Investigation of the effect of the preparation method on the activity and stability of Au/CeZrO4 catalysts for the low temperature water gas shift reaction

Pilasombat, R.; Daly, Helen; Goguet, Alexandre; Breen, John; Burch, Robbie; Hardacre, Christopher; Thompsett, David

doi:10.1016/j.cattod.2011.04.053

Cited by 31 publications

(21 citation statements)

References 60 publications

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“…3). 70 The activities in WGSR followed the sequence of Au/CeO 2 nanorods > Au/CeO 2 polyhedra c Au/ CeO 2 nanocubes, probably because of the presence of a much higher fraction of strongly bound gold species on the former two catalysts, as confirmed by others. 81 In addition, a theoretical study indicated that oxygen vacancies are easier to form on CeO 2 {110} than {100} and {111} planes, 82 thus explaining the stabilization of gold species on CeO 2 nanorods.…”

Section: Development Of New Wgs Catalystssupporting

confidence: 54%

“…For instance, Hardacre and co-workers investigated the influence of gold deposition methods, type of the gold precursor, nature of the washing solution, drying methods, as well as the Ce/Zr ratio and sulfation of the CeZrO 4 support on catalytic performance. 70 It was nicely shown that the catalytic activities of Au/CeZrO 4 catalysts prepared differently correlated to the Au-CO band areas detected by FT-IR (Fig. 2).…”

Section: Development Of New Wgs Catalystsmentioning

confidence: 70%

“…2). 70 In that work, CO was used as a probe for infrared characterization and the Au-CO band area correlated to the number of surface gold sites.…”

Section: Development Of New Wgs Catalystsmentioning

confidence: 99%

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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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Section: Development Of New Wgs Catalystssupporting

confidence: 54%

Section: Development Of New Wgs Catalystsmentioning

confidence: 70%

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

Tao¹,

Ma²

2013

Phys. Chem. Chem. Phys.

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“…Numerous studies have shown that nanometer-sized gold particles supported on ceria and/or zirconia are an important catalyst for the low-temperature water-gas shift reaction [50][51][52][53][54][55][56]. But generally these studies are performed with high quantity of water (10-30%) and temperatures comprised between 150 and 350°C.…”

Section: Possibility Of a Water Gas Shift Reactionmentioning

confidence: 98%

Influence of the partner oxide on the catalytic properties of Au/Ce x Zr 1 − x highly loaded gold catalysts

Morfin

Ait-Chaou

Lomello

et al. 2015

Journal of Catalysis

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“…13 It has been reported that catalysts supported on mixed metal oxides can be more active *Corresponding author, email kmorgan08@qub.ac.uk **Corresponding author, email c.hardacre@qub.ac.uk than those supported on individual pure metal oxides. 13,14 Some of the reactions for which gold catalysts supported on mixed metal oxides have been found to be particularly active include CO oxidation, 14,15 water gas shift (WGS) 16,17 and preferential oxidation of CO (PROX). 18,19 The catalytic oxidation of carbon monoxide is an important reaction in applications including cold start exhaust emission control for automobiles, respirators and clean hydrogen production.…”

Section: Introductionmentioning

confidence: 99%