Выдержка

CO preferential (PROX) and total (TOX) oxidation were studied over Pt and Pt0.5Co0.5 nanopowders. Pt0.5Co0.5 exhibited much higher CO PROX performance than Pt, being highly active and selective at 0–80 °C. Low-temperature activity in CO oxidation was shown to be the key feature of bimetallic Pt-Co catalysts in comparison with monometallic Pt. Density functional theory calculations of the oxidation of CO on Pt13 and Pt12Co clusters revealed that a better catalytic activity of bimetallic cluster is due to an electronic effect: the calculated atomic charges on platinum atoms change when cobalt is introduced into its composition.

Язык оригиналаанглийский
Номер статьи126915
Число страниц3
ЖурналMaterials Letters
Том260
DOI
СостояниеОпубликовано - 1 фев 2020

Отпечаток

Carbon Monoxide
Nanoparticles
Oxidation
nanoparticles
oxidation
Kinetics
kinetics
Density functional theory
catalytic activity
Platinum
Cobalt
Catalyst activity
platinum
cobalt
Thermodynamic properties
density functional theory
catalysts
Atoms
Catalysts
Chemical analysis

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@article{e54d8afa8d5a46b186c71a8d27c1a3be,
title = "A comparative study of CO preferential oxidation over Pt and Pt0.5Co0.5 nanoparticles: Kinetic study and quantum-chemical calculations",
abstract = "CO preferential (PROX) and total (TOX) oxidation were studied over Pt and Pt0.5Co0.5 nanopowders. Pt0.5Co0.5 exhibited much higher CO PROX performance than Pt, being highly active and selective at 0–80 °C. Low-temperature activity in CO oxidation was shown to be the key feature of bimetallic Pt-Co catalysts in comparison with monometallic Pt. Density functional theory calculations of the oxidation of CO on Pt13 and Pt12Co clusters revealed that a better catalytic activity of bimetallic cluster is due to an electronic effect: the calculated atomic charges on platinum atoms change when cobalt is introduced into its composition.",
keywords = "Bimetallic catalysts, Density functional theory, Interfaces, Nanoparticles, Preferential CO oxidation, Pt-Co catalysts, CATALYSIS, HYDROGEN, SELECTIVE OXIDATION, ALLOYS, MODEL, DOUBLE COMPLEX SALT",
author = "Potemkin, {D. I.} and Filatov, {E. Yu} and Zadesenets, {A. V.} and Gorlova, {A. M.} and Nikitina, {N. A.} and Pichugina, {D. A.}",
year = "2020",
month = "2",
day = "1",
doi = "10.1016/j.matlet.2019.126915",
language = "English",
volume = "260",
journal = "Materials Letters",
issn = "0167-577X",
publisher = "Elsevier",

}

A comparative study of CO preferential oxidation over Pt and Pt0.5Co0.5 nanoparticles : Kinetic study and quantum-chemical calculations. / Potemkin, D. I.; Filatov, E. Yu; Zadesenets, A. V.; Gorlova, A. M.; Nikitina, N. A.; Pichugina, D. A.

В: Materials Letters, Том 260, 126915, 01.02.2020.

Результат исследования: Научные публикации в периодических изданияхстатья

TY - JOUR

T1 - A comparative study of CO preferential oxidation over Pt and Pt0.5Co0.5 nanoparticles

T2 - Kinetic study and quantum-chemical calculations

AU - Potemkin, D. I.

AU - Filatov, E. Yu

AU - Zadesenets, A. V.

AU - Gorlova, A. M.

AU - Nikitina, N. A.

AU - Pichugina, D. A.

PY - 2020/2/1

Y1 - 2020/2/1

N2 - CO preferential (PROX) and total (TOX) oxidation were studied over Pt and Pt0.5Co0.5 nanopowders. Pt0.5Co0.5 exhibited much higher CO PROX performance than Pt, being highly active and selective at 0–80 °C. Low-temperature activity in CO oxidation was shown to be the key feature of bimetallic Pt-Co catalysts in comparison with monometallic Pt. Density functional theory calculations of the oxidation of CO on Pt13 and Pt12Co clusters revealed that a better catalytic activity of bimetallic cluster is due to an electronic effect: the calculated atomic charges on platinum atoms change when cobalt is introduced into its composition.

AB - CO preferential (PROX) and total (TOX) oxidation were studied over Pt and Pt0.5Co0.5 nanopowders. Pt0.5Co0.5 exhibited much higher CO PROX performance than Pt, being highly active and selective at 0–80 °C. Low-temperature activity in CO oxidation was shown to be the key feature of bimetallic Pt-Co catalysts in comparison with monometallic Pt. Density functional theory calculations of the oxidation of CO on Pt13 and Pt12Co clusters revealed that a better catalytic activity of bimetallic cluster is due to an electronic effect: the calculated atomic charges on platinum atoms change when cobalt is introduced into its composition.

KW - Bimetallic catalysts

KW - Density functional theory

KW - Interfaces

KW - Nanoparticles

KW - Preferential CO oxidation

KW - Pt-Co catalysts

KW - CATALYSIS

KW - HYDROGEN

KW - SELECTIVE OXIDATION

KW - ALLOYS

KW - MODEL

KW - DOUBLE COMPLEX SALT

UR - http://www.scopus.com/inward/record.url?scp=85075443904&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2019.126915

DO - 10.1016/j.matlet.2019.126915

M3 - Article

AN - SCOPUS:85075443904

VL - 260

JO - Materials Letters

JF - Materials Letters

SN - 0167-577X

M1 - 126915

ER -