• Article dans une revue

Alternative ball-milling synthesis of vanadium-substituted polyoxometalates as catalysts for the aerobic cleavage of C–C and C–O bonds

Louay Al-Hussaini, Sabine Valange, Maria Elena Gálvez, Franck Launay

Ball-milling-based synthesis of vanadium-substituted phosphomolybdic acid enables energy saving while improving the yield and providing active catalysts for aerobic oxidative cleavage.

Dalton Transactions, 2021, 50 (37), pp.12850-12859. ⟨10.1039/D1DT01585K⟩. ⟨hal-04025223⟩

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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⟩

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Fischer-Tropsch reaction on Co-containing microporous and mesoporous Beta zeolite catalysts: the effect of porous size and acidity

Renata Sadek, Karolina Chalupka, Pawel Mierczynski, Jacek Rynkowski, Yannick Millot, Laetitia Valentin, Sandra Casale, Stanislaw Dzwigaj

This work deals with the investigation of the influence of the preparation procedure on the activity of microporous and mesoporous CoBeta zeolite in Fischer – Tropsch synthesis (FTS). The series of CoSiBeta, CoAlSiBeta and CoAlBeta zeolites were prepared by: i) two-step postsynthesis procedure (…

Catalysis Today, 2020, 354, pp.109-122. ⟨10.1016/j.cattod.2019.05.004⟩. ⟨hal-03987070⟩

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Tuning the Growth Mode of 3D Silver Nanocrystal Superlattices by Triphenylphosphine

Karima Ouhenia-Ouadahi, Amandine Andrieux-Ledier, Johannes Richardi, Pierre-Antoine Albouy, Patricia Beaunier, Peter Sutter, Eli Sutter, Alexa Courty

Here, we show that the residual presence of reaction products markedly influences the growth mode of 3D superlattices made of silver nanocrystals. The silver nanocrystals (5 or 6 nm in diameter) are synthesized via the reduction of a silver triphenylphosphine complex in the presence of thiols. The…

Chemistry of Materials, 2016, 28 (12), pp.4380 - 4389. ⟨10.1021/acs.chemmater.6b01374⟩. ⟨hal-01375824⟩

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Identification of the silver state in the framework of Ag-containing zeolite by XRD, FTIR, photoluminescence, 109 Ag NMR, EPR, DR UV-vis, TEM and XPS investigations

Nataliia Popovych, Pavlo Kyriienko, Sergiy Soloviev, Rafal Baran, Yannick Millot, Stanislaw Dzwigaj

Silver has been identified in the framework of AgxSiBEA zeolites (where x = 3–6 Ag wt%) by the combined use of XRD, 109Ag MAS NMR, FTIR, diffuse reflectance UV-visible, EPR and XPS spectroscopy. The incorporation of Ag ions into the framework of SiBEA zeolite has been evidenced by XRD. The…

Physical Chemistry Chemical Physics, 2016, 18, pp.29458-29465. ⟨10.1039/c6cp05263k⟩. ⟨hal-01387417⟩

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Cysteine-montmorillonite composites for heavy metal cation complexation: A combined experimental and theoretical study

Khaled El Adraa, Thomas Georgelin, Jean-François Lambert, Farouk Jaber, Frederik Tielens, Maguy Jaber

Green composites based on montmorillonite (Mt) and cysteine, were prepared for heavy metal removal. A comparison between the adsorption properties of the resulting hybrid inorganic-organic materials and the pure montmorillonite was carried out for the following heavy metal cations Cd2+, Hg2+, Pb2…

Chemical Engineering Journal, 2017, 314, pp.406 - 417. ⟨10.1016/j.cej.2016.11.160⟩. ⟨hal-01490419⟩

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Characterization of Supported Vanadium Oxide Species on Silica: A Periodic DFT Investigation

Mazharul M. Islam, Dominique Costa, Monica Calatayud, Frederik Tielens

The geometry, energetic, and spectroscopic properties of molecular structures of silica-supported vanadium oxide catalysts are studied using periodic density functional calculations. Isolated vanadia units deposed on amorphous silica are modeled at low coverage, 0.44 atoms nm(-2). The models are…

Journal of Physical Chemistry C, 2009, 113 (24), pp.10740-10746. ⟨10.1021/jp902818m⟩. ⟨hal-01361362⟩

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Exploring the reactivity of mixed omega-functionalized undecanethiol self-assembled monolayers - A DFT study

Frederik Tielens, Vincent Humblot, Claire-Marie Pradier

The reactive sites of self-assembled monolayers (SAM) formed by substituted thiolalkyl chains have been predicted in the case of the pure mercaptoundecane acid, for the pure mercaptoundecane alcohol, and the mixed 1:1 SAMs. The differences in reactivity between the different SAM domains (pure and…

International Journal of Quantum Chemistry, 2008, 108 (10), pp.1792-1795. ⟨10.1002/qua.21600⟩. ⟨hal-01361371⟩

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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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One Step up the Ladder of Prebiotic Complexity: Formation of Nonrandom Linear Polypeptides from Binary Systems of Amino Acids on Silica

Yuriy Sakhno, Alice Battistella, Alberto Mezzetti, Maguy Jaber, Thomas Georgelin, Laurent Michot, Jean-François Lambert

Evidence for the formation of linear oligopeptides with nonrandom sequences from mixtures of amino acids coadsorbed on silica and submitted to a simple thermal activation is presented. The amino acid couples (glutamic acid+leucine) and (aspartic acid+valine) were deposited on a fumed silica and…

Chemistry - A European Journal, 2019, 25 (5), pp.1275-1285. ⟨10.1002/chem.201803845⟩. ⟨hal-02067461⟩