Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Alexandru Chirieac"'
Autor:
Carmen Ciotonea, Alexandru Chirieac, Brindusa Dragoi, Cezar Catrinescu, Sébastien Royer, Adrian Ungureanu
Publikováno v:
Comptes Rendus. Chimie. 25:81-94
Autor:
Alexandru Chirieac, Sandrine Arii-Clacens, Brandusa Dragoi, Jérémy Dhainaut, Adrian Ungureanu, Sébastien Royer, Emil Dumitriu, Carmen Ciotonea, Maya Marinova, Stéphane Pronier, Jean-Philippe Dacquin
Publikováno v:
Applied Catalysis A : General
Applied Catalysis A : General, Elsevier, 2021, Applied Catalysis A: General, 623, pp.118303. ⟨10.1016/j.apcata.2021.118303⟩
Applied Catalysis A : General, 2021, Applied Catalysis A: General, 623, pp.118303. ⟨10.1016/j.apcata.2021.118303⟩
Applied Catalysis A : General, Elsevier, 2021, Applied Catalysis A: General, 623, pp.118303. ⟨10.1016/j.apcata.2021.118303⟩
Applied Catalysis A : General, 2021, Applied Catalysis A: General, 623, pp.118303. ⟨10.1016/j.apcata.2021.118303⟩
International audience; The preparation of supported bimetallic materials based on transition metals has attracted much interest since their use as catalysts towards hydrogenation processes for the production of fine chemicals or environmental depoll
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::309d420d18e8718006bfbbec66174ec3
http://hdl.handle.net/20.500.12210/55805
http://hdl.handle.net/20.500.12210/55805
Autor:
Emil Dumitriu, Cezar Catrinescu, Alexandru Chirieac, Adrian Ungureanu, Carmen Ciotonea, Sabine Petit, Irina Mazilu, Sébastien Royer, Eric Marceau
Publikováno v:
Applied Catalysis A : General
Applied Catalysis A : General, 2020, 598, pp.117615. ⟨10.1016/j.apcata.2020.117615⟩
Applied Catalysis A : General, Elsevier, 2020, 598, pp.117615. ⟨10.1016/j.apcata.2020.117615⟩
Applied Catalysis A : General, 2020, 598, pp.117615. ⟨10.1016/j.apcata.2020.117615⟩
Applied Catalysis A : General, Elsevier, 2020, 598, pp.117615. ⟨10.1016/j.apcata.2020.117615⟩
International audience; Copper is active in hydrogenation reactions, but it is a base metal difficult to disperse inside mesostructured supports, with adverse consequences on the catalytic properties. Incorporating aluminium into mesoporous SBA-15 si
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d70333419d129fd3a35df6166c362b91
https://hal.science/hal-03001100/document
https://hal.science/hal-03001100/document
Autor:
Irina Mazilu, Emil Dumitriu, Alexandru Chirieac, Fatima Abi-Ghaida, Brandusa Dragoi, Adrian Ungureanu, Constantin Rudolf, Ahmad Mehdi
Publikováno v:
Environmental Engineering and Management Journal
Environmental Engineering and Management Journal, "Gheorghe Asachi" Technical University of Iaşi, 2015, ⟨10.30638/eemj.2015.041⟩
Environmental Engineering and Management Journal, "Gheorghe Asachi" Technical University of Iaşi, 2015, ⟨10.30638/eemj.2015.041⟩
Copper nanoparticles were successfully synthesized on polyether-functionalized mesoporous silica to investigate the effect of metal loading (10, 25 and 35 wt. % Cu) on their structural and catalytic properties. The oxide forms of these nanocomposite
Autor:
Brindusa Dragoi, Irina Mazilu, Emil Dumitriu, Sébastien Royer, Cezar Catrinescu, Sabine Petit, Carmen Ciotonea, Alexandru Chirieac, Adrian Ungureanu
Publikováno v:
Microporous and Mesoporous Materials
Microporous and Mesoporous Materials, 2017, 241, pp.326-337. ⟨10.1016/j.micromeso.2016.12.024⟩
Microporous and Mesoporous Materials, Elsevier, 2017, 241, pp.326-337. ⟨10.1016/j.micromeso.2016.12.024⟩
Microporous and Mesoporous Materials, 2017, 241, pp.326-337. ⟨10.1016/j.micromeso.2016.12.024⟩
Microporous and Mesoporous Materials, Elsevier, 2017, 241, pp.326-337. ⟨10.1016/j.micromeso.2016.12.024⟩
Iron and iron-aluminium containing ordered SBA-15 silica catalysts were synthesized for the first time at relatively high iron content (Si/Fe molar ratio down to ∼21) using an adapted two-step pH-adjustment approach needed for the incorporation of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c378cd5ee0f7a528e1dc4a55578dc0ec
https://hal.science/hal-01630974
https://hal.science/hal-01630974
Autor:
