Zobrazeno 1 - 10
of 247
pro vyhledávání: '"Waldemar Maniukiewicz"'
Autor:
Daria Dendek, Mateusz Zakrzewski, Radosław Ciesielski, Adam Kedziora, Waldemar Maniukiewicz, Małgorzata Szynkowska-Jóźwik, Tomasz Maniecki
Publikováno v:
Molecules, Vol 29, Iss 12, p 2857 (2024)
The impact of heterogeneous catalytic systems, which are based on rare earth metals, on the properties of biodiesel produced via the transesterification process in a stationary reactor (autoclave) was thoroughly investigated. The physicochemical attr
Externí odkaz:
https://doaj.org/article/b2725f05559e47cd890d3bac00fee30b
Autor:
Łukasz Szkudlarek, Karolina Chałupka-Śpiewak, Waldemar Maniukiewicz, Jadwiga Albińska, Małgorzata Iwona Szynkowska-Jóźwik, Paweł Mierczyński
Publikováno v:
Catalysts, Vol 14, Iss 4, p 260 (2024)
This work focuses on the study of biodiesel production from commercial rapeseed oil and methanol via transesterification reactions on monometallic copper and bimetallic copper–noble metal (platinum, ruthenium) catalysts supported on BEA zeolite. Th
Externí odkaz:
https://doaj.org/article/2e478fc5cb9946f88f809a1f7cbee737
Autor:
Łukasz Szkudlarek, Karolina Chałupka-Śpiewak, Waldemar Maniukiewicz, Magdalena Nowosielska, Małgorzata Iwona Szynkowska-Jóźwik, Paweł Mierczyński
Publikováno v:
International Journal of Molecular Sciences, Vol 25, Iss 7, p 3570 (2024)
Alkaline earth metal oxide (MgO, CaO, SrO) catalysts supported on BEA zeolite were prepared by a wet impregnation method and tested in the transesterification reaction of rapeseed oil with methanol towards the formation of biodiesel (FAMEs—fatty ac
Externí odkaz:
https://doaj.org/article/ab19016d5fc8404ca6ff431ce607dfd1
Autor:
Iwona Kuźniarska-Biernacka, Barbara Garbarz-Glos, Elżbieta Skiba, Waldemar Maniukiewicz, Marta Monteiro, Wojciech Bąk, Dariusz Szydłowski, Cristina Freire
Publikováno v:
Molecules, Vol 29, Iss 7, p 1416 (2024)
This work is focused on the application of lanthanide-free perovskite Ba1−xSrxTiO3 (0 < x < 1) in valorization of toxic pollutants as 4-nitrophenol (4-NPh). The series of perovskites were fabricated by facile, one-step solid-state preparation metho
Externí odkaz:
https://doaj.org/article/a5b8cf91281141e3bd5aa8a0bfe02e19
Autor:
Anna Sykuła, Agnieszka Bodzioch, Adriana Nowak, Waldemar Maniukiewicz, Sylwia Ścieszka, Lidia Piekarska-Radzik, Elżbieta Klewicka, Damian Batory, Elżbieta Łodyga-Chruścińska
Publikováno v:
Molecules, Vol 28, Iss 19, p 6893 (2023)
The encapsulation of insoluble compounds can help improve their solubility and activity. The effects of cyclodextrin encapsulation on hesperetin’s derivatives (HHSB, HIN, and HTSC) and the physicochemical properties of the formed complexes were det
Externí odkaz:
https://doaj.org/article/c01a9751c2034c6c8782bf027bfa0f58
Autor:
Tim Reilly, Pawel Mierczynski, Andri Suwanto, Satriyo Krido Wahono, Waldemar Maniukiewicz, Krasimir Vasilev, Keren Bindon, Agnieszka Mierczynska-Vasilev
Publikováno v:
Australian Journal of Grape and Wine Research, Vol 2023 (2023)
Background and Aims. Tartrate stabilisation is a necessary step in commercial wine production. The traditional method to prevent crystallisation and precipitation of potassium bitartrate (KHT) after a wine is bottled is by adding seed KHT crystals to
Externí odkaz:
https://doaj.org/article/d35db3f4288d4bcf873d117fc8af32ce
Autor:
Paweł Mierczyński, Bartosz Dawid, Agnieszka Mierczynska-Vasilev, Waldemar Maniukiewicz, Izabela Witońska, Krasimir Vasilev, Malgorzata I. Szynkowska-Jóźwik
Publikováno v:
Catalysis Communications, Vol 172, Iss , Pp 106559- (2022)
The main objective of this work was to study the physicochemical and catalytic properties of bimetallic supported catalysts [1%M-Fe/Al2O3-Cr2O3 (2:1) (M = Ru, Au, Pt, Pd)] in Fischer-Tropsch synthesis. Furthermore, the study investigated the effect o
Externí odkaz:
https://doaj.org/article/7c2626f4e0b444c093422a90301f5608
Autor:
Artem Kaporov, Oleksandr Shtyka, Radoslaw Ciesielski, Adam Kedziora, Waldemar Maniukiewicz, Malgorzata Szynkowska-Jozwik, Yelubay Madeniyet, Tomasz Maniecki
Publikováno v:
Materials, Vol 16, Iss 8, p 3180 (2023)
The investigation of the course of the Boudouard reaction and methane cracking was performed over nickel catalysts based on oxides of calcium, aluminum, and magnesium. The catalytic samples were synthesized by the impregnation method. The physicochem
Externí odkaz:
https://doaj.org/article/a7b30254de0043659a0427d361563089
Autor:
Paweł Mierczyński, Agnieszka Mierczyńska-Vasilev, Waldemar Maniukiewicz, Krasimir Vasilev, Małgorzata Szynkowska-Jóźwik
Publikováno v:
Catalysts, Vol 13, Iss 3, p 533 (2023)
In this study, multi-walled carbon nanotubes (MWCNTs) were prepared by chemical vapour deposition (CVD) using acetylene as a carbon source over an iron catalyst. As-prepared MWCNTs were used to support modern mono-copper, palladium, and bimetallic pa
Externí odkaz:
https://doaj.org/article/ec26ff8ebf084fc78aab8cd4d3913e32
Autor:
Katarzyna Justyna, Joanna Małolepsza, Damian Kusy, Waldemar Maniukiewicz, Katarzyna M. Błażewska
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 16, Iss 1, Pp 1436-1446 (2020)
The McKenna reaction is a well-known and popular method for the efficient and mild synthesis of organophosphorus acids. Bromotrimethylsilane (BTMS) is the main reagent in this reaction, which transforms dialkyl phosphonate esters into bis(trimethylsi
Externí odkaz:
https://doaj.org/article/fae351d4fa274e52b0513133490cb883