Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Emilian Angelescu"'
Publikováno v:
Comptes Rendus Chimie. 21:318-326
This contribution investigates the obtaining of layered double hydroxides (LDHs) modified with different concentrations of yttrium and the effect of the yttrium concentration and temperature during the rehydration of the mixed oxides derived from the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3dc66cbd957fbf24005dfb5884f3ab70
https://doi.org/10.1016/j.crci.2017.07.002
https://doi.org/10.1016/j.crci.2017.07.002
Publikováno v:
Applied Catalysis A: General. 542:10-20
Layered catalytic materials with a double hydroxide structure and Mg 2+ /(Al 3+ + La 3+ ) = 3 (Al 3+ /La 3+ molar ratio of 1) were prepared via co-precipitation and mechanochemical routes. In the second one, stoichiometric amounts of nitrates in mixt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0219e3713ad14b54dccaae3a6ac9b38
https://doi.org/10.1016/j.apcata.2017.05.012
https://doi.org/10.1016/j.apcata.2017.05.012
Autor:
Rodica Zăvoianu, Emilian Angelescu, Ioana Cristina Bucur, Octavian Dumitru Pavel, Alexandra-Elisabeta Stamate, Vasile I. Pârvulescu, Ruxandra Bîrjega
Publikováno v:
Applied Catalysis A: General. 605:117797
Y-modified LDHs with atomic Mg2+/(Al3++Y3+) of 3 and Al3+/Y3+ ratios of 0.5, 1 and 1.5 were prepared following two preparation methods, i.e. the co-precipitation and mechano-chemical one. The substitution of Al by Y in the brucite-type layer was less
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d66fec48c6ccc12ecace533ef157fea3
https://doi.org/10.1016/j.apcata.2020.117797
https://doi.org/10.1016/j.apcata.2020.117797
Autor:
Ruxandra Bîrjega, Rodica Ionescu, Octavian Dumitru Pavel, Mihaela Badea, Rodica Zăvoianu, Emilian Angelescu
Publikováno v:
Journal of Molecular Catalysis A: Chemical. 352:21-30
This paper presents aspects concerning the catalytic activity of several transition metal coordination polymers with the general formula 2 ∞ [Me(II)X 2 (4,4′bipyridine)] (Me(II) = Co, Ni, Cu; X = Cl − , CH 3 OCO − , and acetylacetonate) towar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::83c24402f01a827a836815893c0d4b00
https://doi.org/10.1016/j.molcata.2011.08.001
https://doi.org/10.1016/j.molcata.2011.08.001
Autor:
Ruxandra Bîrjega, Ana Paula Soares Dias, Octavian Dumitru Pavel, Rodica Zăvoianu, Emilian Angelescu, Anca Cruceanu
Publikováno v:
Reaction Kinetics, Mechanisms and Catalysis. 105:145-162
This contribution presents several aspects concerning the production and characterization of hydrotalcite-like compounds containing Mo-species in the interlayer region (Mo-HT), the corresponding derived mixed oxides (Mo-CHT) and their catalytic activ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f03f40d2fcd880ecddab0d473d56c8e9
https://doi.org/10.1007/s11144-011-0398-9
https://doi.org/10.1007/s11144-011-0398-9
Publikováno v:
Catalysis Communications. 12:845-850
The absence of ageing step in the coprecipitation method leads to modification of textural and structural properties of Mg0.75Al0.25 hydrotalcites which are reflected in the “memory effect” and in the catalytic activity of these samples for cyano
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f14dc0a503e46514212688babc6b8a34
https://doi.org/10.1016/j.catcom.2011.02.005
https://doi.org/10.1016/j.catcom.2011.02.005
Publikováno v:
Applied Clay Science. 52:1-10
The paper presents a comparison between the catalytic performances of cobalt, copper and nickel modified hydrotalcites in the epoxidation of cyclohexene using molecular oxygen, isobutyraldehyde as reductant, at 25 °C and 1 atmosphere pressure of oxy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57797c52aa3788818abfa08973c21c98
https://doi.org/10.1016/j.clay.2011.01.014
https://doi.org/10.1016/j.clay.2011.01.014
Publikováno v:
Materials Research Bulletin. 45:1106-1111
The target of this work is to investigate structural and textural modifications of Li–Al hydrotalcite-like compounds by memory effect and their impact on the catalytic activity of these solids for the cyanoethylation reaction. The samples have been
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c79cc6003040c46075164273c7c898c9
https://doi.org/10.1016/j.materresbull.2010.06.003
https://doi.org/10.1016/j.materresbull.2010.06.003
Autor:
Rodica Ionescu, Rodica Zăvoianu, Ruxandra Bîrjega, Emilian Angelescu, Mihaela Florea, Rodica Olar, Octavian Dumitru Pavel, Catalin Luculescu
Publikováno v:
Journal of Molecular Catalysis A: Chemical. 315:178-186
The paper presents a comparison between the catalytic performances of cobalt modified hydrotalcites obtained from different cobalt precursors in the epoxidation of cyclohexene using molecular oxygen, isobutyraldehyde as reductant, at 25 °C and 1 atm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f55ae1655e787d7f134e2cf7e83a936
https://doi.org/10.1016/j.molcata.2009.09.009
https://doi.org/10.1016/j.molcata.2009.09.009
Publikováno v:
Catalysis Letters. 134:309-317
The paper presents a comparison between the results obtained for cyclohexene epoxidation in the presence of base catalysts: Mg0/75Al0.25-hydrotalcite (HT), the corresponding mixed oxide (CHT), the reconstructed hydrotalcite (RHT), a hydrotalcite cont
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::298346e3e50011f28336f33489da5b98
https://doi.org/10.1007/s10562-009-0238-y
https://doi.org/10.1007/s10562-009-0238-y