Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Katarzyna Stawicka"'
Publikováno v:
Materials, Vol 17, Iss 16, p 4041 (2024)
One of the current challenges is the reduction of sulfur emitted into the atmosphere, usually in the form of sulfur oxides generated by fossil fuel combustion. To achieve this goal, the sulfur content should be reduced in fuel. In this context, vanad
Externí odkaz:
https://doaj.org/article/0c70f760f9bb4ddabbf9d6a7da7f58b4
Publikováno v:
Catalysts, Vol 11, Iss 4, p 488 (2021)
Niobium containing SBA-15 was prepared by two methods: impregnation with different amounts of ammonium niobate(V) oxalate (Nb-15/SBA-15 and Nb-25/SBA-15 containing 15 wt.% and 25 wt.% of Nb, respectively) and mixing of mesoporous silica with Nb2O5 fo
Externí odkaz:
https://doaj.org/article/a40387bb2f7a473fb803707f50fc74a8
Autor:
Katarzyna Stawicka, Maria Ziolek
Publikováno v:
Molecules, Vol 25, Iss 20, p 4689 (2020)
Three different metal oxides (basic MgO, basic-acidic Al2O3 and acidic-basic Nb2O5) characterized by comparable surface areas (MgO—130 m2/g; Al2O3—172 m2/g and Nb2O5—123 m2/g) and pore systems (domination of mesopores with narrow pore size dist
Externí odkaz:
https://doaj.org/article/7aa6865b835a49eb9522e1518a974a3a
Autor:
Katarzyna Stawicka
Publikováno v:
Catalysis Today. 354:51-60
Mesoporous silica MCF and metalosilicates Nb/MCF-14 and Ce/MCF-14 were modified with anchoring of melamine followed by (3-chloropropyl)trimethoxysilane functionalization. The texture/structure parameters, chemical composition and surface properties o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::409119653b62e60e96e35c8c3b6c9e88
https://doi.org/10.1016/j.cattod.2019.09.013
https://doi.org/10.1016/j.cattod.2019.09.013
Publikováno v:
Catalysis Today. 325:2-10
Niobium and cerium dopants of mesoporous cellular foams, MCF, have been recently considered as promoters enhancing the basicity of amino-organosilanes anchored to the supports. Thus, the knowledge of acid-basic properties of niobium and cerium contai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::40fe7cc9461e8a1906080753cf9c03e8
https://doi.org/10.1016/j.cattod.2018.05.025
https://doi.org/10.1016/j.cattod.2018.05.025
Publikováno v:
Applied Catalysis A: General. 570:339-347
N-bromobenzyl substituted (E)-4′-hydroxy-4-stilbazolium bromide (NBSB), a representative of azastilbene compounds which reveals strong solvatochromism, was used as a probe molecule for testing basicity of nitrogen organic compounds grafted on mesop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d5ab634e760c764f1bebd5ac3abb9e9
https://doi.org/10.1016/j.apcata.2018.12.003
https://doi.org/10.1016/j.apcata.2018.12.003
Publikováno v:
Dalton transactions (Cambridge, England : 2003). 49(28)
Mesoporous silica of the SBA-15 type was used as a support for basic active centers generated by the incorporation of calcium species and (3-aminopropylo)trimethoxysilane (APTMS) or imidazole. The samples were characterized by low temperature N2 adso
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d536e9f8562fcf6a4cffe010118d58ea
https://pubmed.ncbi.nlm.nih.gov/32626866
https://pubmed.ncbi.nlm.nih.gov/32626866
Publikováno v:
Microporous and Mesoporous Materials. 258:41-54
The study was aimed at comparison of the stability and effectiveness of anchoring of the amine and sulfonic groups formed on mesoporous silica by the click reaction. The impact of silica dopant (niobium) and the structure of mesoporous silica (hexago
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e7e7b625abda4f74a2e956583bbf994f
https://doi.org/10.1016/j.micromeso.2017.09.005
https://doi.org/10.1016/j.micromeso.2017.09.005
Publikováno v:
Materials Chemistry and Physics. 273:125132
Novel sulfonic-acid-functionalized poly(F-STs-co-ST) copolymers based on fluorinated methylstyrenes and styrene were successfully synthesized via post-sulfonation method using chlorosulfonic acid (HSO3Cl) as a sulfonating agent. The as-prepared solid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73410dd96f59c5eaf35bda0bc3b0ca8d
https://doi.org/10.1016/j.matchemphys.2021.125132
https://doi.org/10.1016/j.matchemphys.2021.125132
Autor:
Maria Ziolek, Katarzyna Stawicka, Dorota Kryszak, Vanesa Calvino-Casilda, Rosa M. Martín-Aranda
Publikováno v:
Applied Catalysis A: General. 531:139-150
Mesoporous silicas and niobiosilicates of SBA-15 and MCF types were modified by anchoring of imidazole, characterized (XRD, N2 adsorption/desorption, XPS, TEM, UV–vis, FTIR, TG/DTA, TG/MS) and tested as catalysts in the Knoevenagel condensation bet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10dc78d8eb7342799ce47442f701810a
https://doi.org/10.1016/j.apcata.2016.10.028
https://doi.org/10.1016/j.apcata.2016.10.028