Study on the Active Phase Formation of Pd-Zn/Sibunit Catalysts During the Thermal Treatment in Hydrogen | Sciact - CRIS-system of Boreskov Institute of Catalysis

Study on the Active Phase Formation of Pd-Zn/Sibunit Catalysts During the Thermal Treatment in Hydrogen Full article

Journal

Applied Surface Science
ISSN: 0169-4332

Output data

Year: 2019, Volume: 483, Pages: 730-741 Pages count : 12 DOI: 10.1016/j.apsusc.2019.03.215

Tags

Palladium catalyst; Modification with Zn; Nanoparticles; Structural changes; Temperature-programmed reduction

Authors

Glyzdova Daria V. ¹ , Khramov Evgeny V. ² , Smirnova Nadezhda S. ³ , Prosvirin Igor P. ⁴ , Bukhtiyarov Andrey V. ⁴ , Trenikhin Mikhail V. ¹ , Gulyaeva Tatyana I. ¹ , Vedyagin Aleksey A. ⁴ , Shlyapin Dmitry A. ¹ , Lavrenov Alexander V. ¹

Affiliations

1	Institute of Hydrocarbon Processing SB RAS, Neftezavodskaya St., 54, Omsk 644040, Russian Federation
2	National Research Centre “Kurchatov Institute”, Kurchatov Square, 1, Moscow 123182, Russian Federation
3	Kurnakov Institute of General and Inorganic Chemistry RAS, Leninsky Prospect, 31, Moscow 119991, Russian Federation
4	Boreskov Institute of Catalysis SB RAS, pr. Ac. Lavrentieva, 5, 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

In the present research, the process of the formation of the active components of Pd-Zn catalysts supported on carbonaceous material Sibunit prepared by the joint impregnation (Pd:Zn = 1) is studied. It was shown by means of TPR and EXAFS techniques that the interaction between palladium and zinc begins already at T > 200 °C. During the reduction in hydrogen at temperatures of 200–300 °C the surface of particles being formed is enriched with oxidized zinc. In the temperature range of 400–500 °C zinc is completely reduced, and the crystal lattice of a substitutional solid solution based on fcc lattice of palladium is restructured in tetragonal lattice of PdZn. However, an increase of the calcination temperature in H2 atmosphere (500 °C) significantly rises up the probability of partial destruction of bimetallic phase due to the partial migration of zinc atoms from the surface into the bulk of particles.

Glyzdova D.V. , Khramov E.V. , Smirnova N.S. , Prosvirin I.P. , Bukhtiyarov A.V. , Trenikhin M.V. , Gulyaeva T.I. , Vedyagin A.A. , Shlyapin D.A. , Lavrenov A.V.
Study on the Active Phase Formation of Pd-Zn/Sibunit Catalysts During the Thermal Treatment in Hydrogen
Applied Surface Science. 2019. V.483. P.730-741. DOI: 10.1016/j.apsusc.2019.03.215 WOS Scopus РИНЦ ANCAN OpenAlex

Submitted:	Dec 12, 2018
Accepted:	Mar 20, 2019
Published online:	Mar 22, 2019
Published print:	Jul 31, 2019

Web of science:	WOS:000471105000081
Scopus:	2-s2.0-85064012671
Elibrary:	38680042
Chemical Abstracts:	2019:705542
Chemical Abstracts (print):	170:541396
OpenAlex:	W2935898279

DB	Citing
Scopus	19
Web of science	16
Elibrary	21
OpenAlex	22