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Effect of Metal Ratio in Alumina-Supported Pd-Rh Nanoalloys on Its Performance in Three Way Catalysis Научная публикация

Журнал Journal of Alloys and Compounds
ISSN: 0925-8388 , E-ISSN: 1873-4669
Вых. Данные Год: 2018, Том: 749, Страницы: 155-162 Страниц : 8 DOI: 10.1016/j.jallcom.2018.03.250
Ключевые слова Three-way catalysts; Metastable Pd-Rh alloy; Partly miscible metals; Metal ratio; Stability
Авторы Vedyagin Aleksey A. 1,2 , Stoyanovskii Vladimir O. 1 , Plyusnin Pavel E. 3,4 , Shubin Yury V. 3,4 , Slavinskaya Elena M. 1 , Mishakov Ilya V. 1,2
Организации
1 Boreskov Institute of Catalysis, SB RAS, Novosibirsk, 630090, Russia
2 National Research Tomsk Polytechnic University, Tomsk, 634050, Russia
3 Nikolaev Institute of Inorganic Chemistry, SB RAS, Novosibirsk, 630090, Russia
4 Novosibirsk State University, Novosibirsk, 630090, Russia

Информация о финансировании (1)

1 Российский научный фонд 16-13-10192

Реферат: The bimetallic Pd-Rh three-way catalysts were prepared by an incipient wetness impregnation of γ-Al2O3 with a joint solution of [Pd(NH3)4](NO3)2 and Na3 [Rh(NO2)6]. The ratio of the metals was varied by changing the ratio of the salt-precursors. The samples with Pd:Rh ratio of 3:2, 7:3 and 4:1 were compared in simultaneous oxidation of carbon monoxide, propane, propylene, and reduction of nitrogen monoxide at a lambda factor of 1.003 and 0.95. Stability tests were performed in a prompt thermal aging regime (consecutive heating-cooling cycles with a final temperature of 320, 600 and 800 °C). The samples were characterized by UV–vis and luminescence spectroscopies, and by testing reaction of ethane hydrogenolysis. It was found that the sample with Pd:Rh ratio of 3:2 is characterized with strong palladium-rhodium interaction, which makes this catalyst more stable at high temperature if compare with other alloyed Pd-Rh samples. Moreover, the mechanism of the three-way catalytic process over Pd:Rh (3:2) sample differs from other cases and involves a larger contribution of reactions with nitrogen oxide.
Библиографическая ссылка: Vedyagin A.A. , Stoyanovskii V.O. , Plyusnin P.E. , Shubin Y.V. , Slavinskaya E.M. , Mishakov I.V.
Effect of Metal Ratio in Alumina-Supported Pd-Rh Nanoalloys on Its Performance in Three Way Catalysis
Journal of Alloys and Compounds. 2018. V.749. P.155-162. DOI: 10.1016/j.jallcom.2018.03.250 WOS Scopus РИНЦ CAPlusCA OpenAlex
Даты:
Поступила в редакцию: 1 дек. 2017 г.
Принята к публикации: 20 мар. 2018 г.
Опубликована online: 23 мар. 2018 г.
Опубликована в печати: 1 июн. 2018 г.
Идентификаторы БД:
Web of science: WOS:000432666200016
Scopus: 2-s2.0-85044605433
РИНЦ: 35488783
Chemical Abstracts: 2018:665315
Chemical Abstracts (print): 168:411613
OpenAlex: W2791274404
Цитирование в БД:
БД Цитирований
Web of science 30
Scopus 33
РИНЦ 29
OpenAlex 31
Альметрики: