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Kinetic Assessment of Dry Reforming of Methane on Pt + Ni Containing Composite of Fluorite-Like Structure Full article

Общее Language: Английский, Genre: Full article,
Status: Published, Source type: Original
Journal Applied Catalysis B: Environmental
ISSN: 0926-3373 , E-ISSN: 1873-3883
Output data Year: 2016, Volume: 182, Pages: 513-524 Pages count : 12 DOI: 10.1016/j.apcatb.2015.09.049
Tags Dry reforming, Fluorite-like complex oxide catalyst, Kinetics, Methane
Authors Bobrova L.N. 1 , Bobin A.S. 1,2 , Mezentseva N.V. 1 , Sadykov V.A. 1,2 , Thybaut J.W. 3 , Marin G.B. 3
Affiliations
1 Boreskov Institute of Catalysis, 630090 Novosibirsk, Russia
2 Novosibirsk State University, 630090 Novosibirsk, Russia
3 Laboratory for Chemical Technology, Ghent University, Krijgslaan 281 S5, B-9000 Ghent, Belgium

Funding (1)

1 European Commission 228953 FP7-NMP-2008-LARGE-2 OCMOL

Abstract: Methane dry reforming kinetics over the 1.2% Pt/80% Pr0.15Sm0.15Ce0.35Zr0.35Ox + 10%NiO + 10% YSZ catalyst (Pt + Ni/PrSmCeZrO/YSZ) has been assessed. First-order kinetics in methane was found for the forward reaction rate up to an equimolar methane/carbon dioxide feed ratio. The reaction rate was inhibited by adding methane beyond the stoichiometric value. A relatively constant zero reaction order towards CO2 can be applied when a CO2 excess of at least 1.5 over the stoichiometric value is employed. The existence of two different activation regimes is evident in Arrhenius plots with an inflection point at about 750 °C. Kinetic parameters for the net rate of CH4 conversion over the Pt + Ni/PrSmCeZrO/YSZ composite catalyst were also determined by regression. The novel Pt + Ni/PrSmCeZrO/YSZ catalyst was benchmarked against a complex Pt-promoted fluorite-like doped ceria-zirconia oxide sample of similar atomic fractions of the corresponding elements (Pt/PrSmCeZrO/YSZ) in methane dry reforming. The Pt + Ni/SmPrCeZr/YSZ nanocomposite catalyst is regarded to be the most effective on a per unit mass basis. Higher methane conversions and H2/CO ratios in the synthesis gas were obtained, while only minor differences were observed in the CO2 conversions.
Cite: Bobrova L.N. , Bobin A.S. , Mezentseva N.V. , Sadykov V.A. , Thybaut J.W. , Marin G.B.
Kinetic Assessment of Dry Reforming of Methane on Pt + Ni Containing Composite of Fluorite-Like Structure
Applied Catalysis B: Environmental. 2016. V.182. P.513-524. DOI: 10.1016/j.apcatb.2015.09.049 publication_identifier_short.wos_identifier_type publication_identifier_short.scopus_identifier_type publication_identifier_short.rinz_identifier_type
Dates:
Submitted: Jun 25, 2015
Accepted: Sep 26, 2015
Published online: Oct 9, 2015
Published print: Mar 1, 2016
Identifiers:
publication_identifier.wos_identifier_type WOS:000365050700054
publication_identifier.scopus_identifier_type 2-s2.0-84944707109
publication_identifier.rinz_identifier_type 24934583
publication_identifier.accession_number_identifier_type 2015:1669202
publication_identifier.chemical_accession_number_identifier_type 163:620263
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