Synthesis of Bimetallic AuPt/CeO2 Catalysts and Their Comparative Study in CO Oxidation under Different Reaction Conditions | Sciact - CRIS-system of Boreskov Institute of Catalysis

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

Journal

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

Output data

Year: 2019, Volume: 127, Number: 1, Pages: 69–83 Pages count : 15 DOI: 10.1007/s11144-019-01545-5

Tags

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

Authors

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

Affiliations

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

Funding (1)

Russian Science Foundation

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 AN OpenAlex

Submitted:	Dec 1, 2018
Accepted:	Jan 27, 2019
Published online:	Jan 31, 2019
Published print:	Jun 1, 2019

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

DB	Citing
Scopus	18
Web of science	17
Elibrary	19
OpenAlex	17