HASTE: Multistrålptykografi med hög kapacitet som stöd för katalysforskning

Ptychography is a coherent non-destructive X-ray imaging technique that allows the study of nature in 3D at the nanoscale, bridging the capabilities of optical and electron microscopy.

As a coherent method, it can only use the coherent fraction of photons provided by an X-ray source, while discarding the incoherent ones.To make use of these currently discarded incoherent photons, we will develop multibeam ptychography (MBP) as a user technique.

MBP will enable faster scans (higher temporal resolution),  the study of larger samples, and higher sample throughput in a given experiment. In fact, MBP can speed up the scan time by a factor of 100x at PETRA III (Germany) and 10x at MAX IV (Sweden).

At PETRA IV, a factor 10x enhancement is foreseeable when imaging at high photon energies.While MBP has numerous potential applications, here we will exploit the unprecedented temporal resolution and scanning capabilities of MBP to study catalytic materials on scales that are not currently feasible.

Catalysis is a crucial technology underpinning sustainable chemical and energy industries.

MBP can help to reveal how and why catalysts deactivate, how to restore their activity, and therefore inspire technologies to increase their lifespan and efficiency.

Here we will focus on deactivation and regeneration processes including reversibility of coking and poisoning on metal-exchanged zeolites, which are widely used catalysts for selective oxidation and pollution mitigation processes.