On the nature of active gold species in zeolites in CO oxidation

A. Simakov, I. Tuzovskaya, A. Pestryakov, N. Bogdanchikova, V. Gurin, M. Avalos, M. H. Farías

Результат исследований: Материалы для журналаСтатья

41 Цитирования (Scopus)

Выдержка

It was disclosed for Au/zeolites that not one, but several active sites can be reactive in CO oxidation on the same catalyst. Au3+ cationic species do not show the activity under studied conditions. Gold nanoparticles (1.5-5 nm) are characterized by activity at high temperature. Gold clusters display activity in low-temperature region, but only after sample pretreatment in He at 500 °C. Nanoparticle active sites are stable during reaction, in contrast with cluster active sites. The last ones lost activity probably due to complete oxidation and can be reactivated by He treatment. This investigation revealed that clusters are the most active, but not stable and are easily oxidized by oxygen, while stable nanoparticles are less active.

Язык оригиналаАнглийский
Страницы (с-по)121-128
Число страниц8
ЖурналApplied Catalysis A: General
Том331
Номер выпуска1
DOI
СостояниеОпубликовано - 2007

Отпечаток

Zeolites
Carbon Monoxide
Gold
Nanoparticles
Oxidation
Thermodynamic properties
Oxygen
Temperature
Catalysts

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

Цитировать

Simakov, A., Tuzovskaya, I., Pestryakov, A., Bogdanchikova, N., Gurin, V., Avalos, M., & Farías, M. H. (2007). On the nature of active gold species in zeolites in CO oxidation. Applied Catalysis A: General, 331(1), 121-128. https://doi.org/10.1016/j.apcata.2007.07.039

On the nature of active gold species in zeolites in CO oxidation. / Simakov, A.; Tuzovskaya, I.; Pestryakov, A.; Bogdanchikova, N.; Gurin, V.; Avalos, M.; Farías, M. H.

В: Applied Catalysis A: General, Том 331, № 1, 2007, стр. 121-128.

Результат исследований: Материалы для журналаСтатья

Simakov, A, Tuzovskaya, I, Pestryakov, A, Bogdanchikova, N, Gurin, V, Avalos, M & Farías, MH 2007, 'On the nature of active gold species in zeolites in CO oxidation', Applied Catalysis A: General, том. 331, № 1, стр. 121-128. https://doi.org/10.1016/j.apcata.2007.07.039
Simakov A, Tuzovskaya I, Pestryakov A, Bogdanchikova N, Gurin V, Avalos M и соавт. On the nature of active gold species in zeolites in CO oxidation. Applied Catalysis A: General. 2007;331(1):121-128. https://doi.org/10.1016/j.apcata.2007.07.039
Simakov, A. ; Tuzovskaya, I. ; Pestryakov, A. ; Bogdanchikova, N. ; Gurin, V. ; Avalos, M. ; Farías, M. H. / On the nature of active gold species in zeolites in CO oxidation. В: Applied Catalysis A: General. 2007 ; Том 331, № 1. стр. 121-128.
@article{4d027d9f19604220af396126cc62ad3a,
title = "On the nature of active gold species in zeolites in CO oxidation",
abstract = "It was disclosed for Au/zeolites that not one, but several active sites can be reactive in CO oxidation on the same catalyst. Au3+ cationic species do not show the activity under studied conditions. Gold nanoparticles (1.5-5 nm) are characterized by activity at high temperature. Gold clusters display activity in low-temperature region, but only after sample pretreatment in He at 500 °C. Nanoparticle active sites are stable during reaction, in contrast with cluster active sites. The last ones lost activity probably due to complete oxidation and can be reactivated by He treatment. This investigation revealed that clusters are the most active, but not stable and are easily oxidized by oxygen, while stable nanoparticles are less active.",
keywords = "Active sites, CO oxidation, Gold, Zeolite",
author = "A. Simakov and I. Tuzovskaya and A. Pestryakov and N. Bogdanchikova and V. Gurin and M. Avalos and Far{\'i}as, {M. H.}",
year = "2007",
doi = "10.1016/j.apcata.2007.07.039",
language = "English",
volume = "331",
pages = "121--128",
journal = "Applied Catalysis A: General",
issn = "0926-860X",
publisher = "Elsevier",
number = "1",

}

TY - JOUR

T1 - On the nature of active gold species in zeolites in CO oxidation

AU - Simakov, A.

AU - Tuzovskaya, I.

AU - Pestryakov, A.

AU - Bogdanchikova, N.

AU - Gurin, V.

AU - Avalos, M.

AU - Farías, M. H.

PY - 2007

Y1 - 2007

N2 - It was disclosed for Au/zeolites that not one, but several active sites can be reactive in CO oxidation on the same catalyst. Au3+ cationic species do not show the activity under studied conditions. Gold nanoparticles (1.5-5 nm) are characterized by activity at high temperature. Gold clusters display activity in low-temperature region, but only after sample pretreatment in He at 500 °C. Nanoparticle active sites are stable during reaction, in contrast with cluster active sites. The last ones lost activity probably due to complete oxidation and can be reactivated by He treatment. This investigation revealed that clusters are the most active, but not stable and are easily oxidized by oxygen, while stable nanoparticles are less active.

AB - It was disclosed for Au/zeolites that not one, but several active sites can be reactive in CO oxidation on the same catalyst. Au3+ cationic species do not show the activity under studied conditions. Gold nanoparticles (1.5-5 nm) are characterized by activity at high temperature. Gold clusters display activity in low-temperature region, but only after sample pretreatment in He at 500 °C. Nanoparticle active sites are stable during reaction, in contrast with cluster active sites. The last ones lost activity probably due to complete oxidation and can be reactivated by He treatment. This investigation revealed that clusters are the most active, but not stable and are easily oxidized by oxygen, while stable nanoparticles are less active.

KW - Active sites

KW - CO oxidation

KW - Gold

KW - Zeolite

UR - http://www.scopus.com/inward/record.url?scp=34548613891&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34548613891&partnerID=8YFLogxK

U2 - 10.1016/j.apcata.2007.07.039

DO - 10.1016/j.apcata.2007.07.039

M3 - Article

AN - SCOPUS:34548613891

VL - 331

SP - 121

EP - 128

JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

SN - 0926-860X

IS - 1

ER -