Molecular approach to prepare mixed MoW alumina supported hydrotreatment catalysts using H4SiMonW12−nO40 heteropolyacids

Autor: Christine Lancelot, Pascal Blanchard, M. S. Nikul’shina, Olivier Mentré, Edmond Payen, Michel Fournier, Valérie Briois, P. A. Nikul’shin, Anne Griboval-Constant, Carole Lamonier, A. V. Mozhaev

Publikováno v: Catalysis Science & Technology
Catalysis Science & Technology, 2018, Catalysis Science & Technology, 8, pp.5557-5572. ⟨10.1039/C8CY00672E⟩

International audience; H4[SiMonW12−nO40] heteropolyacids (HPAs) are interesting precursors for the preparation of alumina-supported hydrotreatment catalysts to introduce both metals simultaneously while maintaining a Mo–W nanoscale proximity. Tw

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e883ec57d2b51b6e7f9c43677228aea9
https://doi.org/10.1039/c8cy00672e

Genesis of active phase in MoW/Al2O3 hydrotreating catalysts monitored by HAADF and in situ QEXAFS combined to MCR-ALS analysis

Autor: Anne Griboval-Constant, Carole Lamonier, Valérie Briois, M. S. Nikul’shina, P. A. Nikul’shin, Maya Marinova, Pascal Blanchard, Christine Lancelot

Publikováno v: Applied Catalysis B: Environmental
Applied Catalysis B: Environmental, Elsevier, 2020, 269, pp.118766. ⟨10.1016/j.apcatb.2020.118766⟩
Applied Catalysis B: Environmental, 2020, 269, pp.118766. ⟨10.1016/j.apcatb.2020.118766⟩

International audience; Alumina supported MoW hydrotreating catalyst was synthesized by using bimetallic H 4 [SiMo 3 W 9 O 40 ] Keggin heteropolyacid (HPA). Catalysts based on monometallic H 4 [SiMo 12 O 40 ] and H 4 [SiW 12 O 40 ] and their mixture

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5d6e1ceacfe0a6f294455aa5bd30f303
https://doi.org/10.1016/j.apcatb.2020.118766

Direct Evidence of Surface Oxidation of Cobalt Nanoparticles in Alumina-Supported Catalysts for Fischer–Tropsch Synthesis

Autor: Majid Sadeqzadeh, Daniel Curulla-Ferré, Vitaly V. Ordomsky, Maxime Lacroix, Odile Stéphan, Francis Luck, Anne Griboval-Constant, Pascal Fongarland, Christine Lancelot, Andrei Y. Khodakov, Héline Karaca

Publikováno v: ACS Catalysis. 4:4510-4515

Activity and stability of cobalt nanoparticles supported on mesoporous oxides is of extreme importance for the design of efficient catalysts for low-temperature Fischer–Tropsch synthesis. Catalyst deactivation is a major challenge of this reaction.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0c0e483d4043805a017620ccfbf0b5af
https://doi.org/10.1021/cs500981p

Molecular structure and localization of carbon species in alumina supported cobalt Fischer–Tropsch catalysts in a slurry reactor

Autor: D. Pena, Melesio Quijada, Fabrice Diehl, Andrei Y. Khodakov, Odile Stéphan, Christine Lancelot, Anne Griboval-Constant, Nicolas Visez, Vincent Lecocq

Publikováno v: Catalysis Today
Catalysis Today, 2014, Catalysis Today, 228, pp.65-76

The paper focusses on the identification of molecular structure of carbon species in 15 wt.% Co/Al 2 O 3 supported catalyst exposed to different conditions of Fischer–Tropsch synthesis in a continuously stirred tank reactor (CSTR). Characterization

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b781f7f653f8e4d4b3f62388fa96d94
https://doi.org/10.1016/j.cattod.2013.10.005

Promotion of lanthanum-supported cobalt-based catalysts for the Fischer–Tropsch reaction

Autor: Anne Griboval-Constant, Andrei Y. Khodakov, Cathy Brabant

Publikováno v: Comptes Rendus. Chimie
Comptes Rendus. Chimie, Académie des sciences (Paris), 2017, Comptes Rendus Chimie, 20 (1), pp.40-46. ⟨10.1016/j.crci.2016.02.006⟩
Comptes Rendus. Chimie, 2017, Comptes Rendus Chimie, 20 (1), pp.40-46. ⟨10.1016/j.crci.2016.02.006⟩

This paper focuses on the effect of the La/Co ratio on the structure of alumina cobalt supported catalysts for Fischer–Tropsch synthesis. Catalysts are prepared by wetness impregnation of alumina followed by calcination in air. The catalysts contai

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb530bf7d984705c87735e021b30c665