Synthesis and Study of Bimetallic Pd-Rh System Supported on Zirconia-Doped Alumina as a Component of Three-way Catalysts
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Журнал |
Emission Control Science and Technology
ISSN: 2199-3629
, E-ISSN: 2199-3637
|
| Вых. Данные |
Год: 2019,
Том: 5,
Номер: 4,
Страницы: 363-377
Страниц
: 15
DOI:
10.1007/s40825-019-00133-2
|
| Ключевые слова |
Three-way catalysts; Pd-Rh nanoalloys; Zr-doped alumina; thermal stability; XPS |
| Авторы |
Vedyagin Aleksey A.
1
,
Kenzhin Roman M.
1
,
Tashlanov Mikhail Yu.
1,2
,
Stoyanovskii Vladimir O.
1
,
Plyusnin Pavel E.
2,3
,
Shubin Yury V.
2,3
,
Mishakov Ilya V.
1,2
,
Kalinkin Alexander V.
1
,
Smirnov Mikhail Yu.
1
,
Bukhtiyarov Valerii I.
1,2
|
| Организации |
| 1 |
Federal Scientific Center Boreskov Institute of Catalysis SB RAS
|
| 2 |
National Research Novosibirsk State University
|
| 3 |
Nikolaev Institute of Inorganic Chemistry SB RAS
|
|
Информация о финансировании (1)
|
1
|
Министерство образования и науки Российской Федерации
|
14.581.21.0028 (RFMEFI58117X0028)
|
The present work is aimed at preparation and detailed characterization of the Pd-Rh/γ-Al2O3-ZrO2 composition used as a component of three-way catalysts. Physicochemical properties, such as specific surface area, morphology, secondary structure, dispersity and chemical state of active components, and thermal stability along with catalytic activity were studied within this research. Textural parameters of the samples were examined using low-temperature nitrogen adsorption. Analysis of the morphology and secondary structure was performed by means of electron microscopy. Concentration of metals located on the surface and accessible for the reagents was estimated using test reaction of ethane hydrogenolysis. Method of X-ray photoelectron spectroscopy was applied to investigate the chemical state of active components. Catalytic performance and thermal stability of the samples were tested in a prompt thermal aging regime using CO oxidation reaction as a criterion for in situ characterization of the catalyst state. It was found that both these characteristics strongly depend on the nature and composition of the precursors used.