Effect of TiO2 on Acidity and Dispersion of H3PW12O40 in Bifunctional Cu-ZnO(Al)-H3PW12O40/TiO2 Catalysts for Direct Dimethyl Ether Synthesis

Autor: Elena Millán Ordóñez, Noelia Mota Toledo, Bertrand Revel, Olivier Lafon, Rufino M. Navarro Yerga

Publikováno v: Catalysts, Vol 14, Iss 7, p 435 (2024)

The performance of bifunctional hybrid catalysts based on phosphotungstic acid (H3PW12O40, HPW) supported on TiO2 combined with a Cu-ZnO(Al) catalyst in the direct synthesis of dimethyl ether (DME) from syngas has been investigated. In this work, dif

Externí odkaz: https://doaj.org/article/0978dec458d1459bad4e9602b48ccd59

Micro-Analytical Study of a Zeolites/Geo-Polymers/Quartz Composite, Dielectric Behaviour and Contribution to Brønsted Sites Affinity

Autor: Abdel Boughriet, Oscar Allahdin, Nicole Poumaye, Gregory Tricot, Bertrand Revel, Ludovic Lesven, Michel Wartel

Publikováno v: Ceramics, Vol 5, Iss 4, Pp 908-927 (2022)

The chemical and mineralogical surface properties of a brick-derived composite were examined by using an environmental scanning electron microscopy (ESEM) equipped with an energy dispersive X-ray spectrometer (EDS). Investigations revealed that the m

Externí odkaz: https://doaj.org/article/25e14d678f614b9cb60545c1c3b68263

Investigating the active phase of Ca-based glycerol polymerization catalysts: On the importance of calcium glycerolate

Autor: Franck Dumeignil, Benjamin Katryniok, Negisa Ebadi Pour, Laurent Delevoye, Sébastien Paul, Bertrand Revel

Publikováno v: Molecular Catalysis
Molecular Catalysis, Elsevier, 2021, 507, pp.111571. ⟨10.1016/j.mcat.2021.111571⟩
Molecular Catalysis, 2021, 507, pp.111571. ⟨10.1016/j.mcat.2021.111571⟩

Ca-based catalysts are of strong interest for glycerol polymerization reaction due to their high catalytic performances, their wide availability and the absence of any toxicity. In the present study, we investigated the active phase of CaO, Ca(OH)2,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::45b3eca7c558fa8906c71796a0478a45
https://hal.archives-ouvertes.fr/hal-03455863

Potassium niobato-phosphate glasses and glass-ceramics

Autor: Petr Mošner, Petr Kalenda, Bertrand Revel, Ladislav Koudelka, Lionel Montagne

Publikováno v: Journal of Non-Crystalline Solids
Journal of Non-Crystalline Solids, 2021, 572, pp.121091. ⟨10.1016/j.jnoncrysol.2021.121091⟩

Glasses of the ternary system K2O-Nb2O5-P2O5 were studied in three compositional series (60-x)K2O-xNb2O5-40P2O5 (series A) with 10–40 mol% Nb2O5, 40K2O-yNb2O5-(60-y)P2O5 (series B) with 10–30 mol% Nb2O5 and zK2O-20Nb2O5-(80-z)P2O5 (series C) with

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c83a623e83b537579100325c4492b96b
https://doi.org/10.1016/j.jnoncrysol.2021.121091

Non-homogeneous distribution of Al3+ in doped phosphate glasses revealed by 27Al/31P solid state NMR

Autor: Grégory Tricot, Hervé Vezin, Bertrand Revel, M Bria, Julien Trébosc, Bertrand Doumert

Publikováno v: Solid State Nuclear Magnetic Resonance
Solid State Nuclear Magnetic Resonance, Elsevier, 2017, 84, pp.137-142. ⟨10.1016/j.ssnmr.2017.02.003⟩
Solid State Nuclear Magnetic Resonance, 2017, 84, pp.137-142. ⟨10.1016/j.ssnmr.2017.02.003⟩

International audience; Solid state NMR is applied in this contribution on the xAl2O3-(50-x/2)Na2O-(50-x/2)P2O5 composition line (with 0 < x < 5mol%) in order to investigate the distribution of Al3+ ions in Al2O3-doped sodium phosphate glasses. The s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::379e6f8a15a43cc7dd1589902e2659ab
https://doi.org/10.1016/j.ssnmr.2017.02.003