Single stage water gas shift conversion over Pt/TiO2 - Problem of catalyst deactivation.

K.G.H. Azzam; Igor V. Babych; Kulathuiyer Seshan; Leonardus Lefferts

doi:10.1016/j.apcata.2007.12.020

Single stage water gas shift conversion over Pt/TiO2 - Problem of catalyst deactivation.

K.G.H. Azzam, Igor V. Babych, Kulathuiyer Seshan, Leonardus Lefferts

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

36 Citations (Scopus)

Abstract

Pt/TiO2 is an active and selective catalyst for single stage water gas shift reaction. However, the catalyst deactivated with time on stream. Detailed studies of fresh, used, and reactivated Pt/TiO2 catalysts were carried out using kinetic (steady state and transient) and in situ IR spectroscopic methods in order to understand the mechanism of deactivation. The loss of Pt surface area was the cause of Pt/TiO2 deactivation, exclusively. Pt sintering occurred mainly due to the presence of traces of formaldehyde formed under WGS reaction conditions by reaction of H2 and CO. Details concerning the deactivation behavior are discussed.

Original language	Undefined
Pages (from-to)	66-71
Number of pages	6
Journal	Applied catalysis A: general
Volume	338
Issue number	1-2
DOIs	https://doi.org/10.1016/j.apcata.2007.12.020
Publication status	Published - 2008

Keywords

METIS-250578
WGS
Sintering
Deactivation
Bifunctional
Catalysts
IR-79044
Titania
Platinum
Stability
SMSI

Access to Document

10.1016/j.apcata.2007.12.020

Cite this

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title = "Single stage water gas shift conversion over Pt/TiO2 - Problem of catalyst deactivation.",

abstract = "Pt/TiO2 is an active and selective catalyst for single stage water gas shift reaction. However, the catalyst deactivated with time on stream. Detailed studies of fresh, used, and reactivated Pt/TiO2 catalysts were carried out using kinetic (steady state and transient) and in situ IR spectroscopic methods in order to understand the mechanism of deactivation. The loss of Pt surface area was the cause of Pt/TiO2 deactivation, exclusively. Pt sintering occurred mainly due to the presence of traces of formaldehyde formed under WGS reaction conditions by reaction of H2 and CO. Details concerning the deactivation behavior are discussed.",

keywords = "METIS-250578, WGS, Sintering, Deactivation, Bifunctional, Catalysts, IR-79044, Titania, Platinum, Stability, SMSI",

author = "K.G.H. Azzam and Babych, {Igor V.} and Kulathuiyer Seshan and Leonardus Lefferts",

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journal = "Applied catalysis A: general",

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T1 - Single stage water gas shift conversion over Pt/TiO2 - Problem of catalyst deactivation.

AU - Azzam, K.G.H.

AU - Babych, Igor V.

AU - Seshan, Kulathuiyer

AU - Lefferts, Leonardus

PY - 2008

Y1 - 2008

N2 - Pt/TiO2 is an active and selective catalyst for single stage water gas shift reaction. However, the catalyst deactivated with time on stream. Detailed studies of fresh, used, and reactivated Pt/TiO2 catalysts were carried out using kinetic (steady state and transient) and in situ IR spectroscopic methods in order to understand the mechanism of deactivation. The loss of Pt surface area was the cause of Pt/TiO2 deactivation, exclusively. Pt sintering occurred mainly due to the presence of traces of formaldehyde formed under WGS reaction conditions by reaction of H2 and CO. Details concerning the deactivation behavior are discussed.

AB - Pt/TiO2 is an active and selective catalyst for single stage water gas shift reaction. However, the catalyst deactivated with time on stream. Detailed studies of fresh, used, and reactivated Pt/TiO2 catalysts were carried out using kinetic (steady state and transient) and in situ IR spectroscopic methods in order to understand the mechanism of deactivation. The loss of Pt surface area was the cause of Pt/TiO2 deactivation, exclusively. Pt sintering occurred mainly due to the presence of traces of formaldehyde formed under WGS reaction conditions by reaction of H2 and CO. Details concerning the deactivation behavior are discussed.

KW - METIS-250578

KW - WGS

KW - Sintering

KW - Deactivation

KW - Bifunctional

KW - Catalysts

KW - IR-79044

KW - Titania

KW - Platinum

KW - Stability

KW - SMSI

U2 - 10.1016/j.apcata.2007.12.020

DO - 10.1016/j.apcata.2007.12.020

M3 - Article

VL - 338

SP - 66

EP - 71

JO - Applied catalysis A: general

JF - Applied catalysis A: general

SN - 0926-860X

IS - 1-2

ER -