The water-gas shift reaction over CeO/CuO: Operando SSITKA-DRIFTS-mass spectrometry study of low temperature mechanism

A. Lopez Camara; Sarayute Chansai; C. Hardacre; A. Martinez-Arias

doi:10.1016/j.ijhydene.2013.05.087

The water-gas shift reaction over CeO/CuO: Operando SSITKA-DRIFTS-mass spectrometry study of low temperature mechanism

A. Lopez Camara^*, Sarayute Chansai, C. Hardacre, A. Martinez-Arias

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

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

35 Citations (Scopus)

Abstract

An inverse CeO2/CuO catalyst has been investigated by operando steady-state isotopic transient kinetic analysis (SSITKA) in combination with diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) under 3% CO +3% H2O reactant mixture at 473 K with the aim of determining intermediates involved in the water gas shift reaction at relatively low temperatures. Among the various species detected in the infrared spectra which may be involved in the reaction, i.e. formates, copper carbonyls and carbonates, a particular type of carbonate species is identified as a reaction intermediate on the basis of detailed analysis of the spectra during isotopic exchange in comparison with the change in the corresponding isotopically labelled CO2 product.

Original language	English
Pages (from-to)	4095-4101
Number of pages	7
Journal	International Journal of Hydrogen Energy
Volume	39
Issue number	8
Early online date	18 Jun 2013
DOIs	https://doi.org/10.1016/j.ijhydene.2013.05.087
Publication status	Published - 06 Mar 2014

Keywords

CeO2/CuO catalyst
WGS
Operando SSITKA-DRIFTS-MS
TRANSFORM INFRARED-SPECTROSCOPY
PT/CEO2 CATALYST
IN-SITU
ROOM-TEMPERATURE
CARBON-MONOXIDE
CERIA
COPPER
ADSORPTION
FORMATE
HYDROGEN

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10.1016/j.ijhydene.2013.05.087

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@article{87777cfa8080466da383334df106c116,

title = "The water-gas shift reaction over CeO/CuO: Operando SSITKA-DRIFTS-mass spectrometry study of low temperature mechanism",

abstract = "An inverse CeO2/CuO catalyst has been investigated by operando steady-state isotopic transient kinetic analysis (SSITKA) in combination with diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) under 3% CO +3% H2O reactant mixture at 473 K with the aim of determining intermediates involved in the water gas shift reaction at relatively low temperatures. Among the various species detected in the infrared spectra which may be involved in the reaction, i.e. formates, copper carbonyls and carbonates, a particular type of carbonate species is identified as a reaction intermediate on the basis of detailed analysis of the spectra during isotopic exchange in comparison with the change in the corresponding isotopically labelled CO2 product. ",

keywords = "CeO2/CuO catalyst, WGS, Operando SSITKA-DRIFTS-MS, TRANSFORM INFRARED-SPECTROSCOPY, PT/CEO2 CATALYST, IN-SITU, ROOM-TEMPERATURE, CARBON-MONOXIDE, CERIA, COPPER, ADSORPTION, FORMATE, HYDROGEN",

author = "{Lopez Camara}, A. and Sarayute Chansai and C. Hardacre and A. Martinez-Arias",

year = "2014",

month = mar,

day = "6",

doi = "10.1016/j.ijhydene.2013.05.087",

language = "English",

volume = "39",

pages = "4095--4101",

journal = "International Journal of Hydrogen Energy",

issn = "0360-3199",

publisher = "Elsevier Ltd",

number = "8",

}

TY - JOUR

T1 - The water-gas shift reaction over CeO/CuO

T2 - Operando SSITKA-DRIFTS-mass spectrometry study of low temperature mechanism

AU - Lopez Camara, A.

AU - Chansai, Sarayute

AU - Hardacre, C.

AU - Martinez-Arias, A.

PY - 2014/3/6

Y1 - 2014/3/6

N2 - An inverse CeO2/CuO catalyst has been investigated by operando steady-state isotopic transient kinetic analysis (SSITKA) in combination with diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) under 3% CO +3% H2O reactant mixture at 473 K with the aim of determining intermediates involved in the water gas shift reaction at relatively low temperatures. Among the various species detected in the infrared spectra which may be involved in the reaction, i.e. formates, copper carbonyls and carbonates, a particular type of carbonate species is identified as a reaction intermediate on the basis of detailed analysis of the spectra during isotopic exchange in comparison with the change in the corresponding isotopically labelled CO2 product.

AB - An inverse CeO2/CuO catalyst has been investigated by operando steady-state isotopic transient kinetic analysis (SSITKA) in combination with diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) under 3% CO +3% H2O reactant mixture at 473 K with the aim of determining intermediates involved in the water gas shift reaction at relatively low temperatures. Among the various species detected in the infrared spectra which may be involved in the reaction, i.e. formates, copper carbonyls and carbonates, a particular type of carbonate species is identified as a reaction intermediate on the basis of detailed analysis of the spectra during isotopic exchange in comparison with the change in the corresponding isotopically labelled CO2 product.

KW - CeO2/CuO catalyst

KW - WGS

KW - Operando SSITKA-DRIFTS-MS

KW - TRANSFORM INFRARED-SPECTROSCOPY

KW - PT/CEO2 CATALYST

KW - IN-SITU

KW - ROOM-TEMPERATURE

KW - CARBON-MONOXIDE

KW - CERIA

KW - COPPER

KW - ADSORPTION

KW - FORMATE

KW - HYDROGEN

U2 - 10.1016/j.ijhydene.2013.05.087

DO - 10.1016/j.ijhydene.2013.05.087

M3 - Article

SN - 0360-3199

VL - 39

SP - 4095

EP - 4101

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 8

ER -

The water-gas shift reaction over CeO/CuO: Operando SSITKA-DRIFTS-mass spectrometry study of low temperature mechanism

Abstract

Keywords

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