Ultrafast radiographic imaging and tracking: An overview of instruments, methods, data, and applications

Z Wang, AFT Leong, A Dragone, AE Gleason… - Nuclear Instruments and …, 2023 - Elsevier
Ultrafast radiographic imaging and tracking (U-RadIT) use state-of-the-art ionizing particle
and light sources to experimentally study sub-nanosecond transients or dynamic processes …

Challenges and opportunities to enhance flexibility in design and operation of chemical processes

J Riese, M Grünewald - Chemie Ingenieur Technik, 2020 - Wiley Online Library
Flexibility receives increased interest in chemical engineering and is discussed as one
measure to deal with upcoming challenges for the chemical industry. In this paper, different …

Chemical gradients in automotive Cu-SSZ-13 catalysts for NOx removal revealed by operando X-ray spectrotomography

J Becher, DF Sanchez, DE Doronkin, D Zengel… - Nature Catalysis, 2021 - nature.com
Nitrogen oxide (NO x) emissions are a major source of pollution, demanding ever-improving
performance from catalytic after-treatment systems. However, catalyst development is often …

Evolution of Hierarchically Porous Nickel Alumina Catalysts Studied by X‐Ray Ptychography

S Weber, A Diaz, M Holler, A Schropp… - Advanced …, 2022 - Wiley Online Library
The synthesis of hierarchically porous materials usually requires complex experimental
procedures, often based around extensive trial and error approaches. One common …

Digitization in Catalysis Research: Towards a Holistic Description of a Ni/Al2O3 Reference Catalyst for CO2 Methanation

S Weber, RT Zimmermann, J Bremer, KL Abel… - …, 2022 - Wiley Online Library
There is considerable motivation in the catalysis community and chemical industry to
envision a future where rational catalyst design and targeted chemical process optimization …

Porosity and Structure of Hierarchically Porous Ni/Al2O3 Catalysts for CO2 Methanation

S Weber, KL Abel, RT Zimmermann, X Huang… - Catalysts, 2020 - mdpi.com
CO2 methanation is often performed on Ni/Al2O3 catalysts, which can suffer from mass
transport limitations and, therefore, decreased efficiency. Here we show the application of a …

Multi-slice ptychography enables high-resolution measurements in extended chemical reactors

M Kahnt, L Grote, D Brückner, M Seyrich, F Wittwer… - Scientific reports, 2021 - nature.com
Ptychographic X-ray microscopy is an ideal tool to observe chemical processes under in situ
conditions. Chemical reactors, however, are often thicker than the depth of field, limiting the …

New Dimensions in Catalysis Research with Hard X‐Ray Tomography

S Das, R Pashminehazar, S Sharma… - Chemie Ingenieur …, 2022 - Wiley Online Library
The structure and function of solid catalysts are inseparably linked at length scales from nm
to cm and beyond. Hard X‐ray tomography offers unique potential for spatially‐resolved …

Olefin Ring‐closing Metathesis under Spatial Confinement: Morphology− Transport Relationships

U Tallarek, J Hochstrasser, F Ziegler, X Huang… - …, 2021 - Wiley Online Library
Spatial confinement effects on hindered transport in mesoporous silica particles are
quantified using reconstructions of their morphology obtained by electron tomography as …

Upscaling of multi-beam x-ray ptychography for efficient x-ray microscopy with high resolution and large field of view

F Wittwer, M Lyubomirskiy, F Koch, M Kahnt… - Applied Physics …, 2021 - pubs.aip.org
Nondestructive imaging with both a large field of view and a high spatial resolution is crucial
to understand complex materials and processes in science and technology. X-ray …