• Article dans une revue

Sn-BEA zeolites prepared by two-step postsynthesis method: Physicochemical properties and catalytic activity in processes based on MPV reduction

Nataliia Popovych, Pavlo Kyriienko, Yannick Millot, Laetitia Valentin, Jacek Gurgul, Robert Socha, Jan Żukrowski, Sergiy Soloviev, Stanislaw Dzwigaj

Sn0.5SiBEA and Sn2.0SiBEA zeolites obtained by two-step postsynthesis method were characterized by several physicochemical techniques (namely, NMR, Mössbauer, XPS, DR UV-vis and IR spectroscopies) and used in the study of Meerwein–Ponndorf–Verley (MPV) reduction as well as with the subsequent…

Microporous and Mesoporous Materials, 2018, 268, pp.178-188. ⟨10.1016/j.micromeso.2018.04.026⟩. ⟨hal-01803945⟩

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Impact of Mn addition on catalytic performance of Cu/SiBEA materials in total oxidation of aromatic volatile organic compounds

Anna Rokicińska, Patrycja Majerska, Marek Drozdek, Sebastian Jarczewski, Laetitia Valentin, Jianhong Chen, Adam Slabon, Stanislaw Dzwigaj, Piotr Kuśtrowski

Dealuminated BEA zeolite (SiBEA) was chosen as a support of metal oxide(s) phase for catalytic combustion of volatile organic compounds (VOCs). Copper and/or manganese oxide(s) were deposited at various Cu/Mn molar ratios. Factors influencing the catalytic activity were found by chosen…

Applied Surface Science, 2021, 546, pp.149148. ⟨10.1016/j.apsusc.2021.149148⟩. ⟨hal-03170296⟩

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Hydrodenitrogenation of indole over Mo2C catalyst: Insights into mechanistic events through DFT modeling

Witold Piskorz, Grzegorz Adamski, Andrzej Kotarba, Zbigniew Sojka, Céline Sayag, G. Djéga-Mariadassou

The molecular reaction mechanism of hydrodenitrogenation of indole was studied using density-functional theory calculations of the adsorbed o-ethylaniline surrounded by mobile hydrogen atoms. It was found that the hydrogenation of o-ethylaniline occurs through two steps: consisting in…

Catalysis Today, 2006, 119, pp.39-43. ⟨10.1016/j.cattod.2006.08.050⟩. ⟨hal-00128043⟩

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How dusty is α Centauri?

J. Wiegert, R. Liseau, P. Thebault, G. Olofsson, A. Mora, G. Bryden, J. Marshall, C. Eiroa, B. Montesinos, D. Ardila, J. Augereau, A. Bayo Aran, W. Danchi, C. del Burgo, S. Ertel, M. Fridlund, M. Hajigholi, A. Krivov, G. Pilbratt, A. Roberge, G. White, S. Wolf

Astronomy & Astrophysics - A&A, 2014, 563, pp.A102. ⟨10.1051/0004-6361/201321887⟩. ⟨hal-02574414⟩

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Time-resolved infrared absorption spectroscopy applied to photoinduced reactions: how and why

Alberto Mezzetti, Josefine Schnee, Andrea Lapini, Mariangela Di Donato

Time-resolved infrared (IR) spectroscopy is a widely used technique in the investigation of photoinduced reactions, given its capabilities of providing structural information about the presence of intermediates and the reaction mechanism. Despite the fact that it is used in several fields since the…

Photochemical & Photobiological Sciences , 2022, 21 (4), pp.557-584. ⟨10.1007/s43630-022-00180-9⟩. ⟨hal-04025534⟩

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EIS investigation of zinc dissolution in aerated sulfate medium. Part I: bulk zinc

Chantal Cachet, F. Ganne, Georges Maurin, J. Petitjean, Vincent Vivier, Robert Wiart

The kinetics of anodic dissolution and corrosion of zinc are investigated by electrochemical impedance spectroscopy in sulfate medium for various surface preparation conditions and different experimental procedures. A new version of the reaction model, which was established previously, accounts…

Electrochimica Acta, 2001, 47 (3), pp.509-518. ⟨10.1016/S0013-4686(01)00740-X⟩. ⟨hal-04257763⟩

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Building the uracil skeleton in primitive ponds at the origins of life: carbamoylation of aspartic acid

Louis Ter-Ovanessian, Jean-François Lambert, Marie-Christine Maurel

Abstract A large set of nucleobases and amino acids is found in meteorites, implying that several chemical reservoirs are present in the solar system. The “geochemical continuity” hypothesis explores how protometabolic paths developed from so-called “bricks” in an enzyme-free prebiotic world and…

Scientific Reports, 2022, 12 (1), pp.19178. ⟨10.1038/s41598-022-21272-7⟩. ⟨hal-03848150⟩

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On the use of a constant phase element (CPE) in electrochemistry

Samantha Michelle Gateman, Oumaïma Gharbi, Hercílio Gomes De Melo, Kieu Ngo, Mirelle Turmine, Vincent Vivier

Several techniques can be used to experimentally determine the interfacial capacitance of an electrode, which is a crucial parameter used for quantifying the efficiency of supercapacitors. However, the values obtained from cyclic voltammetry can be significantly different from those extracted from…

Current Opinion in Electrochemistry, 2022, 36, pp.101133. ⟨10.1016/j.coelec.2022.101133⟩. ⟨hal-04294208⟩

• Communication dans un congrès

APPIMIL Project: photonic and particle irradiation experiments at the CNRS Orléans and their relevance to BIOMEX and ExoMars

F. Foucher, T. Georgelin, T. Sauvage, A. Canizares, P. de Vera J.-P., M. Baqué, V. Lago, R. Joussot, Sunil Simon, R. Gay, P. Koumba-Ibala, N. Gouillon, K. Hickman-Lewis, A. Bellamy, F. Westall

BIOMEX Closing Ceremony Meeting at DLR, Mar 2019, Berlin, Germany. ⟨hal-03089550⟩

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Maghemite nanoparticles and maghemite/silica nanocomposite microspheres as magnetic Fenton catalysts for the removal of water pollutants

Nassira Ferroudj, Jimmy Nzimoto, Anne Davidson, Delphine Talbot, Emmanuel Briot, Vincent Dupuis, Agnès Bée, Mohamed Salah Medjram, Sébastien Abramson

Maghemite nanoparticles (-Fe 2 O 3 NP) and maghemite/silica nanocomposite microspheres (-Fe 2 O 3 /SiO 2 MS) have been evaluated as magnetic heterogeneous Fenton catalysts. The catalysts were fully characterized by electronic microscopies, magnetometry, XRD, UV–vis–NIR spectroscopy, and sorption…

Applied Catalysis B: Environmental, 2013, 136-137, pp.9-18. ⟨10.1016/j.apcatb.2013.01.046⟩. ⟨hal-01525868⟩