Effect of Re addition on the WGS activity and stability of Pt/CeO2-TiO2 catalyst for membrane reactor applications

V. del Villar; L. Barrio; Arash Helmi Siasi Farimani; M. Van Sint Annaland; F. Gallucci; J.L.G. Fierro; R.M. Navarro

doi:10.1016/j.cattod.2015.11.013

Effect of Re addition on the WGS activity and stability of Pt/CeO₂-TiO₂ catalyst for membrane reactor applications

V. del Villar, L. Barrio, Arash Helmi Siasi Farimani, M. Van Sint Annaland, F. Gallucci, J.L.G. Fierro, R.M. Navarro

Chemical Process Intensification

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Abstract

The catalytic performance of RePt/CeO₂-TiO₂ catalysts for the WGS reaction under conditions compatible with membrane reactor was investigated. The WGS activity and stability of the Pt/CeO₂-TiO₂ catalyst was significantly influenced by the addition of rhenium. The intrinsic WGS activity per atom of platinum improves with the addition of Re to Pt/CeO₂-TiO₂ catalyst. The addition of rhenium also has a beneficial effect on its stability under WGS conditions compatible with membrane reactor use. The improvement in WGS activity and stability is proposed to be associated with the improvement in the reduction behavior of the highly dispersed CeO₂ and ReO_x species present in the bimetallic RePt catalyst respect to the monometallic Pt/CeTi counterpart and to the presence of rhenium species in close contact with Pt that could introduce an additional redox activity sites stable under WGS conditions and/or prevent the sintering of Pt crystallites under WGS conditions.

Original language	English
Pages (from-to)	95-102
Journal	Catalysis Today
Volume	268
DOIs	https://doi.org/10.1016/j.cattod.2015.11.013
Publication status	Published - 15 Jun 2016
Event	12th International Conference on Catalysis in Membrane Reactors (ICCMR12) - Szczecin, Poland Duration: 22 Jun 2015 → 25 Jun 2015 Conference number: 12 http://www.iccmr12.zut.edu.pl/

Keywords

Ceria
Fluidization
Membrane reactor
Platinum
Rhenium
Titania
WGS

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10.1016/j.cattod.2015.11.013

VillarEffect2016Final published version, 1.33 MBLicence: TAVERNE

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title = "Effect of Re addition on the WGS activity and stability of Pt/CeO2-TiO2 catalyst for membrane reactor applications",

abstract = "The catalytic performance of RePt/CeO2-TiO2 catalysts for the WGS reaction under conditions compatible with membrane reactor was investigated. The WGS activity and stability of the Pt/CeO2-TiO2 catalyst was significantly influenced by the addition of rhenium. The intrinsic WGS activity per atom of platinum improves with the addition of Re to Pt/CeO2-TiO2 catalyst. The addition of rhenium also has a beneficial effect on its stability under WGS conditions compatible with membrane reactor use. The improvement in WGS activity and stability is proposed to be associated with the improvement in the reduction behavior of the highly dispersed CeO2 and ReO x species present in the bimetallic RePt catalyst respect to the monometallic Pt/CeTi counterpart and to the presence of rhenium species in close contact with Pt that could introduce an additional redox activity sites stable under WGS conditions and/or prevent the sintering of Pt crystallites under WGS conditions.",

keywords = "Ceria, Fluidization, Membrane reactor, Platinum, Rhenium, Titania, WGS",

author = "{del Villar}, V. and L. Barrio and {Helmi Siasi Farimani}, Arash and Annaland, {M. Van Sint} and F. Gallucci and J.L.G. Fierro and R.M. Navarro",

year = "2016",

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doi = "10.1016/j.cattod.2015.11.013",

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T1 - Effect of Re addition on the WGS activity and stability of Pt/CeO2-TiO2 catalyst for membrane reactor applications

AU - del Villar, V.

AU - Barrio, L.

AU - Helmi Siasi Farimani, Arash

AU - Annaland, M. Van Sint

AU - Gallucci, F.

AU - Fierro, J.L.G.

AU - Navarro, R.M.

N1 - Conference code: 12

PY - 2016/6/15

Y1 - 2016/6/15

N2 - The catalytic performance of RePt/CeO2-TiO2 catalysts for the WGS reaction under conditions compatible with membrane reactor was investigated. The WGS activity and stability of the Pt/CeO2-TiO2 catalyst was significantly influenced by the addition of rhenium. The intrinsic WGS activity per atom of platinum improves with the addition of Re to Pt/CeO2-TiO2 catalyst. The addition of rhenium also has a beneficial effect on its stability under WGS conditions compatible with membrane reactor use. The improvement in WGS activity and stability is proposed to be associated with the improvement in the reduction behavior of the highly dispersed CeO2 and ReO x species present in the bimetallic RePt catalyst respect to the monometallic Pt/CeTi counterpart and to the presence of rhenium species in close contact with Pt that could introduce an additional redox activity sites stable under WGS conditions and/or prevent the sintering of Pt crystallites under WGS conditions.

AB - The catalytic performance of RePt/CeO2-TiO2 catalysts for the WGS reaction under conditions compatible with membrane reactor was investigated. The WGS activity and stability of the Pt/CeO2-TiO2 catalyst was significantly influenced by the addition of rhenium. The intrinsic WGS activity per atom of platinum improves with the addition of Re to Pt/CeO2-TiO2 catalyst. The addition of rhenium also has a beneficial effect on its stability under WGS conditions compatible with membrane reactor use. The improvement in WGS activity and stability is proposed to be associated with the improvement in the reduction behavior of the highly dispersed CeO2 and ReO x species present in the bimetallic RePt catalyst respect to the monometallic Pt/CeTi counterpart and to the presence of rhenium species in close contact with Pt that could introduce an additional redox activity sites stable under WGS conditions and/or prevent the sintering of Pt crystallites under WGS conditions.

KW - Ceria

KW - Fluidization

KW - Membrane reactor

KW - Platinum

KW - Rhenium

KW - Titania

KW - WGS

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SP - 95

EP - 102

JO - Catalysis Today

JF - Catalysis Today

SN - 0920-5861

T2 - 12th International Conference on Catalysis in Membrane Reactors (ICCMR12)

Y2 - 22 June 2015 through 25 June 2015

ER -

Effect of Re addition on the WGS activity and stability of Pt/CeO₂-TiO₂ catalyst for membrane reactor applications

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Keywords

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