Advantages and Disadvantages of Barium Oxide Addition to Bimetallic Pd-Rh Three-Way Catalysts Supported on Zirconia-Doped Alumina | Sciact - CRIS-system of Boreskov Institute of Catalysis

Advantages and Disadvantages of Barium Oxide Addition to Bimetallic Pd-Rh Three-Way Catalysts Supported on Zirconia-Doped Alumina Full article

Journal

Journal of Environmental Chemical Engineering
ISSN: 2213-3437

Output data

Year: 2024, Volume: 12, Number: 3, Article number : 112945, Pages count : 15 DOI: 10.1016/j.jece.2024.112945

Tags

three-way catalysts; bimetallic Pd-Rh catalysts; thermal aging; barium oxide; metal-support interaction; characterization

Authors

Alikin Evgeny A. ¹ , Baksheev Evgeny O. ^1,2 , Veselov Grigory B. ³ , Kenzhin Roman M. ³ , Stoyanovskii Vladimir O. ³ , Plyusnin Pavel E. ⁴ , Shubin Yury V. ⁴ , Vedyagin Aleksey A. ³

Affiliations

1	Ecoalliance LLC, Novouralsk 624131, Russian Federation
2	Department of Rare Metals and Nanomaterials, Ural Federal University, Ekaterinburg 620075, Russian Federation
3	Boreskov Institute of Catalysis, Novosibirsk 630090, Russian Federation
4	Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russian Federation

Funding (2)

1	The Ministry of Education and Science of the Russian Federation	FWUZ-2021-0002 (121031700315-2)
2	Ministry of Science and Higher Education of the Russian Federation	FWUR-2024-0034

Due to enhanced high-temperature stability, zirconia-stabilized alumina is widely used as a support of three-way catalysts. The addition of barium oxide is known to improve the catalytic performance of the composition. In order to go in-depth about the effects of BaO addition, a series of samples was prepared using nitrates and complex salts as a precursor. The interaction of BaO with alumina was found to change dramatically the metal-support interaction of the latter with metals. Thus, the presence of BaO resulted in the sintering of Pd with the formation of agglomerated Pd0 species, which explains a lower activity in CO oxidation of the BaO-doped samples after thermal treatment. Contrarily, the addition of barium nitrate showed a positive effect, inhibiting the collapse of the porous structure of the support, which was the most crucial and accompanied by the formation of the α-Al2O3 phase when no barium nitrate was added.

Alikin E.A. , Baksheev E.O. , Veselov G.B. , Kenzhin R.M. , Stoyanovskii V.O. , Plyusnin P.E. , Shubin Y.V. , Vedyagin A.A.
Advantages and Disadvantages of Barium Oxide Addition to Bimetallic Pd-Rh Three-Way Catalysts Supported on Zirconia-Doped Alumina
Journal of Environmental Chemical Engineering. 2024. V.12. N3. 112945 :1-15. DOI: 10.1016/j.jece.2024.112945 WOS Scopus РИНЦ AN OpenAlex

Submitted:	Feb 8, 2024
Accepted:	Apr 29, 2024
Published online:	Apr 30, 2024
Published print:	Jun 1, 2024

Web of science:	WOS:001238365200001
Scopus:	2-s2.0-85192020852
Elibrary:	68099641
Chemical Abstracts:	2024:985199
OpenAlex:	W4396520432

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Scopus	1
Web of science	1