@article{MTMT:34837884, title = {Hydroconversion of lignin-derived platform compound guaiacol to fuel additives and value-added chemicals over alumina-supported Ni catalysts}, url = {https://m2.mtmt.hu/api/publication/34837884}, author = {Novodárszki, Gyula and Lónyi, Ferenc and Csík, Balázs and Mihályi, Magdolna R. and Barthos, Róbert and Valyon, József and Vikár, Anna and Deka, Dhanapati and Pászti, Zoltán and Shi, Yuting and Solt, Hanna E.}, doi = {10.1016/j.apcata.2024.119757}, journal-iso = {APPL CATAL A-GEN}, journal = {APPLIED CATALYSIS A-GENERAL}, volume = {680}, unique-id = {34837884}, issn = {0926-860X}, year = {2024}, eissn = {1873-3875}, pages = {119757} } @article{MTMT:34762097, title = {Effect of Non‐Thermal Sulfur Hexafluoride Cold Plasma Modification on Surface Properties of Polyoxymethylene}, url = {https://m2.mtmt.hu/api/publication/34762097}, author = {Chodkowski, Michał and Terpiłowski, Konrad and Románszki, Loránd and Klébert, Szilvia and Mohai, Miklós and Károly, Zoltán}, doi = {10.1002/cphc.202300709}, journal-iso = {CHEMPHYSCHEM}, journal = {CHEMPHYSCHEM: A EUROPEAN JOURNAL OF CHEMICAL PHYSICS AND PHYSICAL CHEMISTRY}, unique-id = {34762097}, issn = {1439-4235}, abstract = {X‐ray photoelectron spectroscopy was employed to reveal the differences in the chemical structure of the topmost layer after plasma modification. It was found out that changes in the surface properties of the polymer could be observed even after 20 seconds of treatment. The surface becomes hydrophobic or superhydrophobic, with the water contact angles up to 160 degrees. Morphological changes and increased roughness can be observed only in the nanoscale, whereas the structure seems to be unaffected in the microscale. As a result of plasma modification a permanent hydrophobic effect was obtained on the polyoxymethylene surface.}, year = {2024}, eissn = {1439-7641}, orcid-numbers = {Terpiłowski, Konrad/0000-0002-8078-3644; Klébert, Szilvia/0000-0002-3107-3371} } @{MTMT:34756886, title = {Chapter 5. Nanostructured Materials and Electronic Nose Devices: Introduction}, url = {https://m2.mtmt.hu/api/publication/34756886}, isbn = {9789819713905}, author = {Shaban, Abdul and Tala, Abouhalkuma and Vastag, Gyöngyi and Telegdi, Lászlóné}, booktitle = {Nanostructured Materials for Electronic Nose}, unique-id = {34756886}, year = {2024}, orcid-numbers = {Shaban, Abdul/0000-0002-6365-0268} } @article{MTMT:34753165, title = {Insight into the Structure and Redox Chemistry of [Carbonatotetraamminecobalt(III)] Permanganate and Its Monohydrate as Co-Mn-Oxide Catalyst Precursors of the Fischer-Tropsch Synthesis}, url = {https://m2.mtmt.hu/api/publication/34753165}, author = {Béres, Kende Attila and Dürvanger, Zsolt and Homonnay, Zoltán and Nagyné Bereczki, Laura and Barta Holló, Berta and Farkas, Attila and Petruševski, Vladimir M. and Kótai, László}, doi = {10.3390/inorganics12040094}, journal-iso = {INORGANICS}, journal = {INORGANICS}, volume = {12}, unique-id = {34753165}, abstract = {[Carbonatotetraamminecobalt(III)] permanganate monohydrate was synthesized first in the metathesis reaction of [Co(NH3)4CO3]NO3 and NaMnO4 in aqueous solution. Its thermal dehydration at 100 °C resulted in phase-pure [Co(NH3)4CO3]MnO4 (compound 1). Compounds 1 and 2 (i.e., the hydrated form) were studied with IR, far-IR, and low-temperature Raman spectroscopies, and their vibrational modes were assigned. The lattice parameters were determined by powder X-ray diffraction (PXRD) and single crystal X-ray diffraction (SXRD) methods for the triclinic and orthorhombic compounds 