Design of efficient supported Pd-Co catalysts for selective hydrogenation of acetylene

Design of efficient supported Pd-Co catalysts for selective hydrogenation of acetylene Full article

Journal

Journal of Catalysis
ISSN: 0021-9517 , E-ISSN: 1090-2694

Output data

Year: 2024, Volume: 432, Article number : 115417, Pages count : 13 DOI: 10.1016/j.jcat.2024.115417

Tags

Pd-Co alloy, Bimetallic catalyst, Carbon support, Selective acetylene hydrogenation, Ethylene production

Authors

Yurpalova Daria V. ¹ , Afonasenko Tatyana N. ¹ , Prosvirin Igor P. ² , Bukhtiyarov Andrey V. ² , Kovtunova Larisa M. ² , Vinokurov Zakhar S. ^2,3 , Trenikhin Mikhail V. ¹ , Gerasimov Evgeny Yu. ² , Khramov Evgeny V. ⁴ , Shlyapin Dmitry A. ¹

Affiliations

1	Center of New Chemical Technologies BIC, Boreskov Institute of Catalysis
2	Boreskov Institute of Catalysis
3	Synchrotron Radiation Facility SKIF, Boreskov Institute of Catalysis
4	National Research Center “Kurchatov Institute”

Funding (1)

Ministry of Science and Higher Education of the Russian Federation

FWUR-2024-0039

The research is devoted to the study of active component formation in the novel Pd-Co catalysts supported on carbon material Sibunit. It was shown that 0.5 %Pd–0.5 %Co/C samples exhibit high ethylene yield in the acetylene hydrogenation process due to the presence of fcc PdxCo(1-x) particles. According to in situ XRD-TPR analysis, solid solution formation begins during the reduction of samples in H2 at T ≥ 500 ◦C. Using the EXAFS, XRD and EDX it was established that H2-treatment at 500 ◦C leads to the formation of ~Pd0.6Co0.4 particles and an increase in the reduction temperature to 600 and 700 ◦C is accompanied by the enrichment of the Pd-Co-phase with cobalt to ~Pd0.5Co0.5 and ~Pd0.45Co0.55 compositions, respectively. The ethylene yield on Pd-Co/C catalysts reduced at 500, 600 and 700 ◦C is 56, 66 and 68 %, respectively, which significantly exceeds the ethylene quantity obtained on monometallic Pd/C samples (~52 %). It is assumed that the excellent selectivity of Pd-Co/C samples treated in H2 at 600 and 700 ◦C is due to an increase in the amount of palladium atoms surrounded by cobalt and a change in the palladium electronic state (XPS).

Yurpalova D.V. , Afonasenko T.N. , Prosvirin I.P. , Bukhtiyarov A.V. , Kovtunova L.M. , Vinokurov Z.S. , Trenikhin M.V. , Gerasimov E.Y. , Khramov E.V. , Shlyapin D.A.
Design of efficient supported Pd-Co catalysts for selective hydrogenation of acetylene
Journal of Catalysis. 2024. V.432. 115417 :1-13. DOI: 10.1016/j.jcat.2024.115417 WOS Scopus РИНЦ OpenAlex

Submitted:	Nov 16, 2023
Accepted:	Mar 5, 2024
Published online:	Mar 6, 2024

Web of science:	WOS:001224041900001
Scopus:	2-s2.0-85187198089
Elibrary:	66540084
OpenAlex:	W4392504695

DB	Citing
OpenAlex	4
Scopus	1
Elibrary	1