Zinc Addition Influence on the Properties of Pd/Sibunit Catalyst in Selective Acetylene Hydrogenation | Sciact - CRIS-system of Boreskov Institute of Catalysis

Zinc Addition Influence on the Properties of Pd/Sibunit Catalyst in Selective Acetylene Hydrogenation Full article

Conference

XI International Conference Mechanisms of Catalytic Reactions
07-11 Oct 2019 , Сочи

Journal

Topics in Catalysis
ISSN: 1022-5528 , E-ISSN: 1572-9028

Output data

Year: 2020, Volume: 63, Number: 1-2, Pages: 139-151 Pages count : 13 DOI: 10.1007/s11244-019-01215-9

Tags

Bimetallic nanoparticles; Modification by Zn; Palladium catalyst; Selective acetylene hydrogenation; Structural changes

Authors

Glyzdova Daria V. ¹ , Afonasenko Tatyana N. ¹ , Khramov Evgeny V. ² , Leont’eva Natalya N. ¹ , Trenikhin Mikhail V. ^1,3 , Prosvirin Igor P. ⁴ , Bukhtiyarov Andrey V. ⁴ , Shlyapin Dmitry A. ¹

Affiliations

1	Center of New Chemical Technologies BIC, Neftezavodskaya St., 54, Omsk, 644040, Russian Federation
2	National Research Center “Kurchatov Institute”, Kurchatov Square, 1, Moscow, 123182, Russian Federation
3	Omsk State Technical University, Pr. Mira, 11, Omsk, 644050, Russian Federation
4	Federal Research Center Boreskov Institute of Catalysis, 5 Lavrentiev Ave., Novosibirsk, 630090, Russian Federation

Funding (2)

1	Federal Agency for Scientific Organizations	V.46.2.5. (АААА-А17-117021450096-8)
2	Haldor Topsoe A/S

A series of bimetallic Pd–Zn catalysts supported on the carbon material Sibunit was synthesized for selective hydrogenation of acetylene. XRD, XPS, XAFS and TEM data revealed that the structure and dispersion of bimetallic particles in Pd–Zn/Sibunit samples depend on the molar ratio Pd:Zn. The active component of the Pd–Zn(1:0.25)/Sibunit sample is a substitutional solid solution. In the catalysts with Pd:Zn ≤ 1, the interaction proceeds more completely with the transformation of FCC lattice of the solid solution into the tetragonal structure of intermetallic phase with the composition close to PdZn, whereas an excess of zinc forms the individual ZnO phase. It was found that an increase in the zinc content in Pd–Zn/Sibunit catalysts from Pd:Zn = 1:0 to 1:4 leads to dispergation of the deposited mono- and bimetallic particles from dav = 7.2 to 2.0 nm. The formation of the PdZn intermetallic compound with increasing the zinc content from Pd:Zn = 1:0 to 1:1 is accompanied by a gradual increase in selectivity to ethylene from 42% for Pd/Sibunit to 67% for Pd–Zn(1:1)/Sibunit (the reaction temperature is 95 °C), and also by a decrease in activity. The introduction of a zinc excess (Pd:Zn < 1), on the contrary, decreases the hydrogenation selectivity to ~ 62%, presumably owing to a high dispersion of bimetallic particles. © 2020, Springer Science+Business Media, LLC, part of Springer Nature.

Glyzdova D.V. , Afonasenko T.N. , Khramov E.V. , Leont’eva N.N. , Trenikhin M.V. , Prosvirin I.P. , Bukhtiyarov A.V. , Shlyapin D.A.
Zinc Addition Influence on the Properties of Pd/Sibunit Catalyst in Selective Acetylene Hydrogenation
Topics in Catalysis. 2020. V.63. N1-2. P.139-151. DOI: 10.1007/s11244-019-01215-9 WOS Scopus РИНЦ AN OpenAlex publication_identifier_short.sciact_ihcp_identifier_type

Published online:	Jan 1, 2020
Published print:	Mar 1, 2020

Web of science:	WOS:000519929000015
Scopus:	2-s2.0-85077182836
Elibrary:	43223202
Chemical Abstracts:	2020:26306
OpenAlex:	W2998566484
publication_identifier.sciact_ihcp_identifier_type:	2626

DB	Citing
Scopus	19
Web of science	13
Elibrary	18
OpenAlex	19