In situ formation of the active sites in Pd-Au bimetallic nanocatalysts for CO oxidation: NAP (near ambient pressure) XPS and MS study.
Andrey V Bukhtiyarov
1, 2, 3, 4, 5
,
Igor P. Prosvirin
1, 2, 3, 4, 5, 6, 7
,
Andrey A. Saraev
1, 2, 3, 4, 5, 6, 7
,
A Yu Klyushin
8, 9, 10, 11
,
A. KNOP-GERICKE
8, 9, 10, 11
,
Valerii Bukhtiyarov
1, 2, 3, 4, 5, 6, 7
3
Sb Ras
4
Novosibirsk
|
5
Russia
|
10
Berlin
11
GERMANY
|
Publication type: Journal Article
Publication date: 2018-01-24
scimago Q1
wos Q3
SJR: 0.878
CiteScore: 6.0
Impact factor: 3.1
ISSN: 13645498, 13596640
PubMed ID:
29877526
Physical and Theoretical Chemistry
Abstract
Model bimetallic Pd-Au/HOPG catalysts have been investigated in the CO oxidation reaction using a combination of NAP XPS and MS techniques. The samples have shown catalytic activity at temperatures above 150 °C. The redistribution of Au and Pd on the surface depending on the reaction conditions has been demonstrated using NAP XPS. The Pd enrichment of the bimetallic particles' surface under reaction gas mixture has been shown. Apparently, CO adsorption induces Pd segregation on the surface. Heating the sample under reaction conditions above 150 °C decomposes the Pd-CO state due to CO desorption and reaction and simultaneous Pd-Au alloy formation on the surface takes place. Cooling back down to RT results in reversible Pd segregation due to Pd-CO formation and the sample becomes inactive. It has been shown that in situ studies are necessary for investigation of the active sites in Pd-Au bimetallic systems.
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Citations from 2024:
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Bukhtiyarov A. V. et al. In situ formation of the active sites in Pd-Au bimetallic nanocatalysts for CO oxidation: NAP (near ambient pressure) XPS and MS study. // Faraday Discussions. 2018. Vol. 208. pp. 255-268.
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Bukhtiyarov A. V., Prosvirin I. P., Saraev A. A., Klyushin A. Yu., KNOP-GERICKE A., Bukhtiyarov V. In situ formation of the active sites in Pd-Au bimetallic nanocatalysts for CO oxidation: NAP (near ambient pressure) XPS and MS study. // Faraday Discussions. 2018. Vol. 208. pp. 255-268.
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TY - JOUR
DO - 10.1039/C7FD00219J
UR - https://xlink.rsc.org/?DOI=C7FD00219J
TI - In situ formation of the active sites in Pd-Au bimetallic nanocatalysts for CO oxidation: NAP (near ambient pressure) XPS and MS study.
T2 - Faraday Discussions
AU - Bukhtiyarov, Andrey V
AU - Prosvirin, Igor P.
AU - Saraev, Andrey A.
AU - Klyushin, A Yu
AU - KNOP-GERICKE, A.
AU - Bukhtiyarov, Valerii
PY - 2018
DA - 2018/01/24
PB - Royal Society of Chemistry (RSC)
SP - 255-268
VL - 208
PMID - 29877526
SN - 1364-5498
SN - 1359-6640
ER -
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@article{2018_Bukhtiyarov,
author = {Andrey V Bukhtiyarov and Igor P. Prosvirin and Andrey A. Saraev and A Yu Klyushin and A. KNOP-GERICKE and Valerii Bukhtiyarov},
title = {In situ formation of the active sites in Pd-Au bimetallic nanocatalysts for CO oxidation: NAP (near ambient pressure) XPS and MS study.},
journal = {Faraday Discussions},
year = {2018},
volume = {208},
publisher = {Royal Society of Chemistry (RSC)},
month = {jan},
url = {https://xlink.rsc.org/?DOI=C7FD00219J},
pages = {255--268},
doi = {10.1039/C7FD00219J}
}