Catalytic complete oxidation of acetylene and propene over clay versus cordierite honeycomb monoliths without and with chemical vapor deposited cobalt oxide

[Display omitted] •Clay monolith exhibited good catalytic performance toward C2H2 and C3H6 oxidation.•Crystalline Co3O4 was successfully coated upon clay and cordierite monoliths.•Co3O4 coated clay monolith showed higher activity than coated cordierite monolith.•Clay-based monolithic catalysts maint...

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Bibliographic Details
Published in:Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2015-02, Vol.262, p.1252-1259
Main Authors: Assebban, Mhamed, Tian, Zhen-Yu, El Kasmi, Achraf, Bahlawane, Naoufal, Harti, Sanae, Chafik, Tarik
Format: Article
Language:English
Subjects:
Catalysis
Catalysts
Catalytic oxidation
Chemical vapor deposited cobalt oxide
Chemical vapor deposition
Clay
Clay (material)
Cordierite
Honeycomb
Honeycomb construction
Honeycomb monolith
Oxidation
VOC
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Summary:[Display omitted] •Clay monolith exhibited good catalytic performance toward C2H2 and C3H6 oxidation.•Crystalline Co3O4 was successfully coated upon clay and cordierite monoliths.•Co3O4 coated clay monolith showed higher activity than coated cordierite monolith.•Clay-based monolithic catalysts maintained good stability on time.•Promising potential application of the clay as catalyst and/or as catalyst support. The catalytic oxidation of acetylene (C2H2) and propene (C3H6), selected as model unsaturated hydrocarbons, was investigated over uncoated- and Co3O4-coated natural clay honeycomb monoliths and their performance was compared with commercial cordierite. Co3O4 was deposited using chemical vapor deposition (CVD) and chosen based on its recently demonstrated high activity. The catalytic behavior of the clay and cordierite-based monolithic samples has been investigated for the determination of the temperature-dependent conversion yield, specific reaction rate and related activation energy. The obtained results revealed a promising intrinsic catalytic performance of the uncoated clay monoliths. Furthermore, a synergetic interaction between the clay and the Co3O4 film has enabled an improved performance relative to the coated cordierite. The present paper reveals a promising potential application of the natural clay as catalyst and/or catalyst-support through the association of the advantages offered by the chemical composition and honeycomb monolithic structure of clay.
ISSN:1385-8947
1873-3212
DOI:10.1016/j.cej.2014.10.093