A surface science investigation of the water-gas shift reaction on Cu(111)

Campbell, Charles T.; Daube, Karen A.

doi:10.1016/0021-9517(87)90341-1

Cited by 204 publications

(99 citation statements)

References 36 publications

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“…For Cu-based catalysts, reoxidation occurs [16] but at a lower rate than observed, clearly supporting that redox is not the predominant mechanism over such materials. [96] Grenoble et al . [95] proposed a bifunctional associative mechanism to describe the WGS reaction pathways over Cu/Al 2 O 3 catalysts.…”

Section: Mechanisms and Kineticsmentioning

confidence: 99%

The water‐gas shift reaction: from conventional catalytic systems to Pd‐based membrane reactors—a review

Mendes

Madeira

et al. 2009

Asia-Pacific J Chem Eng

204

109

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The water-gas shift (WGS) reaction is a well-known step for upgrading carbon monoxide to hydrogen in the production of synthesis gas. For more than 90 years after its first industrial application, many issues in respect of the catalyst, process configuration, reactor design, reaction mechanisms and kinetics have been investigated. More recently, a renewed interest in the WGS reaction carried out in hydrogen perm-selective membrane reactors (MRs) has been observed because of the growing use of polymeric electrolyte membrane (PEM) fuel cells that operate using high-purity hydrogen. Moreover, MRs are viewed as an interesting technology in order to overcome the equilibrium conversion limitations in traditional reactors.This article reviews the most relevant topics of WGS MR technology -catalysis and membrane science. The most used catalysts and relevant progress achieved so far are described and critically reviewed. The effects of the most important parameters affecting the WGS in MRs are detailed. In addition, an overview on the most used membranes in MRs is also presented and discussed. 

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Section: Mechanisms and Kineticsmentioning

confidence: 99%

The water‐gas shift reaction: from conventional catalytic systems to Pd‐based membrane reactors—a review

Mendes

Madeira

et al. 2009

Asia-Pacific J Chem Eng

204

109

View full text Add to dashboard Cite

show abstract

“…48,62,63,64 The sample could be transferred between the reactor and vacuum chamber without exposure to air. Small coverages of gold (0-0.2 monolayer) were vapor-deposited on the CeO 2 (111) surface at the CeO 2 (111) substrate which have sizes in the range of 0.5-3 nm.…”

Section: B Wgs Reaction On Au-ceria Nanocatalystsmentioning

confidence: 99%

H ₂ Production and Fuel Cells

Wang

Rodríguez

2006

Synthesis, Properties, and Applications of Oxide Nanomaterials

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“…[1][2][3][4][5][6] The catalysts suffer from the problems of pyrophoricity and require special methods for preparation and handling. 7 With the requirement of high purity hydrogen for fuel cell applications, newer and novel catalysts are required for catalyzing WGS.…”

Section: Introductionmentioning

confidence: 99%

Support‐dependent activity of noble metal substituted oxide catalysts for the water gas shift reaction

Deshpande

Madras

2010

AIChE Journal

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The water gas shift reaction was carried out over noble metal ion substituted nanocrystalline oxide catalysts with different supports. Spectroscopic studies of the catalysts before and after the reaction showed different surface phenomena occurring over the catalysts. Reaction mechanisms were proposed based upon the surface processes and intermediates formed. The dual site mechanism utilizing the oxide ion vacancies for water dissociation and metal ions for CO adsorption was proposed to describe the kinetics of the reaction over the reducible oxides like CeO 2 . A mechanism based on the interaction of adsorbed CO and the hydroxyl group was proposed for the reaction over ZrO 2 . A hybrid mechanism based on oxide ion vacancies and surface hydroxyl groups was proposed for the reaction over TiO 2 . The deactivation of the catalysts was also found to be support dependent. Kinetic models for both activation and deactivation were proposed.

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A surface science investigation of the water-gas shift reaction on Cu(111)

Cited by 204 publications

References 36 publications

The water‐gas shift reaction: from conventional catalytic systems to Pd‐based membrane reactors—a review

The water‐gas shift reaction: from conventional catalytic systems to Pd‐based membrane reactors—a review

H ₂ Production and Fuel Cells

Support‐dependent activity of noble metal substituted oxide catalysts for the water gas shift reaction

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A surface science investigation of the water-gas shift reaction on Cu(111)

Cited by 204 publications

References 36 publications

The water‐gas shift reaction: from conventional catalytic systems to Pd‐based membrane reactors—a review

The water‐gas shift reaction: from conventional catalytic systems to Pd‐based membrane reactors—a review

H 2 Production and Fuel Cells

Support‐dependent activity of noble metal substituted oxide catalysts for the water gas shift reaction

Contact Info

Product

Resources

About

H ₂ Production and Fuel Cells