Co–Ce Oxides Supported on SBA-15 for VOCs Oxidation

Autor: Pierrick Gaudin, Ralitsa Velinova, Anton Naydenov, Jean-Luc Blin, Krasimir Tenchev, Bénédicte Lebeau, Anna Dotzeva, S. Todorova, Laure Michelin, Loïc Vidal, Hristo Kolev
Přispěvatelé: Laboratoire Lorrain de Chimie Moléculaire (L2CM), Institut de Chimie du CNRS (INC)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), Institut de Science des Matériaux de Mulhouse (IS2M), Centre National de la Recherche Scientifique (CNRS)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Institute of Catalysis, Bulgarian Academy of Sciences, Silviya Zh Todorova, Ralitsa Georgieva, Anton Naydenov, Hristo Kolev, Lebeau, Bénédicte, Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2021
Předmět:
inorganic chemicals
Cerium oxide
Materials science
mesoporous structure
Oxide
chemistry.chemical_element
Catalytic combustion
propane
02 engineering and technology
010402 general chemistry
lcsh:Chemical technology
01 natural sciences
Catalysis
lcsh:Chemistry
chemistry.chemical_compound
n-hexane oxidation
[CHIM] Chemical Sciences
Ce oxides
[CHIM]Chemical Sciences
lcsh:TP1-1185
Physical and Theoretical Chemistry
Cobalt oxide
[CHIM.MATE] Chemical Sciences/Material chemistry
catalytic combustion
methane
[CHIM.CATA] Chemical Sciences/Catalysis
[CHIM.CATA]Chemical Sciences/Catalysis
[CHIM.MATE]Chemical Sciences/Material chemistry
021001 nanoscience & nanotechnology
0104 chemical sciences
Cerium
SBA-15
Chemical engineering
chemistry
lcsh:QD1-999
13. Climate action
0210 nano-technology
Mesoporous material
Co–Ce oxides
Cobalt
Co–
Zdroj: Catalysts, Vol 11, Iss 366, p 366 (2021)
Catalysts
Catalysts, MDPI, 2021, 11 (3), pp.366. ⟨10.3390/catal11030366⟩
Catalysts, 2021, 11 (3), pp.366. ⟨10.3390/catal11030366⟩
Volume 11
Issue 3
ISSN: 2073-4344
DOI: 10.3390/catal11030366⟩
Popis: Reported here are new data on the structural and catalytic properties of a series of mono-component cobalt and bi-component Co–Ce catalysts supported on SBA-15 (Santa Barbara Amorphous-15)). The catalysts performance has been evaluated by tests on combustion of methane, propane, and n-hexane. It was established that the preparation of the Co–Ce catalysts by the ‘two-solvent’ technique does not significantly change the mesoporous structure, however, its pores are clogging with the Co and Ce guest species. Cobalt and cerium are uniformly distributed and preferentially fill up the channels of SBA-15, but oxide agglomerates located on the surface are observed as well. The highest activity of the mono-component cobalt sample is explained by its higher reducibility as a result of lower interaction of the cobalt oxide with the SBA-15. The fine dispersion of cobalt and cerium oxide and their strong interaction in the channels of the SBA-15 molecular sieve, leads to the formation of difficult-to-reduce oxide phases and, consequently, to lower catalytic activity compared to monocomponent cobalt oxide catalyst. The synthesised mesoporous structure can prevent the agglomeration of the oxide particles, thus leading to the successful development of a new and stable catalyst for decreasing greenhouse gas emissions.
Databáze: OpenAIRE
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