1 and 2, respectively. The detailed structure of compound 2 was determined, and the role of hydrogen bonds in the structural motifs was clarified. UV studies on compounds 1 and 2 showed the distortion of the octahedral geometry of the complex cation during dehydration because of the partial loss of the hydrogen bonds between the crystal water and the ligands of the complex cation. The thermal decomposition consists of a solid phase quasi-intramolecular redox reaction between the ammonia ligands and permanganate anions with the formation of ammonia oxidation products (H2O, NO, N2O, and CO2). The solid phase reaction product is amorphous cobalt manganese oxide containing ammonium, carbonate (and nitrate) anions. The temperature-controlled thermal decomposition of compound 2 in toluene at 110 °C showed that one of the decomposition intermediates is ammonium nitrate. The decomposition intermediates are transformed into Co1.5Mn1.5O4 spinel with MnCo2O4 structure upon further heating. Solid compound 2 gave the spinel at 500 °C both in an inert and air atmosphere, whereas the sample pre-treated in toluene at 110 °C without and with the removal of ammonium nitrate by aqueous washing, gave the spinel already at 300 and 400 °C, respectively. The molten NH4NO3 is a medium to start spinel crystallization, but its decomposition stops further crystal growth of the spinel phase. By this procedure, the particle size of the spinel product as low as ~4.0 nm could be achieved for the treatments at 300 and 400 °C, and it increased only to 5.7 nm at 500 °C. The nano-sized mixed cobalt manganese oxides are potential candidates as Fischer-Tropsch catalysts.}, year = {2024}, eissn = {2304-6740}, orcid-numbers = {Béres, Kende Attila/0000-0003-4257-0581; Dürvanger, Zsolt/0000-0002-2652-4916; Homonnay, Zoltán/0000-0001-5299-5394; Barta Holló, Berta/0000-0002-5786-442X; Farkas, Attila/0000-0002-8877-2587} } @article{MTMT:34751383, title = {Design of Nickel-Containing Nanocomposites Based on Ordered Mesoporous Silica: Synthesis, Structure, and Methylene Blue Adsorption}, url = {https://m2.mtmt.hu/api/publication/34751383}, author = {Kouznetsova, T. and Ivanets, A. and Prozorovich, V. and Shornikova, P. and Kapysh, L. and Tian, Q. and Péter, László and Trif, László and Almásy, László}, doi = {10.3390/gels10020133}, journal-iso = {GELS-BASEL}, journal = {GELS (BASEL)}, volume = {10}, unique-id = {34751383}, year = {2024}, eissn = {2310-2861}, orcid-numbers = {Péter, László/0000-0001-5604-0982; Trif, László/0000-0002-3960-1829} } @article{MTMT:34718662, title = {Hexakis(urea-O)iron Complex Salts as a Versatile Material Family: Overview of Their Properties and Applications}, url = {https://m2.mtmt.hu/api/publication/34718662}, author = {Béres, Kende Attila and Homonnay, Zoltán and Kótai, László}, doi = {10.1021/acsomega.3c09635}, journal-iso = {ACS OMEGA}, journal = {ACS OMEGA}, volume = {9}, unique-id = {34718662}, issn = {2470-1343}, year = {2024}, eissn = {2470-1343}, pages = {11148-11167}, orcid-numbers = {Béres, Kende Attila/0000-0003-4257-0581; Homonnay, Zoltán/0000-0001-5299-5394} } @article{MTMT:34679063, title = {Utility function-based generalization of sum of ranking differences–country-wise analysis of greenhouse gas emissions}, url = {https://m2.mtmt.hu/api/publication/34679063}, author = {Ipkovich, Ádám and Héberger, Károly and Sebestyén, Viktor and Abonyi, János}, doi = {10.1016/j.ecolind.2024.111734}, journal-iso = {ECOL INDIC}, journal = {ECOLOGICAL INDICATORS}, volume = {160}, unique-id = {34679063}, issn = {1470-160X}, year = {2024}, eissn = {1872-7034}, orcid-numbers = {Ipkovich, Ádám/0000-0003-0617-1831; Sebestyén, Viktor/0000-0003-0670-9195; Abonyi, János/0000-0001-8593-1493} } @article{MTMT:34679053, title = {A silica-supported organocatalyst for polycarbonate methanolysis under mild and economic conditions}, url = {https://m2.mtmt.hu/api/publication/34679053}, author = {Fehér, Zsuzsanna and Németh, Réka and Kiss, Johanna and Balterer, Bence and Verebélyi, Klára and Iván, Béla and Kupai, József}, doi = {10.1016/j.cej.2024.149832}, journal-iso = {CHEM ENG J}, journal = {CHEMICAL ENGINEERING JOURNAL}, volume = {485}, unique-id = {34679053}, issn = {1385-8947}, year = {2024}, eissn = {1873-3212}, orcid-numbers = {Németh, Réka/0009-0005-2477-745X; Kiss, Johanna/0000-0003-1969-5300; Iván, Béla/0000-0003-2475-6841; Kupai, József/0000-0002-4212-4517} } @article{MTMT:34643365, title = {Reaction of Partially Methylated Polygalacturonic Acid with Iron(III) Chloride and Characterization of a New Mixed Chloride–Polygalacturonate Complex}, url = {https://m2.mtmt.hu/api/publication/34643365}, author = {Kótai, László and Lázár, Károly and Kiss, László Ferenc and Szentmihályi, Klára}, doi = {10.3390/molecules29040890}, journal-iso = {MOLECULES}, journal = {MOLECULES}, volume = {29}, unique-id = {34643365}, issn = {1420-3049}, year = {2024}, eissn = {1420-3049} } @article{MTMT:34628200, title = {Stabilization of polyethylene with grape pomace extract: Effect of natural oil content}, url = {https://m2.mtmt.hu/api/publication/34628200}, author = {Takács, Kata and Slezák, Emese and Pregi, Emese and Plachi, D. and Vági, Erika and Renkeczné Tátraaljai, Dóra and Pukánszky, Béla}, doi = {10.1016/j.polymdegradstab.2024.110678}, journal-iso = {POLYM DEGRAD STABIL}, journal = {POLYMER DEGRADATION AND STABILITY}, volume = {221}, unique-id = {34628200}, issn = {0141-3910}, abstract = {The winery waste of a white grape was extracted in two different ways to produce extracts, one containing the natural oil of the waste and one without it; the goal of the work was to determine the positive or negative influence of the natural oil content of the extract on its stabilization effect and efficiency. The polyphenol content of the extracts was moderate, but their DPPH assay proved their antioxidant effect. The two extracts were added to polyethylene in concentrations between 0 and 2000 ppm, and their stabilizing efficiency was determined in multiple extrusion experiments. The extracts stabilized polyethylene adequately; their efficiency was only slightly smaller than that of the commercial hindered phenolic antioxidant, Irganox 1010. The solubility of the extracts in PE is much larger, 280 ppm, than that of a flavonoid-type natural antioxidant, quercetin (15 ppm). The presence of the oil had only a slight effect on stabilization efficiency, and its influence on properties is more beneficial than harmful. It decreases interactions among polyphenol molecules, improves the processability of the polymer, and increases homogeneity slightly. Accordingly, an extraction step can be saved during the preparation of the product, thus offering an economic advantage. © 2024 The Author(s)}, keywords = {EXTRACTION; COLOR; antioxidants; EFFICIENCY; STABILIZATION; Solubility; Solubility; polyphenols; polyphenols; Polyethylenes; wine; LONG-TERM STABILITY; Long term stability; MELT STABILIZATION; MELT STABILIZATION; grape pomace extract; grape pomace extract; grape pomace; DPPH assay; DPPH assay; winery wastes; Oil contents; natural oil; Inherent stability; Inherent stability}, year = {2024}, eissn = {1873-2321} }