• Article dans une revue

Influence of Dealumination by Acetylacetone on Acidity and Activity of Amorphous Silica-Aluminas

Xiaojing Jin, Yannick Millot, Céline Sayag, Juliette Blanchard, Pascal Ping Man

The influence of dealumination of two commercial amorphous silica-aluminas (ASAs) with acetylacetone on their textural properties, acidity and catalytic activity was studied by N2-sorption, NH3-TPD, FTIR of adsorbed pyridine as well as 1 H and 27 Al MAS NMR. Acetylacetone treatment increases the…

ChemistrySelect, 2020, 5 (8), pp.2489-2495. ⟨10.1002/slct.201904712⟩. ⟨hal-02919070⟩

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Novel nano-architectured water splitting photoanodes based on TiO2-nanorod mats surface sensitized by ZIF-67 coatings

W.M.A. El Rouby, M. Antuch, S.-M. You, P. Beaunier, P. Millet

International Journal of Hydrogen Energy, 2019, 44 (59), pp.30949-30964. ⟨10.1016/j.ijhydene.2019.08.220⟩. ⟨hal-04022360⟩

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Effects of Pd on Catalysis by Au: CO Adsorption, CO Oxidation, and Cyclohexene Hydrogenation by Supported Au and Pd-Au Catalysts

Anthony Ward, Laurent Delannoy, Ruth Hahn, Shane Kendell, Christopher J. Pursell, Catherine Louis, Bert D. Chandler

catalysts has been shown to have beneficial effects on selective hydrogenation reactions, particularly 1,3- butadiene hydrogenation and the hydrogenation of nitroaromatics, especially p-chloronitrobenzene. Appropriate Pd incorporation enhances hydrogenation activity while maintaining the desirable…

ACS Catalysis, 2013, 3, pp.2644-2653. ⟨10.1021/cs400569v⟩. ⟨hal-00913284⟩

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Chemical Weathering of Alumina in Aqueous Suspension at Ambient Pressure: A Mechanistic Study

Jane Abi aad, Sandra Casale, Mathieu Michau, Philippe Courty, Fabrice Diehl, Eric Marceau, Xavier Carrier

ChemCatChem, 2017, 9 (12), pp.2186 - 2194. ⟨10.1002/cctc.201700145⟩. ⟨hal-01791168⟩

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Probing Peptide-inorganic surface interaction at the single molecule level using force spectroscopy.

Jessem Landoulsi, Vincent Dupres

We investigate the interaction between D-Ala-D-Ala peptide and a stainless steel (SS) surface by AFM force spectroscopy with view to understand the role and nature of interfacial processes at the single molecule level. For this purpose, force-distance curves were recorded between the D-Ala-D-Ala…

ChemPhysChem, 2011, 12 (7), pp.1310-6. ⟨10.1002/cphc.201100007⟩. ⟨hal-00596388⟩

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Phase cycling in MQMAS sequences for half-integer quadrupole spins

Redouane Hajjar, Yannick Millot, Pascal P. Man

A review presents the anal. expressions of the first- and second-order quadrupole interactions for a static crystal, and for a crystal rotating at variable or magic angle. It also provides mathematica notebooks for calcg. the anal. expressions of existing interactions. Nested phase cycling in MQMAS…

Progress in Nuclear Magnetic Resonance Spectroscopy, 2010, 57 (3), pp.306-342. ⟨10.1016/j.pnmrs.2010.05.003⟩. ⟨hal-00604722⟩

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Nickel(II) Nitrate vs. Acetate: influence of the Precursor on the Structure and Reducibility of Ni/MCM-41 and Ni/Al-MCM-41 Catalysts

Eric Marceau, Michel Che, Jiri Cejka, Arnost Zukal

Nickel(II) nitrate is the nickel precursor generally selected to prep. oxide-supported catalysts, due to its low cost, high soly. in water and decompn. at moderate temps. However, its decompn. produces NOx, and it is known to melt and redistribute over the support upon heating, leading to poorly…

ChemCatChem, 2010, 2 (4), pp.413-422. ⟨10.1002/cctc.200900289⟩. ⟨hal-00604777⟩

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Chemisorbed atomic oxygen inducing Pd segregation in PdAu(111) alloy: Energetic and electronic DFT analysis

Hazar Guesmi, Catherine Louis, Laurent Delannoy

Segregation energies of isolated Pd in PdAu(1 1 1) alloy are investigated by DFT calculations as a function of the oxygen coverage. Segregation of Pd is found to be oxygen-coverage dependent. While for 'clean' PdAu(1 1 1), Pd prefers to be in the bulk, in the presence of more than 1/3 ML…

Chemical Physics Letters, 2011, 503 (1-3), pp.97-100. ⟨10.1016/j.cplett.2010.12.064⟩. ⟨hal-00602939⟩

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Incorporation of Mn into the vacant T-atom sites of a BEA zeolite as isolated, mononuclear Mn: FTIR, XPS, EPR and DR UV-Vis studies

R. Baran, L. Valentin, Stanislaw Dzwigaj

A MnSiBEA zeolite has been prepared via a two-step postsynthesis procedure which consisted, in the first step, of the treatment of a tetraethylammonium BEA zeolite with nitric acid for the formation of vacant T-atom sites and then, in the second step, of the incorporation of Mn ions into the…

Physical Chemistry Chemical Physics, 2016, 18 (17), pp.12050-12057. ⟨10.1039/c6cp01713d⟩. ⟨hal-01312882⟩

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Role of Hydroxyl Groups in the Basic Reactivity of MgO : a Theoretical and Experimental Study

Céline Chizallet, Guylène Costentin, Hélène Lauron-Pernot, Jean Marc Krafft, Philippe Bazin, Jacques Saussey, Françoise Delbecq, Philippe Sautet, Michel Che

Clean (i.e., carbonate- and hydroxyl-free) and hydroxylated MgO surfaces of various morphologies were used to study the correlation between thermodynamic Brønsted basicity (evaluated by the deprotonation of methanol and propyne followed by FTIR) and basic reactivity (evaluated by the conversion of…

Oil & Gas Science and Technology - Revue d'IFP Energies nouvelles, 2006, 61 (4), pp.479-488. ⟨10.2516/ogst:2006023a⟩. ⟨hal-00112158⟩