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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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Iron(III) Oxide Nanoparticles as Catalysts for the Formation of Linear Glycine Peptides

Thomas Georgelin, Mariame Akouche, Maguy Jaber, Yuriy Sakhno, Lucrece Matheron, Frederic Fournier, Christophe Methivier, Gianmario Martra, Jean François Lambert

European Journal of Inorganic Chemistry, 2017, 2017 (1), pp.198 - 211. ⟨10.1002/ejic.201601296⟩. ⟨hal-01547148⟩

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Heteroaggregation and Selective Deposition for the Fine Design of Nanoarchitectured Bifunctional Catalysts: Application to Hydroisomerization

Olfa Ben Moussa, Lionel Tinat, Xiaojing Jin, Walid Baaziz, Olivier Durupthy, Celine Sayag, Juliette Blanchard

We successfully prepared bifunctional catalysts with the distance between metallic and acid sites tuned at the nanometer scale. Sols of β-zeolite nanoparticles were synthesized and mixed in optimized conditions with a γ-AlOOH boehmite suspension to yield alumina/zeolite aggregates with a nanometer…

ACS Catalysis, 2018, 8 (7), pp.6071-6078. ⟨10.1021/acscatal.8b01461⟩. ⟨hal-02160135⟩

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Hydroxyapatite: A Matrix for Metal Exsolution Leading to Highly Dispersed Catalytically Active Species

Josefine Schnee, Ferdaous Ben Romdhane, François Devred, Antoine Miche, Alixandre Magerat, Diane Reja, Eric Gaigneaux, Marco Daturi, Cyril Thomas, Guylène Costentin

Hydroxyapatite (Ca10(PO4)6(OH)2, or HAp) -the main mineral component of bones and teeth -is a material of great interest not only in biomedical applications but also in heterogeneous catalysis. Its framework Ca 2+ cations can be substituted by a wide variety of catalytically active metals (Cu 2+ ,…

Chemistry of Materials, 2024, 36 (3), pp.1188-1196. ⟨10.1021/acs.chemmater.3c01749⟩. ⟨hal-04747806⟩

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Metallomics in deep time and the influence of ocean chemistry on the metabolic landscapes of Earth's earliest ecosystems

Keyron Hickman-Lewis, Barbara Cavalazzi, Stéphanie Sorieul, Pascale Gautret, Frédéric Foucher, Martin Whitehouse, Heejin Jeon, Thomas Georgelin, Charles Cockell, Frances Westall

Modern biological dependency on trace elements is proposed to be a consequence of their enrichment in the habitats of early life together with Earth's evolving physicochemical conditions; the resulting metallic biological complement is termed the metallome. Herein, we detail a protocol for…

Scientific Reports, 2020, ⟨10.1038/s41598-020-61774-w⟩. ⟨insu-02511006⟩

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Solid base catalysts obtained from hydrotalcite precursors, for Knoevenagel synthesis of cinamic acid and coumarin derivatives

E. Angelescu, Octavian Dumitriu Pavel, Ruxandra Bırjega, Rodica Zavoianu, Guylène Costentin, Michel Che

The goal of this paper was to study the synthesis of the cinamic acid, coumarin-3-carboxilic acid and their ethylesters by Knoevenagel condensation using the solid base catalysts obtained from calcined Mg–Al, Mg–Al + Ln (Ln = Dy, Gd) and Li–Al hydrotalcites, under solvent free conditions.…

Applied Catalysis A : General, 2006, 308, pp.13-18. ⟨10.1016/j.apcata.2006.04.011⟩. ⟨hal-00112131⟩

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Development of acidic sites in WOx/ZrO2

Thomas Onfroy, Guillaume Clet, Marwan Houalla

Evidence is shown of the appearance of Brønsted acidic sites in WOx/ZrO2 at a given W loading and of a direct correlation between the abundance of ‘strong’ Brønsted acidic sites in these catalysts and propan-2-ol decomposition activity.

Chemical Communications, 2001, 15, pp.1378-1379. ⟨10.1039/b102867g⟩. ⟨hal-02399977⟩

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Origins of Life and Molecular Information: Selectivity in Mineral Surface-Induced Prebiotic Amino Acid Polymerization

Lise Bedoin, Sandra Alves, Jean-François Lambert

ACS Earth and Space Chemistry, 2020, acsearthspacechem.0c00183. ⟨10.1021/acsearthspacechem.0c00183⟩. ⟨hal-03133031⟩

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Unraveling the Mechanisms of Hypertrophy-Induced Matrix Mineralization and Modifications in Articular Chondrocytes

Ilhem Lilia Jaabar, Brittany Foley, Alberto Mezzetti, Françoise Pillier, Francis Berenbaum, Jessem Landoulsi, Xavier Houard

Chondrocyte hypertrophic differentiation is a main event leading to articular cartilage degradation in osteoarthritis. It is associated with matrix remodeling and mineralization, the dynamics of which is not well characterized during chondrocyte hypertrophic differentiation in articular cartilage.…

Calcified Tissue International, 2024, 115, pp.269-282. ⟨10.1007/s00223-024-01229-w⟩. ⟨hal-04625651⟩

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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⟩