The Effect of Metal Deposition Order on the Synergistic Activity of Au–Cu and Au–Ce Metal Oxide Catalysts for CO Oxidation Full article
| Journal |
Applied Catalysis B: Environmental
ISSN: 0926-3373 , E-ISSN: 1873-3883 |
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| Output data | Year: 2015, Volume: 168-169, Pages: 303-312 Pages count : 10 DOI: 10.1016/j.apcatb.2014.12.030 | ||||||
| Tags | Au-Ce, Au-Cu, CO oxidation, Mechanism, Synergism | ||||||
| Authors |
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| Affiliations |
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Funding (4)
| 1 | Russian Foundation for Basic Research | 12-03-00595 (01201262215) |
| 2 | Russian Foundation for Basic Research | 12-03-33062 (01201351602) |
| 3 | Russian Foundation for Basic Research | 13-03-00320 (01201355981) |
| 4 | Council for Grants of the President of the Russian Federation | МК-92.2013.3 |
Abstract:
Monometallic Au/Al2O3, MxOy/Al2O3 (Mdouble bond; length as m-dashCu; Ce) catalysts and bimetallic catalysts with simultaneously (Au + MxOy) and sequentially (MxOy/Au, Au/MxOy) deposited metals were prepared. Oxidation of CO in the presence of these catalysts at 50–450 °C was studied. The activity of the catalysts increases in the following series: MxOy/Au/Al2O3 > Au/MxOy/Al2O3 > (Au + MxOy)/Al2O3 > CuxOy/Al2O3 > Au/Al2O3 > CexOy/Al2O3. A synergistic effect was detected at 50–250 °C: bimetallic catalysts converted up to 50% of CO to CO2, while the monometallic samples were inactive. Increasing the reaction temperature above 250 °C results in a decreased synergistic effect, although bimetallic catalysts still possess good activity. The electronic and structural organization of the catalyst active sites before and after the reaction were studied by means of XRD, TEM, EDX, XPS, and DRIFTS techniques. The causes for the synergistic effect and the reaction mechanism in the presence of synergistic catalysts are proposed and discussed.
Cite:
Nikolaev S.A.
, Golubina E.V.
, Krotova I.N.
, Shilina M.I.
, Chistyakov A.V.
, Kriventsov V.V.
The Effect of Metal Deposition Order on the Synergistic Activity of Au–Cu and Au–Ce Metal Oxide Catalysts for CO Oxidation
Applied Catalysis B: Environmental. 2015. V.168-169. P.303-312. DOI: 10.1016/j.apcatb.2014.12.030 WOS Scopus РИНЦ ANCAN OpenAlex
The Effect of Metal Deposition Order on the Synergistic Activity of Au–Cu and Au–Ce Metal Oxide Catalysts for CO Oxidation
Applied Catalysis B: Environmental. 2015. V.168-169. P.303-312. DOI: 10.1016/j.apcatb.2014.12.030 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Oct 27, 2014 |
| Accepted: | Dec 21, 2014 |
| Published online: | Dec 26, 2014 |
| Published print: | Jun 1, 2015 |
Identifiers:
| Web of science: | WOS:000352747200033 |
| Scopus: | 2-s2.0-84920903316 |
| Elibrary: | 23964346 |
| Chemical Abstracts: | 2015:20529 |
| Chemical Abstracts (print): | 162:262121 |
| OpenAlex: | W2072558631 |