Formation of Active Bimetallic Species in Pd–Mn/Sibunit Catalysts for Selective Hydrogenation of Acetylene to Ethylene | Sciact - CRIS-system of Boreskov Institute of Catalysis

Formation of Active Bimetallic Species in Pd–Mn/Sibunit Catalysts for Selective Hydrogenation of Acetylene to Ethylene Full article

Journal

Research on Chemical Intermediates
ISSN: 0922-6168 , E-ISSN: 1568-5675

Output data

Year: 2025, DOI: 10.1007/s11164-025-05804-0

Tags

Pd–Mn, Bimetallic catalyst, Pd3Mn2, Carbon support, Acetylene hydrogenation, Ethylene production

Authors

Yurpalova Daria V. ¹ , Vinokurov Zakhar S. ² , Khramov Evgeny V. ³ , Prosvirin Igor P. ⁴ , Panafidin Maxim A. ² , Bukhtiyarov Andrey V. ² , Gerasimov Evgeny Yu. ⁴ , Trenikhin Mikhail V. ¹ , Kovtunova Larisa M. ⁴ , 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	National Research Center “Kurchatov Institute”, Kurchatov Square, 1, Moscow 123182, Russia
4	Boreskov Institute of Catalysis, Lavrentiev Ave., 5, Novosibirsk 630090, Russia

Funding (2)

1	Ministry of Science and Higher Education of the Russian Federation	FWUR-2024-0039
2	Ministry of Science and Higher Education of the Russian Federation	FWUR-2024-0042

New bimetallic Pd–Mn catalysts supported on the carbon material Sibunit have been obtained and studied for the process of producing ethylene by acetylene hydrogenation. The composition, structure, morphology and electronic state of the active phase have been studied in detail depending on the temperature of treatment in hydrogen and the Pd/Mn ratio by XRD, XANES, EXAFS, TEM, XPS. It has been found that the active species are the nanoparticles of intermetallic tetragonal structure Pd3Mn2 that formed during the treatment of Pd–Mn/Sibunit in H2 at 500 °C. Increasing the reduction temperature to 600–700 °C provides an increase in the proportion of the Pd3Mn2 phase due to more complete involvement of palladium in the interaction with manganese. Pd3Mn2 nanoparticles are less active but more selective than Pd nanoparticles due to changes in the geometry of active sites and their electronic state. It is shown that catalysts containing a twofold molar excess of Mn relative to Pd are characterized by the presence of more dispersed bimetallic particles than samples containing less manganese, due to which they are characterized by higher activity. Pd–Mn/Sibunit catalysts provide a high ethylene yield (up to 75%), which makes them promising materials for the process of acetylene hydrogenation to ethylene.

Yurpalova D.V. , Vinokurov Z.S. , Khramov E.V. , Prosvirin I.P. , Panafidin M.A. , Bukhtiyarov A.V. , Gerasimov E.Y. , Trenikhin M.V. , Kovtunova L.M. , Yurpalov V.L.
Formation of Active Bimetallic Species in Pd–Mn/Sibunit Catalysts for Selective Hydrogenation of Acetylene to Ethylene
Research on Chemical Intermediates. 2025. DOI: 10.1007/s11164-025-05804-0 OpenAlex publication_identifier_short.sciact_ihcp_identifier_type

Submitted:	Aug 18, 2025
Accepted:	Oct 27, 2025
Published online:	Nov 4, 2025

OpenAlex:	W4415849727
publication_identifier.sciact_ihcp_identifier_type:	4510

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