Low-Temperature Water–Gas Shift Reaction over Au/α-Fe2O3

Andreeva, D.; Idakiev, V.; Tabakova, T.; Andreev, A.

doi:10.1006/jcat.1996.0035

Cited by 227 publications

(124 citation statements)

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“…Studies on gold supported catalysts have been mainly focused on gas-phase oxidation, such as CO oxidation [1][2][3][4], complete oxidation of hydrocarbons [5][6][7][8][9][10][11], selective oxidation [12][13][14][15][16][17][18][19][20], and water-gas shift (WGS) reaction [21][22][23][24]. Studies on the use of gold catalysts for the synthesis of fine chemicals in liquid phase have recently received much more attention.…”

Section: Introductionmentioning

confidence: 99%

Gold on titania: Effect of preparation method in the liquid phase oxidation

Dimitratos

Villa

Bianchi

et al. 2006

Applied Catalysis A: General

129

106

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The effect of preparation method (deposition-precipitation versus sol immobilisation method) and reduction method (calcination versus chemical reduction) on Au/TiO 2 catalysts for the liquid phase oxidation of glycerol has been studied. It was revealed that a different trend existed in terms of activity and distribution of products. The catalytic activity is shown to be dependent not only on the choice of the reduction method but also on the use of protective agent (PVA, THPC) for the stabilization of the gold colloids. In fact, the highest activity was found when a low temperature chemical reduction was employed on a Au/TiO 2 sample synthesised by the deposition-precipitation method. The use of a higher pre-treatment temperature or of a protective agent resulted in a lower activity but could be used to direct selectivity in oxidation reactions. The structural data (HRTEM and XPS) along with the catalytic results indicate that the combination of metallic Au 0 species with small particle size (2-5 nm) are responsible for the high activity observed in the liquid phase oxidation of glycerol. #

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Section: Introductionmentioning

confidence: 99%

Gold on titania: Effect of preparation method in the liquid phase oxidation

Dimitratos

Villa

Bianchi

et al. 2006

Applied Catalysis A: General

129

106

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“…In the initial publications on WGSR over supported gold catalysts, the focus was more on catalytic activity than on stability. [41][42][43][44] In recent years, more and more attention has been paid to the stability of gold catalysts in WGSR and their deactivation mechanisms. Osuwan and co-workers compared the catalytic performance of Pt/CeO 2 , Au/CeO 2 , and Au/Fe 2 O 3 in WGSR.…”

Section: Catalyst Stability and Deactivationmentioning

confidence: 99%

“…Here we reviewed the recent advances in fundamental studies of WGSR catalysis on supported gold catalysts. 41 Au/a-Fe 2 O 3 prepared using a modified depositionprecipitation method had higher activity. 43 Additional studies have followed.…”

Section: Introductionmentioning

confidence: 96%

Water–gas shift on gold catalysts: catalyst systems and fundamental studies

Tao¹,

Ma²

2013

Phys. Chem. Chem. Phys.

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Since the pioneering finding by Haruta et al. that small gold nanoparticles on reducible supports can be highly active for low-temperature CO oxidation, the synthesis, characterization, and application of supported gold catalysts have attracted much attention. The water-gas shift reaction (WGSR: CO + H 2 O = CO 2 + H 2 ) is important for removing CO and upgrading the purity of H 2 for fuel cell applications, ammonia synthesis, and selective hydrogenation processes. In recent years, much attention has been paid to exploration the possibility of using supported gold nanocatalysts for WGSR and understanding the fundamental aspects related to catalyst deactivation mechanisms, nature of active sites, and reaction mechanisms. Here we summarize recent advances in the development of supported gold catalysts for this reaction and fundamental insights that can be gained, and furnish our assessment on the status of research progress.

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“…[53] High catalytic activity for the WGS reaction using Aubased catalysts operating at LT was reported for the first time using nano-sized Au/Fe 2 O 3 . [54,55] In 1997, Sakuray et al . [56] reported the use of the Au/TiO 2 catalyst for both forward and reverse WGS reactions presenting high activities, comparable to the conventional commercial catalyst CuO/ZnO/Al 2 O 3 .…”

Section: Co-based Catalystsmentioning

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

201

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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Low-Temperature Water–Gas Shift Reaction over Au/α-Fe2O3

Cited by 227 publications

References 0 publications

Gold on titania: Effect of preparation method in the liquid phase oxidation

Gold on titania: Effect of preparation method in the liquid phase oxidation

Water–gas shift on gold catalysts: catalyst systems and fundamental studies

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

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