Synthesis of Bimetallic AuPt/CeO2 Catalysts and Their Comparative Study in CO Oxidation under Different Reaction Conditions | Sciact - CRIS-система Института катализа

Synthesis of Bimetallic AuPt/CeO2 Catalysts and Their Comparative Study in CO Oxidation under Different Reaction Conditions Научная публикация

Журнал

Reaction Kinetics, Mechanisms and Catalysis
ISSN: 1878-5190 , E-ISSN: 1878-5204

Вых. Данные

Год: 2019, Том: 127, Номер: 1, Страницы: 69–83 Страниц : 15 DOI: 10.1007/s11144-019-01545-5

Ключевые слова

Bimetallic AuPt alloys; Preparation; Double complex salt; CO oxidation; Thermal stability

Авторы

Plyusnin Pavel E. ^1,2 , Slavinskaya Elena M. ³ , Kenzhin Roman M. ³ , Kirilovich Anastasiya K. ^1,2 , Makotchenko Evgeniya V. ¹ , Stonkus Olga A. ^2,3 , Shubin Yury V. ^1,2 , Vedyagin Aleksey A. ^3,4

Организации

1	Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russian Federation
2	Novosibirsk National Research State University, 630090 Novosibirsk, Russian Federation
3	Boreskov Institute of Catalysis SB RAS, Novosibirsk 630090, Russian Federation
4	National Research Tomsk Polytechnic University, 634050 Tomsk, Russian Federation

Информация о финансировании (1)

Российский научный фонд

16-13-10192

In the present work, ceria-supported Au–Pt catalyst with metal ratio 3:2 was prepared using a “single-source precursor” concept. The double complex salt [AuEn2]2[Pt(NO2)4]3·6H2O was used as such precursor. CeO2 of unique morphology with developed surface area (120 m2/g) obtained by urea precipitation technique was used as a support. According to XRD data, size of the alloyed Au–Pt particles was estimated to be less than 3 nm. It was shown that bimetallic Au–Pt system intensifies release of oxygen from the CeO2 lattice. The 0.5%Au2Pt3/CeO2 catalyst was comparatively studied in low temperature CO oxidation (simplified model reaction mixture) and under prompt thermal aging conditions (complex reaction mixture) with regard to monometallic reference samples 0.2%Au/CeO2 and 0.3%Pt/CeO2. The catalytic performance of the samples was found to be significantly dependent on the reaction and pre-treatment conditions. In the case of the bimetallic catalyst, reversible redistribution and enrichment of the nanoparticle surface with Pt or Au were shown to be the key factor defining the activity.

Plyusnin P.E. , Slavinskaya E.M. , Kenzhin R.M. , Kirilovich A.K. , Makotchenko E.V. , Stonkus O.A. , Shubin Y.V. , Vedyagin A.A.
Synthesis of Bimetallic AuPt/CeO2 Catalysts and Their Comparative Study in CO Oxidation under Different Reaction Conditions
Reaction Kinetics, Mechanisms and Catalysis. 2019. V.127. N1. P.69–83. DOI: 10.1007/s11144-019-01545-5 WOS Scopus РИНЦ РИНЦ РИНЦ CAPlus OpenAlex

Поступила в редакцию:	1 дек. 2018 г.
Принята к публикации:	27 янв. 2019 г.
Опубликована online:	31 янв. 2019 г.
Опубликована в печати:	1 июн. 2019 г.

Web of science:	WOS:000468213500007
Scopus:	2-s2.0-85060945255
РИНЦ:	38672027 \| 41789564 \| 41609926
Chemical Abstracts:	2019:628305
OpenAlex:	W2913861613

БД	Цитирований
Scopus	17
Web of science	16
РИНЦ	18
OpenAlex	17