More active Ir subnanometer clusters than single-atoms for catalytic oxidation of CO at low temperature

Jian Lin; Yang Chen; Yanliang Zhou; Lin Li; Botao Qiao; Aiqin Wang; Jingyue Liu; Xiaodong Wang; Tao Zhang

doi:10.1002/aic.15756

More active Ir subnanometer clusters than single-atoms for catalytic oxidation of CO at low temperature

Jian Lin, Yang Chen, Yanliang Zhou, Lin Li, Botao Qiao, Aiqin Wang, Jingyue Liu, Xiaodong Wang, Tao Zhang

Research output: Contribution to journal › Article › peer-review

43 Scopus citations

Abstract

This work reported the adsorption and reaction performance of FeO_x supported subnanometer cluster and single-atom Ir catalysts for the oxidation of CO at low temperature. By varying the pretreatment temperature and Ir loading, the single-atom and subnanometer cluster Ir catalysts were obtained. The Ir subnanometer clusters exhibited higher activity for the oxidation of CO with or without the presence of H₂ than the single-atom counterpart. By using adsorption microcalorimetry and in situ infrared spectroscopy measurements, it was found that the Ir subnanometer clusters not only promoted the adsorption and reaction of CO and O₂ but also facilitated the formation of OH species from reaction between H₂ and O₂, thus opening a new reaction pathway between CO and OH species to produce CO₂ compared with that between CO and O species on the single-atom counterpart.

Original language	English (US)
Pages (from-to)	4003-4012
Number of pages	10
Journal	AIChE Journal
Volume	63
Issue number	9
DOIs	https://doi.org/10.1002/aic.15756
State	Published - Sep 2017

Keywords

CO
CO oxidation
Ir
single atoms
subnanometer clusters

ASJC Scopus subject areas

Biotechnology
Environmental Engineering
General Chemical Engineering

Access to Document

10.1002/aic.15756

Cite this

@article{61eeea7475bc45dc8fb46a557fe13c22,

title = "More active Ir subnanometer clusters than single-atoms for catalytic oxidation of CO at low temperature",

abstract = "This work reported the adsorption and reaction performance of FeOx supported subnanometer cluster and single-atom Ir catalysts for the oxidation of CO at low temperature. By varying the pretreatment temperature and Ir loading, the single-atom and subnanometer cluster Ir catalysts were obtained. The Ir subnanometer clusters exhibited higher activity for the oxidation of CO with or without the presence of H2 than the single-atom counterpart. By using adsorption microcalorimetry and in situ infrared spectroscopy measurements, it was found that the Ir subnanometer clusters not only promoted the adsorption and reaction of CO and O2 but also facilitated the formation of OH species from reaction between H2 and O2, thus opening a new reaction pathway between CO and OH species to produce CO2 compared with that between CO and O species on the single-atom counterpart.",

keywords = "CO, CO oxidation, Ir, single atoms, subnanometer clusters",

author = "Jian Lin and Yang Chen and Yanliang Zhou and Lin Li and Botao Qiao and Aiqin Wang and Jingyue Liu and Xiaodong Wang and Tao Zhang",

note = "Publisher Copyright: {\textcopyright} 2017 American Institute of Chemical Engineers",

year = "2017",

month = sep,

doi = "10.1002/aic.15756",

language = "English (US)",

volume = "63",

pages = "4003--4012",

journal = "AIChE Journal",

issn = "0001-1541",

publisher = "American Institute of Chemical Engineers",

number = "9",

}

TY - JOUR

T1 - More active Ir subnanometer clusters than single-atoms for catalytic oxidation of CO at low temperature

AU - Lin, Jian

AU - Chen, Yang

AU - Zhou, Yanliang

AU - Li, Lin

AU - Qiao, Botao

AU - Wang, Aiqin

AU - Liu, Jingyue

AU - Wang, Xiaodong

AU - Zhang, Tao

PY - 2017/9

Y1 - 2017/9

N2 - This work reported the adsorption and reaction performance of FeOx supported subnanometer cluster and single-atom Ir catalysts for the oxidation of CO at low temperature. By varying the pretreatment temperature and Ir loading, the single-atom and subnanometer cluster Ir catalysts were obtained. The Ir subnanometer clusters exhibited higher activity for the oxidation of CO with or without the presence of H2 than the single-atom counterpart. By using adsorption microcalorimetry and in situ infrared spectroscopy measurements, it was found that the Ir subnanometer clusters not only promoted the adsorption and reaction of CO and O2 but also facilitated the formation of OH species from reaction between H2 and O2, thus opening a new reaction pathway between CO and OH species to produce CO2 compared with that between CO and O species on the single-atom counterpart.

AB - This work reported the adsorption and reaction performance of FeOx supported subnanometer cluster and single-atom Ir catalysts for the oxidation of CO at low temperature. By varying the pretreatment temperature and Ir loading, the single-atom and subnanometer cluster Ir catalysts were obtained. The Ir subnanometer clusters exhibited higher activity for the oxidation of CO with or without the presence of H2 than the single-atom counterpart. By using adsorption microcalorimetry and in situ infrared spectroscopy measurements, it was found that the Ir subnanometer clusters not only promoted the adsorption and reaction of CO and O2 but also facilitated the formation of OH species from reaction between H2 and O2, thus opening a new reaction pathway between CO and OH species to produce CO2 compared with that between CO and O species on the single-atom counterpart.

KW - CO

KW - CO oxidation

KW - Ir

KW - single atoms

KW - subnanometer clusters

UR - http://www.scopus.com/inward/record.url?scp=85018733315&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85018733315&partnerID=8YFLogxK

U2 - 10.1002/aic.15756

DO - 10.1002/aic.15756

M3 - Article

AN - SCOPUS:85018733315

SN - 0001-1541

VL - 63

SP - 4003

EP - 4012

JO - AIChE Journal

JF - AIChE Journal

IS - 9

ER -

More active Ir subnanometer clusters than single-atoms for catalytic oxidation of CO at low temperature

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this