Catalyst Screening and Kinetic Modeling for CO Production by High Pressure and Temperature Reverse Water Gas Shift for Fischer-Tropsch Applications

Francisco Vidal Vázquez (Corresponding Author), Peter Pfeifer, Juha Lehtonen, Paolo Piermartini, Pekka Simell, Ville Alopaeus

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

Abstract

In this work, catalyst screening and reaction kinetic modeling are performed for two Ni-based and one Rh-based commercial catalysts for a reverse water gas shift (rWGS) reaction under atmospheric and 30 bar a pressure. Ni-based catalysts displayed higher activity compared to Rh-based catalysts despite the severe initial deactivation Ni-based catalysts suffered, which increases catalyst selectivity toward CO formation. Ni/Al 2O 3 catalyst with lower Ni content (2 w-%) exhibited higher selectivity toward CO formation compared to the Ni/Al 2O 3 catalyst with higher Ni content (15 wt %). The Ni/Al 2O 3 (2 wt % of Ni) catalyst was further tested for kinetic modeling. Three kinetic models were developed based on reaction mechanisms and kinetic models obtained from other publications for rWGS/WGS, methanation, and methane steam reforming reactions based on different mechanistic approaches. The model based on mechanistic assumptions originally proposed by Xu and Froment was concluded to be the most suitable to describe the high temperature reaction system of the rWGS and methanation over supported nickel catalyst. On the basis of statistical analysis, the model proposed by Xu and Froment was also concluded to be the best for the catalyst and reaction system studied in this work.

Original languageEnglish
Pages (from-to)13262–13272
Number of pages11
JournalIndustrial & Engineering Chemistry Research: Tapio Salmi Festschrift
Volume56
Issue number45
Early online date2017
DOIs
Publication statusPublished - 3 Jul 2017
MoE publication typeA1 Journal article-refereed

Fingerprint

Water gas shift
Carbon Monoxide
Screening
Catalysts
Kinetics
Temperature
Methanation
Catalyst selectivity
Reforming reactions
Nickel
Reaction kinetics
Catalyst activity
Statistical methods
Methane
Steam

Cite this

@article{13754eda65f44c0f899b14696885ebd6,
title = "Catalyst Screening and Kinetic Modeling for CO Production by High Pressure and Temperature Reverse Water Gas Shift for Fischer-Tropsch Applications",
abstract = "In this work, catalyst screening and reaction kinetic modeling are performed for two Ni-based and one Rh-based commercial catalysts for a reverse water gas shift (rWGS) reaction under atmospheric and 30 bar a pressure. Ni-based catalysts displayed higher activity compared to Rh-based catalysts despite the severe initial deactivation Ni-based catalysts suffered, which increases catalyst selectivity toward CO formation. Ni/Al 2O 3 catalyst with lower Ni content (2 w-{\%}) exhibited higher selectivity toward CO formation compared to the Ni/Al 2O 3 catalyst with higher Ni content (15 wt {\%}). The Ni/Al 2O 3 (2 wt {\%} of Ni) catalyst was further tested for kinetic modeling. Three kinetic models were developed based on reaction mechanisms and kinetic models obtained from other publications for rWGS/WGS, methanation, and methane steam reforming reactions based on different mechanistic approaches. The model based on mechanistic assumptions originally proposed by Xu and Froment was concluded to be the most suitable to describe the high temperature reaction system of the rWGS and methanation over supported nickel catalyst. On the basis of statistical analysis, the model proposed by Xu and Froment was also concluded to be the best for the catalyst and reaction system studied in this work.",
author = "{Vidal V{\'a}zquez}, Francisco and Peter Pfeifer and Juha Lehtonen and Paolo Piermartini and Pekka Simell and Ville Alopaeus",
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Catalyst Screening and Kinetic Modeling for CO Production by High Pressure and Temperature Reverse Water Gas Shift for Fischer-Tropsch Applications. / Vidal Vázquez, Francisco (Corresponding Author); Pfeifer, Peter; Lehtonen, Juha; Piermartini, Paolo; Simell, Pekka; Alopaeus, Ville.

In: Industrial & Engineering Chemistry Research: Tapio Salmi Festschrift, Vol. 56, No. 45, 03.07.2017, p. 13262–13272.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - Catalyst Screening and Kinetic Modeling for CO Production by High Pressure and Temperature Reverse Water Gas Shift for Fischer-Tropsch Applications

AU - Vidal Vázquez, Francisco

AU - Pfeifer, Peter

AU - Lehtonen, Juha

AU - Piermartini, Paolo

AU - Simell, Pekka

AU - Alopaeus, Ville

N1 - Project code: 101283

PY - 2017/7/3

Y1 - 2017/7/3

N2 - In this work, catalyst screening and reaction kinetic modeling are performed for two Ni-based and one Rh-based commercial catalysts for a reverse water gas shift (rWGS) reaction under atmospheric and 30 bar a pressure. Ni-based catalysts displayed higher activity compared to Rh-based catalysts despite the severe initial deactivation Ni-based catalysts suffered, which increases catalyst selectivity toward CO formation. Ni/Al 2O 3 catalyst with lower Ni content (2 w-%) exhibited higher selectivity toward CO formation compared to the Ni/Al 2O 3 catalyst with higher Ni content (15 wt %). The Ni/Al 2O 3 (2 wt % of Ni) catalyst was further tested for kinetic modeling. Three kinetic models were developed based on reaction mechanisms and kinetic models obtained from other publications for rWGS/WGS, methanation, and methane steam reforming reactions based on different mechanistic approaches. The model based on mechanistic assumptions originally proposed by Xu and Froment was concluded to be the most suitable to describe the high temperature reaction system of the rWGS and methanation over supported nickel catalyst. On the basis of statistical analysis, the model proposed by Xu and Froment was also concluded to be the best for the catalyst and reaction system studied in this work.

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