Catalytic Purification of Exhaust Gases Over Pd–Rh Alloy Catalysts Full article
| Conference |
IX International Conference “Mechanisms of Catalytic Reactions” 22-25 Oct 2012 , Санкт-Петербург |
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| Journal |
Topics in Catalysis
ISSN: 1022-5528 , E-ISSN: 1572-9028 |
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| Output data | Year: 2013, Volume: 56, Number: 11, Pages: 1008-1014 Pages count : 7 DOI: 10.1007/s11244-013-0064-8 | ||||||
| Tags | Deactivation, Exhaust gases neutralization, Rhodium-palladium alloy, Stability, Three-way catalysts | ||||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Federal Agency for Scientific Organizations | V.45.3.2. |
Abstract:
Three-way catalysts with low content of Pd–Rh alloy particles used as active components were synthesized and studied. Monometallic and bimetallic mixed catalysts with corresponding precious metals loading were chosen as reference samples. The catalytic activity was tested in oxidation of carbon monoxide, hydrocarbons, and in nitrogen oxides reduction. The stability of the samples was estimated by prompt thermal aging in situ technique. Ethane hydrogenolysis testing reaction was used to determine the surface concentration of Pd and Rh, and to confirm the alloy formation. Photoluminescence and electron paramagnetic resonance spectroscopy were applied to clarify the possible reasons of deactivation and to elucidate the mechanism of stabilization. It was shown that Pd–Rh alloyed catalyst is characterized by comparable activity and enhanced stability. While the Pd and Rh particles of monometallic samples were found to interact with support at high temperatures resulting in sintering and bulk diffusion, the particles of alloy type kept their initial state of dispersion and catalytic activity.
Cite:
Vedyagin A.A.
, Gavrilov M.S.
, Volodin A.M.
, Stoyanovskii V.O.
, Slavinskaya E.M.
, Mishakov I.V.
, Shubin Y.V.
Catalytic Purification of Exhaust Gases Over Pd–Rh Alloy Catalysts
Topics in Catalysis. 2013. V.56. N11. P.1008-1014. DOI: 10.1007/s11244-013-0064-8 WOS Scopus РИНЦ ANCAN OpenAlex
Catalytic Purification of Exhaust Gases Over Pd–Rh Alloy Catalysts
Topics in Catalysis. 2013. V.56. N11. P.1008-1014. DOI: 10.1007/s11244-013-0064-8 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Published online: | May 30, 2013 |
| Published print: | Aug 1, 2013 |
Identifiers:
| Web of science: | WOS:000321664200017 |
| Scopus: | 2-s2.0-84880410178 |
| Elibrary: | 20442081 |
| Chemical Abstracts: | 2013:851625 |
| Chemical Abstracts (print): | 159:139169 |
| OpenAlex: | W2019578402 |