Study on the Modifying Effect of Cobalt in Pd-Co/α-Al2O3 Catalysts for Ethylene Production by Acetylene Hydrogenation | Sciact - CRIS-system of Boreskov Institute of Catalysis

Study on the Modifying Effect of Cobalt in Pd-Co/α-Al2O3 Catalysts for Ethylene Production by Acetylene Hydrogenation Full article

Journal

Chemical Engineering Journal
ISSN: 1385-8947 , E-ISSN: 1873-3212

Output data

Year: 2025, Volume: 516, Article number : 164020, Pages count : 15 DOI: 10.1016/j.cej.2025.164020

Tags

Pd-Co nanoalloy, Bimetallic catalyst, Acetylene hydrogenation, Ethylene production

Authors

Yurpalova Daria V. ¹ , Vinokurov Zakhar S. ² , Prosvirin Igor P. ³ , Panafidin Maxim A. ³ , Bukhtiyarov Andrey V. ³ , Trenikhin Mikhail V. ¹ , Gerasimov Evgeny Yu. ³ , Gulyaeva Tatyana I. ¹ , Temerev Victor L. ¹ , Kovtunova Larisa M. ³ , Yurpalov Vyacheslav L. ¹

Affiliations

1	Center of New Chemical Technologies BIC, Boreskov Institute of Catalysis, Neftezavodskaya st., 54, Omsk 644040, Russia
2	Synchrotron Radiation Facility SKIF, Boreskov Institute of Catalysis, Nikolsky Prosp., 1, Kol’tsovo, 630559, Russia
3	Boreskov Institute of Catalysis, Lavrentiev Ave., 5, Novosibirsk 630090, Russia

Funding (1)

Ministry of Science and Higher Education of the Russian Federation

FWUR-2024-0039

The modifying effect of cobalt on palladium in novel bimetallic Pd-Co catalysts supported on α-alumina was studied, and the catalytic properties of Pd-Co/α-Al2O3 samples in the direct selective hydrogenation of acetylene to ethylene were carefully investigated. It was shown that the temperature of catalyst treatment in hydrogen and the Pd/Co ratio are effective tools for varying nanoparticles composition of the Pd(1-x)Cox solid solution formed in the catalysts. Increasing the reduction temperature and decreasing the Pd/Co molar ratio leads to a gradual increase in the Co content in the Pd(1-x)Cox particles, which provides a slight decrease in activity, but an improvement in ethylene selectivity and the yield of the target product. Using XRD, XPS, HR TEM, TPD-C2H4 and TPR-H2 it was found that an increase in the cobalt concentration in Pd(1-x)Cox nanoparticles suppresses the ability of the active component to activate hydrogen, enhances the electron interaction between Pd and Co and ensures rapid desorption of ethylene from the catalyst surface. The highest selectivity was demonstrated on supported Pd(1-x)Cox nanoparticles with the value of x > 0.4. It was also established that Pd-Co/α-Al2O3 samples with Pd:Co = 1:3 and 1:4 reduced in H2 at 700 ◦C provide a high and stable ethylene yield at a level of 68 % due to the enhanced influence of cobalt on the electronic and geometric properties of palladium in Co-rich PdCo nanoparticles.

Yurpalova D.V. , Vinokurov Z.S. , Prosvirin I.P. , Panafidin M.A. , Bukhtiyarov A.V. , Trenikhin M.V. , Gerasimov E.Y. , Gulyaeva T.I. , Temerev V.L. , Kovtunova L.M. , Yurpalov V.L.
Study on the Modifying Effect of Cobalt in Pd-Co/α-Al2O3 Catalysts for Ethylene Production by Acetylene Hydrogenation
Chemical Engineering Journal. 2025. V.516. 164020 :1-15. DOI: 10.1016/j.cej.2025.164020 Scopus OpenAlex publication_identifier_short.sciact_ihcp_identifier_type

Submitted:	Jan 29, 2025
Accepted:	May 20, 2025
Published online:	May 22, 2025
Published print:	Jul 15, 2025

Scopus:	2-s2.0-105005592471
OpenAlex:	W4410611396
publication_identifier.sciact_ihcp_identifier_type:	4467

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