Three-Way Catalysis with Bimetallic Supported Pd-Au Catalysts: Gold as a Poison and as a Promotor | Sciact - CRIS-system of Boreskov Institute of Catalysis

Three-Way Catalysis with Bimetallic Supported Pd-Au Catalysts: Gold as a Poison and as a Promotor Full article

Journal

Applied Catalysis B: Environmental
ISSN: 0926-3373 , E-ISSN: 1873-3883

Output data

Year: 2021, Volume: 282, Article number : 119614, Pages count : 14 DOI: 10.1016/j.apcatb.2020.119614

Tags

Ageing; Alloying; Support influence; XANES; XRD

Authors

Ulrich Viktor ¹ , Moroz Boris ^2,3 , Pyrjaev Pavel ² , Sinev Ilya ⁴ , Bukhtiyarov Andrey ² , Gerasimov Evgeny ^2,3 , Bukhtiyarov Valerii ^2,3 , Cuenya Beatriz Roldan ^4,5 , Grünert Wolfgang ¹

Affiliations

1	Lehrstuhl Technische Chemie, Ruhr-Universität Bochum, D-44780, Bochum, Germany
2	Boreskov Institute of Catalysis, Novosibirsk, 630090, Russian Federation
3	Novosibirsk State University, Novosibirsk, 630090, Russian Federation
4	Department of Physics, Ruhr-Universität Bochum, D-44780, Bochum, Germany
5	Department of Interface Science, Fritz-Haber-Institut der Max-Planck-Gesellschaft, D-14195, Berlin, Germanym, D-44780, Germany

Funding (5)

1	Federal Agency for Scientific Organizations	0303-2016-0002
2	German Research Foundation	Gr 1447/24-2
3	European Commission	725915 H2020-EU.1.1. OPERANDOCAT
4	Sasol Germany GmbH
5	Umicore & Co. KG Hanau

Three-way catalysts containing Au and/or Pd supported on either CeZrOx (CZ) or La2O3/Al2O3 (LA) were studied with respect to their performance in a model feed and characterized by various techniques (physisorption, CO chemisorption, TEM, XRD, XPS, XANES). A drastic support influence was found in both catalytic behavior and Pd-Au relation. While Au was a strong poison for all catalytic functions of Pd (oxidation, NO reduction) on LA, poisoning was much mitigated on CZ, rendering all Pd containing catalysts superior to a commercial reference. After ageing, the poisoning by Au was aggravated on LA. On CZ, Pd-rich bimetallic combinations retained better activity than Pd/CZ, which still outperformed the reference. As Au did not significantly contribute to propene oxidation and NO reduction, activity of Pd was markedly increased under a promoting influence of Au. Stabilization of PdII by ceria and delayed Pd-Au alloy formation are key features in the CZ-supported PdAu catalysts. © 2020 Elsevier B.V.

Ulrich V. , Moroz B. , Pyrjaev P. , Sinev I. , Bukhtiyarov A. , Gerasimov E. , Bukhtiyarov V. , Cuenya B.R. , Grünert W.
Three-Way Catalysis with Bimetallic Supported Pd-Au Catalysts: Gold as a Poison and as a Promotor
Applied Catalysis B: Environmental. 2021. V.282. 119614 :1-14. DOI: 10.1016/j.apcatb.2020.119614 WOS Scopus РИНЦ AN OpenAlex

Submitted:	Jul 31, 2020
Accepted:	Oct 5, 2020
Published online:	Oct 8, 2020
Published print:	Mar 1, 2021

Web of science:	WOS:000591693100006
Scopus:	2-s2.0-85092745759
Elibrary:	45217811
Chemical Abstracts:	2020:2122787
OpenAlex:	W3092032737

DB	Citing
Scopus	15
Web of science	13
Elibrary	14
OpenAlex	18