywords = {HYDROGENATION; Ferrite; Magnetic; 2,4-DNT}, year = {2024}, eissn = {2045-2322}, orcid-numbers = {Kristály, Ferenc/0000-0002-0075-5994; Fiser, Béla/0000-0003-0603-4626} } @article{MTMT:34576072, title = {Stoichiometric reaction and catalytic effect of 2-dimethylaminoethanol in urethane formation}, url = {https://m2.mtmt.hu/api/publication/34576072}, author = {Qasim, Hadeer Waleed and Hadjadj, Rachid and Viskolcz, Béla and Fiser, Béla}, doi = {10.1039/D3CP05800J}, journal-iso = {PHYS CHEM CHEM PHYS}, journal = {PHYSICAL CHEMISTRY CHEMICAL PHYSICS}, volume = {26}, unique-id = {34576072}, issn = {1463-9076}, abstract = {A computational study of the stoichiometric reaction and catalytic effect of 2-dimethylaminoethanol (DMEA) in urethane formation was performed.}, year = {2024}, eissn = {1463-9084}, pages = {7103-7108}, orcid-numbers = {Fiser, Béla/0000-0003-0603-4626} } @article{MTMT:34448514, title = {Chiral Separation of Vildagliptin by Capillary Electrophoresis—The Study of Enantiomeric Complexation}, url = {https://m2.mtmt.hu/api/publication/34448514}, author = {Papp, L.A. and Hancu, G. and Szabó, Z.I. and Székely-Szentmiklósi, B. and Gáti, T. and Fiser, Béla and Mazákné Kraszni, Márta and Tóth, Gergő}, doi = {10.3390/sym16010017}, journal-iso = {SYMMETRY-BASEL}, journal = {SYMMETRY (BASEL)}, volume = {16}, unique-id = {34448514}, year = {2024}, eissn = {2073-8994}, orcid-numbers = {Fiser, Béla/0000-0003-0603-4626; Mazákné Kraszni, Márta/0000-0003-4364-9486; Tóth, Gergő/0000-0001-5341-319X} } @article{MTMT:34500772, title = {Bond Dissociation Enthalpy as a Tool to Study Urethane Degradation}, url = {https://m2.mtmt.hu/api/publication/34500772}, author = {Mallouhi, Julie and Viskolcz, Béla and Dorogházi, Emma and Fiser, Béla}, doi = {10.32974/mse.2022.010}, journal-iso = {HUNG MATER CHEM SCI ENG}, journal = {HUNGARIAN MATERIALS AND CHEMICAL SCIENCES AND ENGINEERING}, volume = {47}, unique-id = {34500772}, issn = {3004-0000}, year = {2023}, eissn = {3004-0817}, pages = {100-108}, orcid-numbers = {Fiser, Béla/0000-0003-0603-4626} } @article{MTMT:34500768, title = {Investigating Collagen as a Bio-Material by Molecular Dynamics Simulations}, url = {https://m2.mtmt.hu/api/publication/34500768}, author = {ZAKARAIA, DIMAH and Aljaberi , Dalal Karad Thbayh and Fiser, Béla and Owen, Michael Christopher}, doi = {10.32974/mse.2022.012}, journal-iso = {HUNG MATER CHEM SCI ENG}, journal = {HUNGARIAN MATERIALS AND CHEMICAL SCIENCES AND ENGINEERING}, volume = {47}, unique-id = {34500768}, issn = {3004-0000}, year = {2023}, eissn = {3004-0817}, pages = {118-127}, orcid-numbers = {Fiser, Béla/0000-0003-0603-4626} } @article{MTMT:34498454, title = {Machine Learning Assisted Polymer Design and Development}, url = {https://m2.mtmt.hu/api/publication/34498454}, author = {Lucjuk-Huszár, Kornélia and Viskolcz, Béla and Garami, Attila and Fiser, Béla}, journal-iso = {Doktorandusz Almanach}, journal = {Doktorandusz Almanach}, volume = {2023}, unique-id = {34498454}, issn = {2939-7294}, year = {2023}, pages = {123-128}, orcid-numbers = {Fiser, Béla/0000-0003-0603-4626} } @article{MTMT:34498428, title = {Poliuretán - ásványi anyag prekompozitok reológiai vizsgálata}, url = {https://m2.mtmt.hu/api/publication/34498428}, author = {Hatvani-Nagy, Alpár Ferencz and Fiser, Béla and Viskolcz, Béla}, journal-iso = {Doktorandusz Almanach}, journal = {Doktorandusz Almanach}, volume = {2023}, unique-id = {34498428}, issn = {2939-7294}, year = {2023}, pages = {64-69}, orcid-numbers = {Fiser, Béla/0000-0003-0603-4626} }