Stabilization of Active Sites in Alloyed Pd–Rh Catalysts on γ-Al2O3 Support | Sciact - CRIS-система Института катализа

Stabilization of Active Sites in Alloyed Pd–Rh Catalysts on γ-Al2O3 Support Научная публикация

Конференция

7th World Congress on Oxidation Catalysis
09-12 июн. 2013 , Saint Louis

Журнал

Catalysis Today
ISSN: 0920-5861 , E-ISSN: 1873-4308

Вых. Данные

Год: 2014, Том: 238, Страницы: 80-86 Страниц : 7 DOI: 10.1016/j.cattod.2014.02.056

Ключевые слова

EPR, Exhaust gases neutralization, Photoluminescence, Prompt thermal aging, Rhodium-palladium alloy, Three-way catalysts

Авторы

Vedyagin Aleksey A. ^1,2 , Volodin Alexander M. ¹ , Stoyanovskii Vladimir O. ¹ , Kenzhin Roman M. ¹ , Slavinskaya Elena M. ¹ , Mishakov Ilya V. ^1,2 , Plyusnin Pavel E. ^3,4 , Shubin Yury V. ^3,4

Организации

1	Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia
2	Novosibirsk State Technical University, Novosibirsk, Russia
3	Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk, Russia
4	Novosibirsk State University, Novosibirsk, Russia

Информация о финансировании (3)

1	Федеральное агентство научных организаций России	V.45.3.2.
2	Российский фонд фундаментальных исследований	13-03-00988
3	Российский фонд фундаментальных исследований	14-03-00411

Active components for three-way catalysts containing alloyed Pd–Rh particles with the concentration of the components 0.12 and 0.08 wt.%, respectively, were synthesized and studied. The properties of these materials were compared with those of supported catalysts containing one or two precious metals (PM) prepared by mechanical mixing of the components with the same concentrations of PM. The stability of the samples was estimated by in situ prompt thermal aging (PTA) procedure. Photoluminescence (PL) and electron paramagnetic resonance (EPR) were used to show the importance of intrinsic sites of the support in stabilization of single-metal and alloyed Pd-containing clusters with high catalytic activity in CO oxidation. Substantial mutual effect of Pd and Rh in the alloyed particles was revealed. It prevents Pd-containing particles from sintering and hinders diffusion of Rh3+ ions into the bulk of the support at high temperatures. The spin probe technique was used to demonstrate that the alloy formation permits one to improve significantly the catalyst stability to reduction.

Vedyagin A.A. , Volodin A.M. , Stoyanovskii V.O. , Kenzhin R.M. , Slavinskaya E.M. , Mishakov I.V. , Plyusnin P.E. , Shubin Y.V.
Stabilization of Active Sites in Alloyed Pd–Rh Catalysts on γ-Al2O3 Support
Catalysis Today. 2014. V.238. P.80-86. DOI: 10.1016/j.cattod.2014.02.056 WOS Scopus РИНЦ CAPlusCA OpenAlex

Поступила в редакцию:	27 нояб. 2013 г.
Принята к публикации:	27 февр. 2014 г.
Опубликована online:	16 апр. 2014 г.
Опубликована в печати:	1 дек. 2014 г.

Web of science:	WOS:000341878600012
Scopus:	2-s2.0-84907711824
РИНЦ:	23992977
Chemical Abstracts:	2014:641613
Chemical Abstracts (print):	161:540371
OpenAlex:	W2034719063

БД	Цитирований
Web of science	52
Scopus	52
РИНЦ	55
OpenAlex	53