Effect of Reductive Treatment Duration on the Structure and Properties of Pd−Zn/C Catalysts for Liquid‐Phase Acetylene Hydrogenation | Sciact - CRIS-system of Boreskov Institute of Catalysis

Effect of Reductive Treatment Duration on the Structure and Properties of Pd−Zn/C Catalysts for Liquid‐Phase Acetylene Hydrogenation Full article

Journal

ChemCatChem
ISSN: 1867-3880 , E-ISSN: 1867-3899

Output data

Year: 2022, Volume: 14, Number: 21, Article number : e202200893, Pages count : 8 DOI: 10.1002/cctc.202200893

Tags

bimetallic catalyst; palladium; EXAFS spectroscopy; hydrogenation; PdZn

Authors

Glyzdova Daria V. ¹ , Afonasenko Tatyana N. ¹ , Khramov Evgeny V. ² , Trenikhin Mikhail V. ¹ , Prosvirin Igor P. ³ , Shlyapin Dmitry A. ¹

Affiliations

1	Center of New Chemical Technologies BIC, Boreskov Institute of Catalysis, Neftezavodskaya st. 54, 644040 Omsk, Russia
2	National Research Center “Kurchatov Institute”, Kurchatov Square, 1, 123182 Moscow, Russia
3	Federal Research Center Boreskov Institute of Catalysis, 5 Lavrentiev Ave., 630090 Novosibirsk, Russia

Funding (1)

Ministry of Science and Higher Education of the Russian Federation

0239-2021-0002

Structural features of bimetallic Pd−Zn catalysts supported on Sibunit carbon material were studied by EXAFS, TEM, XRD and XPS methods, depending on the heat treatment conditions in hydrogen. It was found that supported particles of PdZn intermetallic compound of tetragonal structure are formed in all samples. An increase in the duration of catalyst reduction in H2 at 500 °C from 1 to 20 hours leads to an increase in the amount of PdZn intermetallic particles (dav=2–3 nm), which is confirmed by the increasing of the Pd−Zn coordination number from 2.4 to 4.3 and by the decreasing of the surface Pd0/PdZn ratio from 0.63 to 0.18. The observed changes in the nature and structure of active sites provide an increase in the ethylene selectivity of Pd−Zn/C catalysts in liquid-phase acetylene hydrogenation.

Glyzdova D.V. , Afonasenko T.N. , Khramov E.V. , Trenikhin M.V. , Prosvirin I.P. , Shlyapin D.A.
Effect of Reductive Treatment Duration on the Structure and Properties of Pd−Zn/C Catalysts for Liquid‐Phase Acetylene Hydrogenation
ChemCatChem. 2022. V.14. N21. e202200893 :1-8. DOI: 10.1002/cctc.202200893 WOS Scopus РИНЦ AN OpenAlex

Submitted:	Jul 14, 2022
Accepted:	Aug 23, 2022
Published online:	Sep 13, 2022
Published print:	Nov 8, 2022

Web of science:	WOS:000864931300001
Scopus:	2-s2.0-85139505293
Elibrary:	52253191
Chemical Abstracts:	2022:2621717
OpenAlex:	W4295803913

DB	Citing
Scopus	8
Web of science	7
Elibrary	8
OpenAlex	9