Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Mihaela M. Trandafir"'
Autor:
Ovidiu G. Florea, Adelina Stănoiu, Marin Gheorghe, Cornel Cobianu, Florentina Neaţu, Mihaela M. Trandafir, Ştefan Neaţu, Mihaela Florea, Cristian E. Simion
Publikováno v:
Materials, Vol 13, Iss 21, p 4888 (2020)
Pd deposited on CeOx-MnOx/La-Al2O3 has been prepared as a sensitive material for methane (CH4) detection. The effect of different amounts (1.25%, 2.5% and 5%) of Pd loading has been investigated. The as prepared materials were deposited on Pt microco
Externí odkaz:
https://doaj.org/article/886f63ffdd5b45b1ae9d56b13692884e
Publikováno v:
Catalysts, Vol 10, Iss 7, p 728 (2020)
The catalytic activity of a series of vanadium aluminophosphates catalysts prepared by sol-gel method followed by combustion of the obtained gel was evaluated in glycerol conversion towards methanol. The materials were characterized by several techni
Externí odkaz:
https://doaj.org/article/f8e95fd50fc04bf395b20104c4efa43c
Autor:
Hussein Mahdi S. Al-Aani, Mihaela M. Trandafir, Ioana Fechete, Lucia N. Leonat, Mihaela Badea, Cătălin Negrilă, Ionel Popescu, Mihaela Florea, Ioan-Cezar Marcu
Publikováno v:
Catalysts, Vol 10, Iss 6, p 613 (2020)
To improve the catalytic performance of an active layered double hydroxide (LDH)-derived CuCeMgAlO mixed oxide catalyst in the total oxidation of methane, it was promoted with different transition-metal cations. Thus, two series of multicationic mixe
Externí odkaz:
https://doaj.org/article/17545315d1fd485881ede4bc484ae055
Autor:
Cristian E. Simion, Ovidiu G. Florea, Mihaela Florea, Florentina Neaţu, Ştefan Neaţu, Mihaela M. Trandafir, Adelina Stănoiu
Publikováno v:
Materials, Vol 13, Iss 9, p 2196 (2020)
Mesoporous CeO2:Mn3O4 materials (3:7 and 7:3 molar ratio) were prepared by co-precipitation and deposited as porous thick films over alumina (Al2O3) planar substrate provided with Pt meander. The aim was oriented towards detecting low levels methane
Externí odkaz:
https://doaj.org/article/5e2be93e9ac04957b42d3a2823426fda
Bulk Versus Surface Modification of Alumina with Mn and Ce Based Oxides for CH4 Catalytic Combustion
Autor:
Stefan Neatu, Mihaela M. Trandafir, Adelina Stănoiu, Ovidiu G. Florea, Cristian E. Simion, Lucia N. Leonat, Cornel Cobianu, Marin Gheorghe, Mihaela Florea, Florentina Neatu
Publikováno v:
Materials, Vol 12, Iss 11, p 1771 (2019)
This study presents the synthesis and characterization of lanthanum-modified alumina supported cerium−manganese mixed oxides, which were prepared by three different methods (coprecipitation, impregnation and citrate-based sol-gel method) followed b
Externí odkaz:
https://doaj.org/article/553973889f9844169995e2dbfdc0a823
Publikováno v:
Materials, Vol 12, Iss 5, p 748 (2019)
This study deals with the behavior of molybdenum–vanadium (Mo/V) mixed oxides catalysts in both disproportionation and selective oxidation of toluene. Samples containing different Mo/V ratios were prepared by a modified method using tetradecyltrime
Externí odkaz:
https://doaj.org/article/1f856e6b6f594066bd9e4ca2327552c6
Autor:
Simona Somacescu, Petre Osiceanu, Jose Maria Calderon Moreno, Daniela C. Culita, Florentina Neațu, Mihaela M. Trandafir, Ștefan Neațu, Andrei Kuncser, Gábor P. Szijjártó, Emília Tálas, András Tompos, Irina Borbáth, Mihaela Florea
Publikováno v:
International Journal of Hydrogen Energy. 48:6317-6335
Publikováno v:
Catalysis Today. 355:893-902
Hydrogenation of nitroderivatives (4-nitrostyrene or 7-nitro-1-tetralone) was performed using as support a silica mesoporous material with high specific surface area (1091 m2/g) and a bimodal pore size distribution (UVM-7). Gold and/or TiO2 were depo
Autor:
Florentina Neaţu, Varun Natu, Andrei Kuncser, Ştefan Neaţu, Mihaela Florea, Mihaela M. Trandafir, Michel W. Barsoum, Iuliana M. Chirica, Elena I. Cucolea
Publikováno v:
ACS Catalysis. 10:5899-5908
Palladium is one of the most efficient metals for the hydrogenation of organic compounds. However, when molecules, such as nitroaromatics, with several reducible functionalities, are hydrogenated, ...
Autor:
Nicoleta Petrea, Florentina Neaţu, Jeroen A. van Bokhoven, Frank Krumeich, Julian T. C. Wennmacher, Victor C. Diculescu, Ştefan Neaţu, Mihaela Florea, Simona Somacescu, Mihaela M. Trandafir, Amy J. Knorpp
Publikováno v:
ACS Applied Materials & Interfaces. 12:18407-18420
In this study, the synergistic behavior of Ni species and bimodal mesoporous undoped SnO2 is investigated in oxygen evolution reactions (OERs) under alkaline conditions without any other modificati...