Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Urszula Ulkowska"'
Publikováno v:
Molecules, Vol 29, Iss 13, p 3180 (2024)
A new type of catalyst containing magnesium oxide modified with various modifiers ranging from bromine and iodine, to interhalogen compounds, hydrohalogenic acids, and alkyl halides have been prepared using chemical vapor deposition (CVD) and wet imp
Externí odkaz:
https://doaj.org/article/9e44f8c68ba8412cbc55848742941ec6
Autor:
Paulina Piotrkiewicz, Urszula Ulkowska, Michal Kukielski, Justyna Zygmuntowicz, Ireneusz Szachogluchowicz, Marcin Wachowski, Justyna Tomaszewska, Radosław Żurowski
Publikováno v:
Ceramics International. 48:11678-11695
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::729c36f51f58972656fbc0bbda7e785e
https://doi.org/10.1016/j.ceramint.2022.01.026
https://doi.org/10.1016/j.ceramint.2022.01.026
Autor:
Marek Gliński, Urszula Ulkowska
Publikováno v:
Journal of Flow Chemistry. 11:87-90
We present an experiment offered as a course for undergraduate students at our Faculty. During the laboratory classes, students synthesized 20%wtMnO2/Al2O3catalyst, which is then used in the catalytic reaction—the propionic acid ketonization leadin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::78cd00a0780913be2601777a972faea7
https://doi.org/10.1007/s41981-021-00149-2
https://doi.org/10.1007/s41981-021-00149-2
Autor:
Marek Gliński, Agnieszka Czajka, Urszula Ulkowska, Ewa M. Iwanek (nee Wilczkowska), Dariusz Łomot, Zbigniew Kaszkur
Publikováno v:
Catalysts; Volume 12; Issue 12; Pages: 1595
In this study, magnesium nitrate, chloride or sulphate were used in the synthesis of Mg(OH)2, the precursor of MgO. It was found that the counter ion strongly influences the purity of the Mg(OH)2, as well as the specific surface area of the obtained
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::18fa345ebd32b5d0ae1875755a16cb77
https://doi.org/10.3390/catal12121595
https://doi.org/10.3390/catal12121595
Autor:
Osazuwa Osawaru, Sandra Żmuda, Urszula Ulkowska, Marek Marczewski, Monika Aleksandrowicz, Mateusz Rychlik, Ewelina Brzezińska, Marek Gliński, Maja Podlewska
Publikováno v:
Reaction Kinetics, Mechanisms and Catalysis. 126:1081-1096
The measurements of the minimum acid strength (HOmin) required for the initiation of cis-stilbene at 303 K and tert-butylbenzene at 313 K, 323 K and 333 K have enabled the establishment of a much more precise acid strength scale based on test reactio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ca7f36134f575abc87ab4a89bd6adc09
https://doi.org/10.1007/s11144-019-01551-7
https://doi.org/10.1007/s11144-019-01551-7
Publikováno v:
Reaction Kinetics, Mechanisms and Catalysis. 126:199-217
The decomposition of diacetone alcohol to acetone proceeding at 303 K as well as the Cannizzaro transformation of benzaldehyde at 323 K leading to benzyl alcohol, can be regarded as useful test reactions in investigating the basic properties of solid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::002811a713cd7025c2220ce3a4826c33
https://doi.org/10.1007/s11144-018-1492-z
https://doi.org/10.1007/s11144-018-1492-z
Autor:
Urszula Ulkowska, Marek Gliński
Publikováno v:
Applied Catalysis A: General. 554:117-124
The vapour-phase catalytic transfer hydrogenation (CTH) of fifteen acyclic α,β-unsaturated carbonyl compounds, i.e. ten aldehydes and five ketones, with ethanol or 2-propanol as hydrogen donors has been studied over pure MgO as the catalyst. The ob
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb407f5a5b4685fe236b979e603575e5
https://doi.org/10.1016/j.apcata.2018.02.001
https://doi.org/10.1016/j.apcata.2018.02.001
Publikováno v:
Surface and Interface Analysis. 49:945-952
The activity of iodine-modified MgO in transfer hydrogenation of acrolein with alcohols can be significantly higher than that of unmodified MgO. Data from literature and our previous studies indicate that the initial source of a halide influences the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85a673a0ceb1a59eb8b8431b6ed0f307
https://doi.org/10.1002/sia.6248
https://doi.org/10.1002/sia.6248
Autor:
Urszula Ulkowska, Marek Gliński
Publikováno v:
Applied Catalysis A: General. 511:131-140
This paper presents the first systematic thermodynamic study of the vapour phase transfer hydrogenation of α,β-unsaturated carbonyl compounds at temperatures: 423.15–723.15 K. Calculations were made for four compounds, namely: acrolein, α-methyl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3809379cb94f624b7fae915693b9c1b9
https://doi.org/10.1016/j.apcata.2015.11.046
https://doi.org/10.1016/j.apcata.2015.11.046
Publikováno v:
Surface and Interface Analysis. 47:1001-1008
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e983026c7f233a016b27dcacaa6a1b3
https://doi.org/10.1002/sia.5799
https://doi.org/10.1002/sia.5799