Gold/Ceria

Yi, Nan; Flytzani‐Stephanopoulos, Maria

doi:10.1016/b978-0-12-801217-8.00005-0

Cited by 2 publications

(1 citation statement)

References 115 publications

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“…Since the earliest reports from the groups of Flytzani-Stephanopoulos (Fu et al, 2001) and Andreeva (Andreeva et al, 2002) about excellent WGS activity of Au/CeO 2 at low temperatures, numerous studies have clarified how some specific features of ceria affect WGS performance of this kind of catalysts. These include nano-scaled particle size, surface area, surface structure, shape and crystal plane, and especially gold–ceria interface (Karpenko et al, 2007; Si and Flytzani-Stephanopoulos, 2008; Ta et al, 2012; Guan et al, 2015; Yi and Flytzani-Stephanopoulos, 2015; Centeno et al, 2016; Fu et al, 2019). Ceria became an attractive support for new-generation WGS catalysts owing to its ability to undergo a fast Ce 4+ ↔ Ce + transfer and to dissociate water on created oxygen vacancies.…”

Section: Recent Achievements In the Field Of Gold-catalyzed Wgs Reactionmentioning

confidence: 99%

Recent Advances in Design of Gold-Based Catalysts for H2 Clean-Up Reactions

Tabakova

2019

Front. Chem.

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Over the past three decades, supported gold nanoparticles have demonstrated outstanding properties and continue to attract the interest of the scientific community. Several books and comprehensive reviews as well as numerous papers cover a variety of fundamental and applied aspects specific to gold-based catalyst synthesis, characterization by different techniques, relationship among catalyst support features, electronic and structural properties of gold particles, and catalytic activity, reaction mechanism, and theoretical modeling. Among the Au-catalyzed reactions targeting environmental protection and sustainable energy applications, particular attention is paid to pure hydrogen production. The increasing demands for high-purity hydrogen for fuel cell systems caused a renewed interest in the water–gas shift reaction. This well-known industrial process provides an attractive way for hydrogen generation and additional increase of its concentration in the gas mixtures obtained by processes utilizing coal, petroleum, or biomass resources. An effective step for further elimination of CO traces from the reformate stream after water–gas shift unit is the preferential CO oxidation. Developing highly active, stable, and selective catalysts for these two reactions is of primary importance for efficient upgrading of hydrogen purity in fuel cell applications. This review aims to extend the existing knowledge and understanding of the properties of gold-based catalysts for H 2 clean-up reactions. In particular, new approaches and strategies for design of high-performing and cost-effective formulations are addressed. Emphasis is placed on efforts to explore appropriate and economically viable supports with complex composition prepared by various synthesis procedures. Relevance of ceria application as a support for new-generation WGS catalysts is pointed out. The role of the nature of support in catalyst behavior and specifically the existence of an active gold–support interface is highlighted. Long-term stability and tolerance toward start-up/shutdown cycling are discussed. Very recent advances in catalyst design are described focusing on structured catalysts and microchannel reactors. The latest mechanistic aspects of the water–gas shift reaction and preferential CO oxidation over gold-based catalysts from density functional theory calculations are noted because of their essential role in discovering novel highly efficient catalysts.

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Section: Recent Achievements In the Field Of Gold-catalyzed Wgs Reactionmentioning

confidence: 99%

Recent Advances in Design of Gold-Based Catalysts for H2 Clean-Up Reactions

Tabakova

2019

Front. Chem.

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A Selection of Recent Advances in C1 Chemistry

Mesters

2016

Annu. Rev. Chem. Biomol. Eng.

120

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This review presents a selection of recent publications related to the chemistry and catalysis of C1 molecules, including methane, methanol, carbon monoxide, and carbon dioxide. These molecules play an important role in the current supply of energy and chemicals and will likely become even more relevant because of the need to decarbonize fuels (shift from coal to natural gas) in line with CO2 capture and use to mitigate global warming, as well as a gradual shift on the supply side from crude oil to natural gas. This review includes both recent industrial developments, such as the huge increase in methanol-to-olefins-capacity build in China and the demonstration of oxidative coupling of methane, and scientific developments in these chemistries facilitated by improved capabilities in, for example, analytical tools and computational modeling.

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Gold/Ceria

Cited by 2 publications

References 115 publications

Recent Advances in Design of Gold-Based Catalysts for H2 Clean-Up Reactions

Recent Advances in Design of Gold-Based Catalysts for H2 Clean-Up Reactions

A Selection of Recent Advances in C1 Chemistry

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