Počet záznamů: 1
Nanostructured manganese oxides as highly active catalysts for enhanced hydrolysis of bis(4-nitrophenyl)phosphate and catalytic decomposition of methanol
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SYSNO ASEP 0541518 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Nanostructured manganese oxides as highly active catalysts for enhanced hydrolysis of bis(4-nitrophenyl)phosphate and catalytic decomposition of methanol Tvůrce(i) Šťastný, Martin (UACH-T) SAI, RID
Issa, G. (BG)
Popelková, Daniela (UACH-T) SAI
Ederer, J. (CZ)
Kormunda, M. (CZ)
Kříženecká, S. (CZ)
Henych, Jiří (UACH-T) SAI, RID, ORCIDCelkový počet autorů 7 Zdroj.dok. Catalysis Science &Technology. - : Royal Society of Chemistry - ISSN 2044-4753
Roč. 11, č. 5 (2021), s. 1766-1779Poč.str. 14 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova Ammonia ; Carbon monoxide ; Redox reactions ; X ray photoelectron spectroscopy Vědní obor RIV CA - Anorganická chemie Obor OECD Inorganic and nuclear chemistry CEP LM2018124 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Omezený přístup Institucionální podpora UACH-T - RVO:61388980 UT WOS 000629000400010 EID SCOPUS 85103068105 DOI 10.1039/d0cy02112a Anotace Manganese oxide-based (MnO ) catalysts have received increasing attention due to their low cost, low toxicity, and the ability to degrade organic molecules under mild conditions. In this work, several nanostructured MnObased catalysts were preparedviaredox reactions of manganese compounds in an aqueous solution and alkaline precipitation with aqueous ammonia. A wide arsenal of analytical techniques, including nitrogen physisorption (BJH and BET), X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), temperature-programmed reduction (H2-TPR), X-ray photoelectron spectroscopy (XPS), X-ray fluorescence (XRF), and Raman spectroscopy were applied for their characterization. The nanostructured MnO exhibited high catalytic activity in hydrolysis of phosphate diester-based substrate bis(4-nitrophenyl)phosphate (BNPP) at 328 K. Furthermore, MnO specimens were also studied in decomposition of methanol to carbon monoxide and hydrogen as a potential alternative fuel. The results show high dependency of the materials catalytic properties on the synthesis method. It was found that the varying fractions of redox-active Mn /Mn /Mn surface sites and the high proportion of oxygen species (such as O or O ) together with the particle dispersion and morphology are important for high catalytic activity of MnO in both investigated catalytic reactions. Based on the experimental data, possible mechanisms of BNPP hydrolysis and methanol decomposition were proposed and discussed in detail. Pracoviště Ústav anorganické chemie Kontakt Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Rok sběru 2022 Elektronická adresa https://doi.org/10.1039/D0CY02112A
Počet záznamů: 1