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Article
A US perspective on closing the carbon cycle to defossilize difficult-to-electrify segments of our economy
Electrification to reduce or eliminate greenhouse gas emissions is essential to mitigate climate change. However, a substantial portion of our manufacturing and transportation infrastructure will be difficult ...
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Article
Open AccessMemory-dictated dynamics of single-atom Pt on CeO2 for CO oxidation
Single atoms of platinum group metals on CeO2 represent a potential approach to lower precious metal requirements for automobile exhaust treatment catalysts. Here we show the dynamic evolution of two types of sin...
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Article
Elemental zoning enhances mass transport in zeolite catalysts for methanol to hydrocarbons
Mass transport limitations in zeolite catalysts pose major hurdles for their optimal performance in diverse chemical reactions. Most approaches to reduce these restrictions focus on the synthesis of either hie...
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Article
Templated encapsulation of platinum-based catalysts promotes high-temperature stability to 1,100 °C
Stable catalysts are essential to address energy and environmental challenges, especially for applications in harsh environments (for example, high temperature, oxidizing atmosphere and steam). In such conditi...
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Article
Open AccessDirecting reaction pathways via in situ control of active site geometries in PdAu single-atom alloy catalysts
The atomic scale structure of the active sites in heterogeneous catalysts is central to their reactivity and selectivity. Therefore, understanding active site stability and evolution under different reaction c...
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Article
Open AccessOperando high-pressure investigation of size-controlled CuZn catalysts for the methanol synthesis reaction
Although Cu/ZnO-based catalysts have been long used for the hydrogenation of CO2 to methanol, open questions still remain regarding the role and the dynamic nature of the active sites formed at the metal-oxide in...
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Article
Transition state and product diffusion control by polymer–nanocrystal hybrid catalysts
Effective catalysts stabilize specific transition states and control the transport of species to and from catalytically active sites. Enzymes show these traits thanks to their diverse amino acid functional gro...
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Article
Catalyst deactivation via decomposition into single atoms and the role of metal loading
In the high-temperature environments needed to perform catalytic processes, supported precious metal catalysts lose their activity severely over time. Generally, loss of catalytic activity is attributed to nan...
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Article
Structural evolution of atomically dispersed Pt catalysts dictates reactivity
The use of oxide-supported isolated Pt-group metal atoms as catalytic active sites is of interest due to their unique reactivity and efficient metal utilization. However, relationships between the structure of...
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Article
Identification of the active complex for CO oxidation over single-atom Ir-on-MgAl2O4 catalysts
Supported single atoms provide an opportunity to design new heterogeneous catalysts while optimizing the utilization of noble metals. However, identification of the active single-atom structure is required for...
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Article
Open AccessDetermining the location and nearest neighbours of aluminium in zeolites with atom probe tomography
Zeolite catalysis is determined by a combination of pore architecture and Brønsted acidity. As Brønsted acid sites are formed by the substitution of AlO4 for SiO4 tetrahedra, it is of utmost importance to have in...
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Article
Morphology-dependent zeolite intergrowth structures leading to distinct internal and outer-surface molecular diffusion barriers
Zeolites play a crucial part in acid–base heterogeneous catalysis. Fundamental insight into their internal architecture is of great importance for understanding their structure–function relationships. Here, we...
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Chapter
Surface Chemistry
This paper reviews classical and modern surface chemistry and discusses the concepts and principles that are unique to two dimensional surfaces. The structure, the composition and the dynamics of atoms and mol...
