A Linear Scaling Relation for CO Oxidation on CeO<sub>2</sub>-Supported Pd

Liu, Jin Xun; Su, Yaqiong; Filot, Ivo A. W.; Hensen, Emiel J. M.

doi:10.1021/jacs.7b13624

Cited by 137 publications

(115 citation statements)

References 78 publications

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“…Unlike the inert supports, active supports have facile redox properties. Therefore, the high reducibility of the active supports, such as CeO 2 , Fe 2 O 3 , TiO 2 , contributes to the supply of reactive oxygen, indicating the improved oxidation reaction …”

Section: Strategy To Improve Co Oxidation By Controlling the Interactmentioning

confidence: 99%

“…It has been identified in the previous sections that the interfacial effect affects the activity through improving the reduction of CeO 2 support. Therefore, we know that improving the reducibility of support is important for the activity, and thus it should be a strategy to improve the activity in the loading system . In this sense, we would like to focus on the methods to basically tune the reducibility of the support, aside from the presence of metal particle on the surface.…”

Section: Strategy To Improve Co Oxidation By Controlling the Interactmentioning

confidence: 99%

“…Therefore, the high reducibility of the active supports, such as CeO 2 , Fe 2 O 3 , TiO 2 , contributes to the supply of reactive oxygen, indicating the improved oxidation reaction. [98][99] When metal is loaded on the CeO 2 , one of active supports, it exhibits interfacial effects on the activity via strong metal support interaction (SMSI). [101] Tauster et al observed a significant change in the chemisorption properties of precious metals loaded on TiO 2 , and they first named this phenomenon as SMSI.…”

Section: Strong Metal Support Interaction (Smsi) Of Metal-loaded Ceomentioning

confidence: 99%

“…Therefore, we know that improving the reducibility of support is important for the activity, and thus it should be a strategy to improve the activity in the loading system. [32,99,105,108,[120][121][122] In this sense, we would like to focus on the methods to basically tune the reducibility of the support, aside from the presence of metal particle on the surface. There are two popular ways to control the reducibility of the CeO 2 .…”

Section: Tuning Support Reduction Properties That Affect Activitymentioning

confidence: 99%

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Design of Ceria Catalysts for Low‐Temperature CO Oxidation

et al. 2019

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A catalyst active to carbon monoxide (CO) oxidation at low temperature is essential for environmental conservation, saving fuel and improvement of the quality of human life. Rational design of CO oxidation catalyst on the basis of comprehensive understanding of physicochemical properties of catalytic materials, rather than simply searching for the catalyst based on trial‐and‐error, is a promising approach to meet the increasingly stringent regulations. This review covers metal‐doped and ‐loaded system based on CeO2 catalysts as strategies to significantly improve CO oxidation activity at low temperature. When incorporated into CeO2 lattice, active metals significantly lower the oxygen vacancy formation energy (Evf) of the catalyst surface, resulting in high catalytic activities at low temperature. When the active metals are loaded on the CeO2 surface, many active sites could be acquired by increasing the dispersion, and the catalytic activity can be dramatically improved by newly introducing the interfacial sites between the metals and the CeO2 support. Doping the support could further improve this loaded system in terms of specific surface area, oxygen vacancy formation, and spillover effects. In this review, based on this knowledge, we propose a rational design approach to a robust low‐temperature CO oxidation catalysts. The desirable CO oxidation catalysts identified from the interplay between theoretical and experimental approaches would ultimately improve the quality of human life, and create potential economic benefits by alleviating air pollution.

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Section: Strategy To Improve Co Oxidation By Controlling the Interactmentioning

confidence: 99%

Section: Strategy To Improve Co Oxidation By Controlling the Interactmentioning

confidence: 99%

Section: Strong Metal Support Interaction (Smsi) Of Metal-loaded Ceomentioning

confidence: 99%

Section: Tuning Support Reduction Properties That Affect Activitymentioning

confidence: 99%

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Design of Ceria Catalysts for Low‐Temperature CO Oxidation

et al. 2019

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“…The chocie of U value has a negligible influence on the thermodynamic or kinetic energy property of CeO 2 system . And U =4.5 eV is extnsively used in the simulation of CeO 2 system ,. For the calculations of Cu 1 /CeO 2 (111), we used a periodic slab with a (4×4) supercell in which one of the surface Ce atoms was substituted by one TM atom.…”

Section: Figurementioning

confidence: 99%

Highly stable and Active Cu₁/CeO₂ Single‐Atom Catalyst for CO Oxidation: A DFT Study

et al. 2018

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We carried out density functional theory simulations to examine the stability and CO oxidation activity of single Cu atoms supported on CeO2(111). Both the strong binding energy and high activation energy for Cu single atom diffusion indicate a high stability of the Cu1/CeO2 single‐atom catalyst. Electronic structure analysis verifies the formation of Cu+ cation due to electron transfer. The frequency analysis further corroborates that the experimentally observed IR bands around 2114–2130 cm−1 of CO adsorption at the boundary of Cu/CeO2 correspond to Cu+‐carbonyl species. Cu1/CeO2 single‐atom catalyst displays a promising catalytic activity for CO oxidation via Mars van Krevelen mechanism.

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