Zobrazeno 1 - 10
of 72
pro vyhledávání: '"Rodica Zăvoianu"'
Autor:
Ana Paula Soares Dias, Bruna Rijo, Manuel Francisco Costa Pereira, Rodica Zăvoianu, Octavian Dumitru Pavel
Publikováno v:
Reactions, Vol 5, Iss 1, Pp 260-273 (2024)
Bioethanol, which is currently produced commercially from a growing variety of renewable biomass and waste sources, is an appealing feedstock for the production of fuels and chemicals. The literature clearly shows that bioethanol is a versatile build
Externí odkaz:
https://doaj.org/article/36d50580ceff4b30a08d12b9e8ab06a9
Autor:
Bruna Rijo, Ana Paula Soares Dias, Novi Dwi Saksiwi, Manuel Francisco Costa Pereira, Rodica Zăvoianu, Octavian Dumitru Pavel, Olga Ferreira, Rui Galhano dos Santos
Publikováno v:
Reactions, Vol 4, Iss 2, Pp 295-310 (2023)
The modern society produces large amounts of household waste with high organic matter content. The vermicomposting of household waste produces high-value humic substances and is a way to stabilize organic material for later use as raw material (3rd g
Externí odkaz:
https://doaj.org/article/f94c9f837d8043a49b8b4bcb342de52b
Autor:
Ana-Lorena Neagu, Anamaria Zaharia, Octavian Dumitru Pavel, Alina Tîrşoaga, Iulia Elena Neblea, Sorin Viorel Dolana, Carmen Elena Ţebrencu, Tanta-Verona Iordache, Andrei Sârbu, Rodica Zăvoianu
Publikováno v:
Pharmaceutics, Vol 15, Iss 7, p 1888 (2023)
This work focuses on the synergetic effect obtained by immobilization of Rhamnus frangula L. (RfL) phytoextract in layered double hydroxides (LDHs) matrixes and their subsequent encapsulation into biocompatible hydrogels (HG). In this respect, the LD
Externí odkaz:
https://doaj.org/article/08bc3bdc3bb643dda59f90e90efdf8c2
Autor:
Bogdan Cojocaru, Bogdan Ciprian Jurca, Rodica Zăvoianu, Ruxandra Bîrjega, Vasile I. Pârvulescu, Octavian Dumitru Pavel
Publikováno v:
Catalysis Communications, Vol 170, Iss , Pp 106485- (2022)
Tetramethylammonium- and tetrabutylammonium-hydroxides operate as alternative bases to the traditional inorganic ones for the LDH structures synthesis with controlled texture. This is valuable for both co-precipitation and mechano-chemical routes, wh
Externí odkaz:
https://doaj.org/article/d0833a6440b04d8eae4808f96a0aabc5
Autor:
Octavian Dumitru Pavel, Alexandra-Elisabeta Stamate, Rodica Zăvoianu, Anca Cruceanu, Alina Tirsoaga, Ruxandra Bîrjega, Ioana Andreea Brezeștean, Alexandra Ciorîță, Daniela Cristina Culiță, Ana Paula Soares Dias
Publikováno v:
Materials, Vol 16, Iss 8, p 3025 (2023)
This paper is focused on the utilization of hybrid catalysts obtained from layered double hydroxides containing molybdate as the compensation anion (Mo-LDH) and graphene oxide (GO) in advanced oxidation using environmentally friendly H2O2 as the oxid
Externí odkaz:
https://doaj.org/article/fb0cf5aa44a843c492cec335d61bfcf4
Autor:
Rodica Zăvoianu, Mădălina Tudorache, Vasile I. Parvulescu, Bogdan Cojocaru, Octavian D. Pavel
Publikováno v:
Molecules, Vol 27, Iss 23, p 8391 (2022)
A rapid, cheap and feasible new approach was used to synthesize the Mg0.375Fe0.375Al0.25-LDH in the presence of tetramethylammonium hydroxide (TMAH), as a nontraditional hydrolysis agent, applying both mechano-chemical (MC) and co-precipitation metho
Externí odkaz:
https://doaj.org/article/379c10a620334d41847a22c29f4a7588
Autor:
Rodica Zăvoianu, Silvana-Denisa Mihăilă, Bogdan Cojocaru, Mădălina Tudorache, Vasile I. Pârvulescu, Octavian Dumitru Pavel, Solon Oikonomopoulos, Elisabeth Egholm Jacobsen
Publikováno v:
Catalysts, Vol 12, Iss 7, p 759 (2022)
Using organic-base tetramethylammonium hydroxide (TMAH) is a viable, cheap, and fast option for the synthesis of MgZnAl-LDH-type materials by both co-precipitation and mechano-chemical methods. TMAH presents several advantages, such as the smaller qu
Externí odkaz:
https://doaj.org/article/42e0246a10b84ae78eabd4a9287328d1
Autor:
Rodica Zăvoianu, Anca Cruceanu, Octavian Dumitru Pavel, Corina Bradu, Mihaela Florea, Ruxandra Bîrjega
Publikováno v:
Catalysts, Vol 12, Iss 2, p 145 (2022)
This contribution concerns the effect of the chemical composition of the brucite-type layer of bi-cationic LDH materials ZnxAl and MgxAl (x = 2–5) and tri-cationic LDH MgyZnzAl (y + z = 4, y = 1, 2, 3) on their catalytic activity for olefin epoxida
Externí odkaz:
https://doaj.org/article/63b06750f4d04417978b1b82a8bd6207
Autor:
Alexandra-Elisabeta Stamate, Octavian Dumitru Pavel, Rodica Zăvoianu, Ioana Brezeştean, Alexandra Ciorȋță, Ruxandra Bȋrjega, Katja Neubauer, Angela Koeckritz, Ioan-Cezar Marcu
Publikováno v:
Materials, Vol 14, Iss 23, p 7457 (2021)
The combination of layered double hydroxides (LDH) with graphene oxide (GO) enables the formation of nanohybrids with improved properties. This work focuses on the structural and catalytic properties of Ce-containing MgAl LDH-GO composites bearing di
Externí odkaz:
https://doaj.org/article/7ccc0026a33446a8b3e68f055af89863
Autor:
Alexandra-Elisabeta Stamate, Rodica Zăvoianu, Octavian Dumitru Pavel, Ruxandra Birjega, Andreea Matei, Marius Dumitru, Ioana Brezeștean, Mariana Osiac, Ioan-Cezar Marcu
Publikováno v:
Molecules, Vol 26, Iss 20, p 6191 (2021)
Mechanical activation and mechanochemical reactions are the subjects of mechanochemistry, a special branch of chemistry studied intensively since the 19th century. Herein, we comparably describe two synthesis methods used to obtain the following laye
Externí odkaz:
https://doaj.org/article/488fa60f2a4a46859792a2a2cd7ccd99