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

Журнал Applied Catalysis B: Environmental
ISSN: 0926-3373
Вых. Данные Год: 2021, Том: 282, Номер статьи : 119614, Страниц : 14 DOI: 10.1016/j.apcatb.2020.119614
Авторы 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
Организации
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
Реферат: 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.
Библиографическая ссылка: 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 CAPlus OpenAlex Sciact
Даты:
Поступила в редакцию: 31 июл. 2020 г.
Принята к публикации: 5 окт. 2020 г.
Опубликована online: 8 окт. 2020 г.
Опубликована в печати: 1 мар. 2021 г.
Идентификаторы БД:
Web of science: WOS:000591693100006
Scopus: 2-s2.0-85092745759
РИНЦ: 45217811
Chemical Abstracts: 2020:2122787
OpenAlex: W3092032737
Sciact: 38291
Цитирование в БД:
БД Цитирований
Scopus 15
OpenAlex 19
Альметрики: