Zobrazeno 1 - 10
of 54
pro vyhledávání: '"Stanisław Kowalak"'
Autor:
Jolanta Kowalska-Kuś, Anna Malaika, Agnieszka Held, Aldona Jankowska, Ewa Janiszewska, Michał Zieliński, Krystyna Nowińska, Stanisław Kowalak, Klaudia Końska, Krzysztof Wróblewski
Publikováno v:
Molecules, Vol 29, Iss 17, p 4102 (2024)
Solketal, a widely used glycerol-derived solvent, can be efficiently synthesized through heterogeneous catalysis, thus avoiding the significant product losses typically encountered with aqueous work-up in homogeneous catalysis. This study explores th
Externí odkaz:
https://doaj.org/article/f5c17787037049c6a28fe08a5f20f7a0
Autor:
Agata Tabero, Aldona Jankowska, Adam Ostrowski, Ewa Janiszewska, Jolanta Kowalska-Kuś, Agnieszka Held, Stanisław Kowalak
Publikováno v:
Molecules, Vol 29, Iss 13, p 3239 (2024)
Imidazole molecules entrapped in porous materials can exhibit high and stable proton conductivity suitable for elevated temperature (>373 K) fuel cell applications. In this study, new anhydrous proton conductors based on imidazole and mesoporous KIT-
Externí odkaz:
https://doaj.org/article/97749c2d794d4bc9968f6d9ac55d8cc6
Publikováno v:
Molecules, Vol 28, Iss 21, p 7312 (2023)
The present work concerns proton-conducting composites obtained by replacing the water molecules present in aluminophosphate and silicoaluminophosphate AFI-type molecular sieves (AlPO-5 and SAPO-5) with azole molecules (imidazole or 1,2,4-triazole).
Externí odkaz:
https://doaj.org/article/af43dd4c3b2746319750348936d01208
Publikováno v:
Microporous and Mesoporous Materials. 274:33-42
Imidazole entrapped in H-forms of FAU zeolites with various Si/Al ratios (1, 4, 40) exhibit high and stable proton conductivity (up to ∼10−3 S/cm) in a broad range of temperatures (293–393 K). The conductivity increases with temperature and imi
Publikováno v:
Chemical Communications. 53:2475-2478
Imidazole embedded in molecular sieves shows remarkable and steady proton conductivity (>1 × 10−5 S cm−1 above 360 K). It can be considered to be a promising solid high proton conducting electrolyte for fuel cells. The conductivity depends on im
Autor:
Stanisław Kowalak, Ewa Janiszewska
Publikováno v:
New Journal of Chemistry. 41:2955-2963
Mesoporous silica was prepared with the use of low-cost and environmentally friendly sucrose as a porogeneous agent. It was found that the presence of sucrose as well as the products of its chemical transformation upon the synthesis procedure (i.e.,
Autor:
Stanisław Kowalak, Jacek Gapiński, Benjamin Ménard, Clément Anfray, Svetlana Mintova, Małgorzata Łukarska, Samuel Valable, Aldona Jankowska
Publikováno v:
Microporous and Mesoporous Materials
Microporous and Mesoporous Materials, Elsevier, 2016, 236, pp.79-84. ⟨10.1016/j.micromeso.2016.02.043⟩
Microporous and Mesoporous Materials, 2016, 236, pp.79-84. ⟨10.1016/j.micromeso.2016.02.043⟩
Microporous and Mesoporous Materials, Elsevier, 2016, 236, pp.79-84. ⟨10.1016/j.micromeso.2016.02.043⟩
Microporous and Mesoporous Materials, 2016, 236, pp.79-84. ⟨10.1016/j.micromeso.2016.02.043⟩
Fluorescein was entrapped inside FAU type zeolite (Y) by generating it from resorcinol and phthalic anhydride. Prior to the formation of fluorescein, zeolite Y was modified with various cations (H, Zn, Ce, Na, K). The modified zeolite acted as cataly
Autor:
K. Nowińska, Stanisław Kowalak, Kinga Góra-Marek, Jolanta Kowalska-Kuś, A.M. Szymocha, Ewa Janiszewska
Post-synthesis modification of silicalite-1 (MFI) with solutions of ammonium compounds (NH4F, NH4Cl, NH4NO3, NH4OH) without any additional alkaline agent followed by further thermal treatment appeared a new, facile, and cheap method to generate the a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e93082cd58b62421bd0d9c04548a4ce6
https://ruj.uj.edu.pl/xmlui/handle/item/86078
https://ruj.uj.edu.pl/xmlui/handle/item/86078
Publikováno v:
RSC advances. 9(9)
V-containing silica SBA-3 mesoporous catalysts were prepared by means of one-pot hydrothermal procedure with NH4VO3 or VOSO4 as vanadium precursors under various acidic medium of the reaction mixture (pH 5 wt%) exhibited the presence of isolated vana
Autor:
Benjamin Ménard, Clément Anfray, Aldona Jankowska, Svetlana Mintova, Jacek Gapiński, M. Łukarska, Samuel Valable, Stanisław Kowalak
Publikováno v:
Microporous and Mesoporous Materials
Microporous and Mesoporous Materials, Elsevier, 2018, 260, pp.70--75. ⟨10.1016/j.micromeso.2017.10.040⟩
Microporous and Mesoporous Materials, Elsevier, 2018, 260, pp.70--75. ⟨10.1016/j.micromeso.2017.10.040⟩
Fluorescein (F) species were encapsulated inside nanosized zeolites L and Y by their synthesis from adsorbed precursors (phthalic anhydride (Ph) and resorcinol (R)). The applied nanozeolites were modified either with H+ or Zn2+ cations and they playe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af8c3dbe91bbf293b6140b1147e9032d
https://hal.archives-ouvertes.fr/hal-01840129
https://hal.archives-ouvertes.fr/hal-01840129