Eric Marceau, Brindusa Dragoi, Emil Dumitriu, Alexandru Chirieac, Sébastien Royer, Irina Mazilu, Adrian Ungureanu, Carmen Ciotonea
Publikováno v:
Catalysis Science & Technology
Catalysis Science & Technology, 2017, 7 (22), pp.5376-5385. ⟨10.1039/C7CY01015J⟩
Catalysis Science & Technology, Royal Society of Chemistry, 2017, 7 (22), pp.5376-5385. ⟨10.1039/C7CY01015J⟩
Catalysis Science & Technology, 2017, 7 (22), pp.5376-5385. ⟨10.1039/C7CY01015J⟩
Catalysis Science & Technology, Royal Society of Chemistry, 2017, 7 (22), pp.5376-5385. ⟨10.1039/C7CY01015J⟩
Copper (oxide) nanoparticles with dispersion and size ranging from highly dispersed nanoparticles confined within the intra-wall pores to nanoparticles confined within the main mesopores can be simply produced via incipient wetness impregnation by us
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f1aa33ae9b1c36e8bdc2c0fb567e3a4f
https://hal.science/hal-01782942
https://hal.science/hal-01782942
Autor:
Anne-Sophie Mamede, Emil Dumitriu, Alexandru Chirieac, Carmen Ciotonea, Sébastien Royer, Adrian Ungureanu, Brindusa Dragoi, Irina Mazilu, Italo Ferino, Elisabetta Rombi
Publikováno v:
Journal of Catalysis
Journal of Catalysis, Elsevier, 2016, 339, pp.270-283. ⟨10.1016/j.jcat.2016.04.004⟩
Journal of Catalysis, 2016, 339, pp.270-283. ⟨10.1016/j.jcat.2016.04.004⟩
Journal of Catalysis, Elsevier, 2016, 339, pp.270-283. ⟨10.1016/j.jcat.2016.04.004⟩
Journal of Catalysis, 2016, 339, pp.270-283. ⟨10.1016/j.jcat.2016.04.004⟩
Here, we show a strategy to control the dispersion, spatial distribution, and stabilization of copper-based nanoparticles on a micro–mesoporous silica support, as well as their impact on the catalytic activity. In this respect, SBA-15 with P123 occ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d56d7629604893d727f758527f3fd72d
https://hal.archives-ouvertes.fr/hal-01782684
https://hal.archives-ouvertes.fr/hal-01782684
Autor:
Alexandru Chirieac, Sébastien Royer, Brandusa Dragoi, Adrian Ungureanu, Emil Dumitriu, Carmen Ciotonea, Sabine Petit
Publikováno v:
Microporous and Mesoporous Materials
Microporous and Mesoporous Materials, Elsevier, 2016, 224, pp.176-189. ⟨10.1016/j.micromeso.2015.11.028⟩
Microporous and Mesoporous Materials, 2016, 224, pp.176-189. ⟨10.1016/j.micromeso.2015.11.028⟩
Microporous and Mesoporous Materials, Elsevier, 2016, 224, pp.176-189. ⟨10.1016/j.micromeso.2015.11.028⟩
Microporous and Mesoporous Materials, 2016, 224, pp.176-189. ⟨10.1016/j.micromeso.2015.11.028⟩
Different solvents (i.e., water, hexane-water mixture and ethanol) are used as dilution media for metal nitrate precursors. It was demonstrated that the interplay between the properties of the solvent and the particularities of the SBA-15 scaffold is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e03a9c14bf54669f7b94ad76a21d0de3
https://hal.archives-ouvertes.fr/hal-01523524
https://hal.archives-ouvertes.fr/hal-01523524
Autor:
Alexandru Chirieac, Emil Dumitriu, Brindusa Dragoi, Alina Moscu Corcodel, Adrian Ungureanu, Constantin Rudolf, Alexandra Sasu
Publikováno v:
Environmental Engineering and Management Journal. 11:47-54
The purpose of this study was to prepare new nanocomposite catalysts of Metal/LDHs type by mild reduction of transition metal cations Co 2+ and Cu 2+ substituted in the matrix of ZnAl-LDH at 150°C and atmospheric pressure, under hydrogen flow. To th
Autor:
Sébastien Royer, Brindusa Dragoi, Alexandru Chirieac, Adrian Ungureanu, Constantin Rudolf, Emil Dumitriu, Carmen Ciotonea
Publikováno v:
Applied Catalysis A : General
Applied Catalysis A : General, Elsevier, 2015, 504 pp. 92-102 ⟨10.1016/j.apcata.2014.11.016⟩
Applied Catalysis A : General, Elsevier, 2015, 504 pp. 92-102 ⟨10.1016/j.apcata.2014.11.016⟩
International audience; Herein, a way to generate mono- and bi-metallic copper and/or nickel nanoparticles by the direct reduction of Mg(Ni)CuAl-layered double hydroxide (LDH) precursors is reported. Cu and Ni with various molar ratios (0:1,1:4,1:1,4
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::786f315a43dcb13038277ab457671240
https://hal.archives-ouvertes.fr/hal-01334161
https://hal.archives-ouvertes.fr/hal-01334161